{"id":17037,"date":"2025-06-23T17:53:05","date_gmt":"2025-06-23T15:53:05","guid":{"rendered":"https:\/\/arca-valve.com\/?post_type=produkte&#038;p=17037"},"modified":"2026-05-17T13:59:51","modified_gmt":"2026-05-17T11:59:51","slug":"ecotrol-rotary-control-valve","status":"publish","type":"produkte","link":"https:\/\/arca-valve.com\/en\/produkte\/control-valves\/ecotrol-rotary-control-valve\/","title":{"rendered":"ECOTROL\u00ae Rotary Control Valve"},"content":{"rendered":"  \n\n                \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\" c-widget--has-space-top-small c-widget--has-space-bottom-small   c-widget c-widget--pdf-arcaristics align c-widget--pdf-arcaristics c-widget--bg-stretch\"\n    data-block_faaacd23d86907b70442cb65bf422fb5\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n    \n            \n        \n  <div class=\"o-wrapper\">\n        <div class=\"c-pdf-magazin\">\n        <div class=\"columns is-centered\">\n          <div class=\"columns column is-12-mobile is-11-desktop is-multiline is-mobile\">\n\n                        <div id=\"pdf-1575193626\"><\/div>\n\n            <script>\n              jQuery(document).ready(function () {\n                var $pdf = jQuery(\"#pdf-1575193626\"),\n                pdf = jQuery(\"#pdf-1575193626\").flipBook({\n                  pdfUrl: 'https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/12\/EN_Produktflyer_Ecotrol_050324_web.pdf',\n                  layout: 1,\n                  icon: 'material',\n                  backgroundColor: '',\n                  backgroundImage: '',\n\n                  pdfTextLayer: false,\n                  rotateCameraOnMouseDrag: false,\n\n                  menu2OverBook: true,\n                  menu2Transparent: false,\n                  menu2Floating : true,\n\n                  menuOverBook: true,\n                  menuTransparent: false,\n                  menuFloating: true,\n\n                  floatingBtnBackground: 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durchsuchen',\n                    pagesFoundContaining: 'Seiten die den Suchbegriff beinhalten',\n                    noMatches: 'Keine Ergebnisse gefunden',\n                    matchesFound: 'Ergebnisse gefunden',\n\n                    thumbnails: 'Seitenvorschau',\n                    tableOfContent: 'Inhaltsverzeichnis',\n                    share: 'Teilen',\n\n                    pressEscToClose:'ESC-Taste zum schlie\u00dfen dr\u00fccken',\n\n                    password: 'Passwort',\n\n\n                  },\n\n                });\n\n                var mutationObserver = new MutationObserver(function(mutations) {\n                  mutations.forEach(function(mutation) {\n                    if(mutation.target.nodeName.toLowerCase() == 'div') {\n                      if(pdf.zoom >= 1) {\n                        $pdf.addClass('has-zoom');\n                      } else {\n                        $pdf.removeClass('has-zoom');\n                      }\n                    }\n       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\n      <\/div>\n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n          \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\" c-widget--has-space-top-small   c-widget c-widget--steps-popup align \"\n    data-block_a9e6a9d8ed71da941fc881af2d344dbe\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n          <div class=\"o-wrapper\">\n    \n            \n  \n  <div class=\"columns is-mobile is-multiline\">\n\n          <div class=\"column is-full\">\n        <h3>stem sealing<\/h3>\n      <\/div>\n    \n\n    \n      <div class=\"column is-one-third\">\n\n        <div class=\"c-tease c-tease--step\">\n\n  <div class=\"c-tease__image\">\n\n        \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-P1_V-RINGE_1626775377.png\" style=\"background-position: 50% 50%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-P1_V-RINGE_1626775377-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n  <\/div>\n\n  <div class=\"c-tease__title u-text-center\">\n    Low-maintenance PTFE V-ring packing with fine sealing element\n  <\/div>\n\n  <a data-glightbox=\"description: .modal-1867703335; type: content; height: auto; width: 1800px;\" data-gallery=\"1321405302\" class=\"c-tease__link glightbox\"><\/a>\n\n<\/div>\n\n<div hidden style=\"display:none;\" class=\"glightbox-desc modal-1867703335\">\n  <div class=\"c-step\">\n  <div class=\"columns is-multiline c-step__columns\">\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <div class=\"c-step__content\">\n        <h3 class=\"c-step__title\">ECOTROL\u00ae stem sealing<\/h3>\n        <div class=\"c-step__description\"><h3>Low-maintenance PTFE V-ring packing with fine sealing element<\/h3>\n<p>This packing consists of graphite PTFE and pure PTFE V-rings. This makes them insensitive to strongly fluctuating operating temperatures. The corrosion-resistant preloading spring arranged under the packing effects the self-adjustment of the stem sealing and ensures a sufficient sealing force even at low pressure. An elastomer fine sealing element seals to the stuffing box. A wiper protects against dirt from the outside. This version is also certified according to TA-Luft \/ ISO 15848 with a special PTFE compound for the temperature range from -46\u00a0\u00b0C to 200\u00a0\u00b0C.<\/p>\n<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <h3 class=\"c-step__title c-step__title--mobile\">ECOTROL\u00ae stem sealing<\/h3>\n\n      <div class=\"c-step__image\">\n\n                \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-P1_V-RINGE_1626775377.png\" style=\"background-position: 50% 50%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-P1_V-RINGE_1626775377-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n      <\/div>\n    <\/div>\n\n  <\/div>\n<\/div>\n<\/div>\n\n      <\/div>\n\n    \n      <div class=\"column is-one-third\">\n\n        <div class=\"c-tease c-tease--step\">\n\n  <div class=\"c-tease__image\">\n\n        \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-P1_PACKUNGSRINGE_1626774035.png\" style=\"background-position: 50% 50%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-P1_PACKUNGSRINGE_1626774035-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n  <\/div>\n\n  <div class=\"c-tease__title u-text-center\">\n    Stuffing box with packing rings\n  <\/div>\n\n  <a data-glightbox=\"description: .modal-666657960; type: content; height: auto; width: 1800px;\" data-gallery=\"1321405302\" class=\"c-tease__link glightbox\"><\/a>\n\n<\/div>\n\n<div hidden style=\"display:none;\" class=\"glightbox-desc modal-666657960\">\n  <div class=\"c-step\">\n  <div class=\"columns is-multiline c-step__columns\">\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <div class=\"c-step__content\">\n        <h3 class=\"c-step__title\">ECOTROL\u00ae stem sealing<\/h3>\n        <div class=\"c-step__description\"><h3>Stuffing box with packing rings<\/h3>\n<p>Various packing materials are available for the classic type of adjustable stem sealing. Decisive for high, long-lasting leak-tightness, however, is the uniform pressing of the individual packing rings or the cords. With the patented OPTIPRESS\u00ae preloading device, all rings of a packing are pressed with almost the same preload. The sealing effect is optimally distributed over the packing height.<\/p>\n<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <h3 class=\"c-step__title c-step__title--mobile\">ECOTROL\u00ae stem sealing<\/h3>\n\n      <div class=\"c-step__image\">\n\n                \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-P1_PACKUNGSRINGE_1626774035.png\" style=\"background-position: 50% 50%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-P1_PACKUNGSRINGE_1626774035-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n      <\/div>\n    <\/div>\n\n  <\/div>\n<\/div>\n<\/div>\n\n      <\/div>\n\n    \n      <div class=\"column is-one-third\">\n\n        <div class=\"c-tease c-tease--step\">\n\n  <div class=\"c-tease__image\">\n\n        \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C5-P1_ISOLIERSAeULE_1626775596.png\" style=\"background-position: 50% 50%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C5-P1_ISOLIERSAeULE_1626775596-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n  <\/div>\n\n  <div class=\"c-tease__title u-text-center\">\n    Extension for low temperatures\n  <\/div>\n\n  <a data-glightbox=\"description: .modal-861169592; type: content; height: auto; width: 1800px;\" data-gallery=\"1321405302\" class=\"c-tease__link glightbox\"><\/a>\n\n<\/div>\n\n<div hidden style=\"display:none;\" class=\"glightbox-desc modal-861169592\">\n  <div class=\"c-step\">\n  <div class=\"columns is-multiline c-step__columns\">\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <div class=\"c-step__content\">\n        <h3 class=\"c-step__title\">ECOTROL\u00ae stem sealing<\/h3>\n        <div class=\"c-step__description\"><h3>Extension for low temperatures<\/h3>\n<p>A sufficient distance between the valve actuator and the functional unit in the process is required for the low temperature range. For these icy conditions we offer you a special ECOTROL<sup>\u00ae<\/sup> stem extension, which is guided in a thin-walled insulating column. The stem extension is optionally filled with an insulator. This minimises losses due to heat conduction and heat radiation. We adapt the dimensions of the extension individually to the requirements of your system.<\/p>\n<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <h3 class=\"c-step__title c-step__title--mobile\">ECOTROL\u00ae stem sealing<\/h3>\n\n      <div class=\"c-step__image\">\n\n                \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C5-P1_ISOLIERSAeULE_1626775596.png\" style=\"background-position: 50% 50%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C5-P1_ISOLIERSAeULE_1626775596-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n      <\/div>\n    <\/div>\n\n  <\/div>\n<\/div>\n<\/div>\n\n      <\/div>\n\n    \n      <div class=\"column is-one-third\">\n\n        <div class=\"c-tease c-tease--step\">\n\n  <div class=\"c-tease__image\">\n\n        \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C3-P1_KUeHLRIPPEN_1626775667.png\" style=\"background-position: 50% 50%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C3-P1_KUeHLRIPPEN_1626775667-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n  <\/div>\n\n  <div class=\"c-tease__title u-text-center\">\n    Cooling fins for high temperatures\n  <\/div>\n\n  <a data-glightbox=\"description: .modal-1341025224; type: content; height: auto; width: 1800px;\" data-gallery=\"1321405302\" class=\"c-tease__link glightbox\"><\/a>\n\n<\/div>\n\n<div hidden style=\"display:none;\" class=\"glightbox-desc modal-1341025224\">\n  <div class=\"c-step\">\n  <div class=\"columns is-multiline c-step__columns\">\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <div class=\"c-step__content\">\n        <h3 class=\"c-step__title\">ECOTROL\u00ae stem sealing<\/h3>\n        <div class=\"c-step__description\"><h3>Cooling fins for high temperatures<\/h3>\n<p>At operating temperatures above 250&nbsp;\u00b0C, cooling fin attachments are often used in conjunction with a graphite packing. These effect heat radiation and protect the packing material from overheating. If the operating temperature is above 450&nbsp;\u00b0C, the individual design of the cooling fin attachment ensures that the temperature in the packing area does not exceed 450&nbsp;\u00b0C, even in the worst case.<\/p>\n<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <h3 class=\"c-step__title c-step__title--mobile\">ECOTROL\u00ae stem sealing<\/h3>\n\n      <div class=\"c-step__image\">\n\n                \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C3-P1_KUeHLRIPPEN_1626775667.png\" style=\"background-position: 50% 50%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C3-P1_KUeHLRIPPEN_1626775667-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n      <\/div>\n    <\/div>\n\n  <\/div>\n<\/div>\n<\/div>\n\n      <\/div>\n\n    \n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-block_a9e6a9d8ed71da941fc881af2d344dbe] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n    \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\"   c-widget c-widget-- \"\n    data-\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n          <div class=\"o-wrapper\">\n    \n            \n  <div class=\"columns is-centered\">\n    <div class=\"column is-8-desktop\">\n        \n      <\/div>\n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n          \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\" c-widget--has-space-top-small   c-widget c-widget--steps-popup align \"\n    data-block_7625d31385101b33281233cc58abae40\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n          <div class=\"o-wrapper\">\n    \n            \n  \n  <div class=\"columns is-mobile is-multiline\">\n\n          <div class=\"column is-full\">\n        <h3>trims<\/h3>\n      <\/div>\n    \n\n    \n      <div class=\"column is-one-third\">\n\n        <div class=\"c-tease c-tease--step\">\n\n  <div class=\"c-tease__image\">\n\n        \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-D_DREHSCHIEBERVENTIL_1626775745.png\" style=\"background-position: 54.08% 49.92%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-D_DREHSCHIEBERVENTIL_1626775745-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n  <\/div>\n\n  <div class=\"c-tease__title u-text-center\">\n    Rotary gate valve trim\n  <\/div>\n\n  <a data-glightbox=\"description: .modal-1003681227; type: content; height: auto; width: 1800px;\" data-gallery=\"2030828305\" class=\"c-tease__link glightbox\"><\/a>\n\n<\/div>\n\n<div hidden style=\"display:none;\" class=\"glightbox-desc modal-1003681227\">\n  <div class=\"c-step\">\n  <div class=\"columns is-multiline c-step__columns\">\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <div class=\"c-step__content\">\n        <h3 class=\"c-step__title\">ECOTROL\u00ae trims<\/h3>\n        <div class=\"c-step__description\"><h3>Rotary gate valve trim<\/h3>\n<p>The ECOTROL<sup>\u00ae<\/sup> rotary gate valve trim offers an optimal solution for the precise control of small quantities. This new system consists of two slices with a lapped surface, each with a bore each, which are pressed together by means of a spring and by the differential pressure. This guarantees absolute leak-tightness, as manufacturing tolerances and thermal expansion no longer play a role. The almost equal percentage control characteristic is achieved through a tangential flow channel, which opens into the bore of this slice. Due to the self-cleaning effect as well as the comprehensive material selection for the throttle element (including ceramic), this system is the first choice in particular for high differential pressures and critical media.<\/p>\n<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"column is-full-mobile is-half-tablet c-step__column\">\n      <h3 class=\"c-step__title c-step__title--mobile\">ECOTROL\u00ae trims<\/h3>\n\n      <div class=\"c-step__image\">\n\n                \n  <div class=\"c-img c-img--square\">\n    <div class=\"c-img__full u-lazy\" data-background-image=\"https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-D_DREHSCHIEBERVENTIL_1626775745.png\" style=\"background-position: 54.08% 49.92%;\"><\/div>\n    <div class=\"c-img__placeholder\" style=\"background-image: url(https:\/\/arca-valve.com\/wp-content\/uploads\/2021\/07\/8C1-D_DREHSCHIEBERVENTIL_1626775745-16x0-c-default.png)\"><\/div>\n  <\/div>\n\n      <\/div>\n    <\/div>\n\n  <\/div>\n<\/div>\n<\/div>\n\n      <\/div>\n\n    \n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-block_7625d31385101b33281233cc58abae40] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n    \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\"   c-widget c-widget-- \"\n    data-\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n          <div class=\"o-wrapper\">\n    \n            \n  <div class=\"columns is-centered\">\n    <div class=\"column is-8-desktop\">\n        \n      <\/div>\n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n                \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\" c-widget--has-space-top-small c-widget--has-space-bottom-big   c-widget c-widget--key-facts align \"\n    data-block_b04f1cce4e0cbf0b406e285ca7ab3372\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n    \n            \n  \n<div class=\"c-slider c-slider--keyfacts c-slider--has-navigation c-slider--single-item\" data-swiper-slider>\n  <div class=\"swiper-container swiper-container--main\" data-swiper-options='{\"autoplay\":{\"delay\":3000,\"disableOnInteraction\":false,\"pauseOnMouseEnter\":true},\"spaceBetween\":10,\"loop\":true,\"loopedSlides\":1,\"slidesPerView\":1,\"autoHeight\":true}'>\n    <div class=\"swiper-wrapper\">\n\n      \n      \n        <div class=\"swiper-slide\">\n\n          <div class=\"c-keyfact\">\n                          <div class=\"c-keyfact__label\">HIGHLIGHTS<\/div>\n                                      <div class=\"c-keyfact__text\">Klemmsitz-System f\u00fcr h\u00f6chste Sicherheit und einfache Wartung<\/div>\n                      <\/div>\n\n        <\/div>\n\n      \n        <div class=\"swiper-slide\">\n\n          <div class=\"c-keyfact\">\n                          <div 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class=\"c-keyfact__label\">HIGHLIGHTS<\/div>\n                                      <div class=\"c-keyfact__text\">Modular system of trims for every application<\/div>\n                      <\/div>\n\n        <\/div>\n\n      \n    \n    <\/div>\n\n    \n    \n      \n      <div class=\"swiper-button-prev\">\n        <svg>\n          <use xlink:href=\"#icon-arrow-left\"><\/use>\n        <\/svg>\n      <\/div>\n\n      \n      <div class=\"swiper-button-next\">\n        <svg>\n          <use xlink:href=\"#icon-arrow-right\"><\/use>\n        <\/svg>\n      <\/div>\n\n      \n    \n    \n        \n  <\/div>\n\n  \n\n<\/div>\n\n\n    \n              <style type=\"text\/css\">\n        [data-block_b04f1cce4e0cbf0b406e285ca7ab3372] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n    \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\"   c-widget c-widget-- \"\n    data-\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n          <div class=\"o-wrapper\">\n    \n            \n  <div class=\"columns is-centered\">\n    <div class=\"column is-8-desktop\">\n        \n      <\/div>\n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n                \n  \n    \n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\" c-widget--has-space-top-big c-widget--has-space-bottom-default  c-widget--has-gradient  c-widget c-widget--accordion align \"\n    data-block_4b46dc1447d25dda8dde88b669ef536a\n    style=\"--bg-color: inherit;--font-color: #ffffff;--main-color: #fff;\"  >\n\n          <div class=\"o-wrapper\">\n    \n            \n  \n  <div class=\"columns is-centered\">\n    <div class=\"column is-8-desktop\">\n\n              <div class=\"c-accordion__headline\">Frequently Asked Questions \u2013 ECOTROL\u00ae rotary control valve<\/div>\n      \n      <div class=\"c-accordion\">\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-1\">What sets the ECOTROL\u00ae rotary control valve apart?<\/div>\n          <div class=\"c-accordion__content is-expanded\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-1\">\n            <p>The ECOTROL\u00ae rotary control valve is a compact specialist within the ECOTROL\u00ae family, engineered for the precise control of very small flow rates \u2013 even under the most demanding process conditions. Instead of the classic plug-and-seat trim, the valve uses a pair of lapped throttling discs that open and close through a 0\u00b0\u201390\u00b0 rotary motion. This delivers a 100:1 rangeability with Kvs values down to 0.01 m\u00b3\/h and an exceptionally robust construction for abrasive or critical media.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-2\">How does the rotary control valve differ from the ECOTROL\u00ae globe-style control valve?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-2\">\n            <p>The globe-style ECOTROL\u00ae uses a linear up-and-down stroke of stem and plug and is designed for large flow rates up to Kvs 7,000 m\u00b3\/h and nominal sizes up to DN 700. The rotary control valve, by contrast, modulates flow through a rotary motion of the upper throttling disc and is dedicated to very small flows (Kvs from 0.01 m\u00b3\/h) and high differential pressures. It delivers 100:1 rangeability (vs. 40:1\u201350:1 for the globe version), an inherent near-quadratic characteristic, and a quarter-turn actuator interface to DIN EN ISO 5210 F07. Body, end connections and most stem sealing options are identical \u2013 so an existing ECOTROL\u00ae globe valve can in many cases be converted to the rotary disc trim.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-3\">How does the rotary disc trim work technically?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-3\">\n            <p>The trim consists of two lapped throttling discs. The lower disc is fixed in the valve body and contains one or two flow bores with radial V-shaped channels whose cross-section widens steadily \u2013 analogous to a V-port plug. The upper disc is coupled to the valve shaft and rotated by the quarter-turn actuator between 0\u00b0 (closed) and 90\u00b0 (fully open). A compression spring plus the line differential pressure press the discs together with a defined force, ensuring reliable shut-off. Depending on the rotation angle, a precisely defined cross-section of the V-channels is exposed to the flow.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-4\">Which applications is the ECOTROL\u00ae rotary control valve particularly suited for?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-4\">\n            <p>Typical applications include the precise control of minimum and metering flows, handling of high differential pressures in a compact envelope, and service with abrasive, particle-laden or cavitation-prone media. The valve is frequently deployed in pilot and start-up lines, in chemical and petrochemical processes, in pharma and biotech plants, in boiler feedwater minimum-flow recirculation, and as a flow control element in pressure swing adsorption plants. It is also widely used in pilot plants and R&#038;D installations as a high-precision flow trim.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-5\">Which nominal sizes and pressure ratings are available?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-5\">\n            <p>The ECOTROL\u00ae rotary control valve is offered in two series. The 8C D series covers DN 15\u201350 (\u00bd\u2033\u20132\u2033) at PN 16\u201363 \/ ANSI Class 150\u2013600 and is the all-rounder for standard applications. The 6H D series is engineered for high-pressure service at PN 100\u2013250 \/ ANSI Class 900\u20131500 and is used wherever extremely high differential pressures have to be handled.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-6\">What temperature range does the rotary control valve cover?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-6\">\n            <p>The permitted media temperature range is from \u201346 \u00b0C to +500 \u00b0C, determined by the combination of body material, stem seal and throttling-disc compression spring. With the standard 1.4310 spring, temperatures up to 300 \u00b0C are possible; with an Inconel X750\u00ae spring, up to 500 \u00b0C. A dedicated cryogenic version with extended bonnet (DEK5) is available for low-temperature service; an optional heating jacket with DN 15 PN 40 flange connections is also available.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-7\">What flow characteristic and rangeability does the rotary control valve achieve?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-7\">\n            <p>The rotary control valve has an inherent, near-quadratic flow characteristic \u2013 ideal for fine control of small flow rates. The rangeability of 100:1 is significantly higher than that of typical globe valves. This makes it possible to maintain accurate control across very narrow flow bands without losing resolution at the lower end of the range.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-8\">Which Kvs values are available for the rotary control valve?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-8\">\n            <p>Kvs values from 0.01 m\u00b3\/h up to 1.00 m\u00b3\/h are available, depending on the number of flow channels (one or two) and the characteristic curve (A or B). This covers virtually any small-flow control duty in practice; even micro-dosing tasks with Kvs below 0.1 m\u00b3\/h can be accommodated without a custom design.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-9\">Which materials are available for the throttling discs?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-9\">\n            <p>The standard throttling discs are hardened 1.4112 for general service up to 300 \u00b0C, or up to 400 \u00b0C with an Inconel spring. For galling-prone or highly abrasive media, Nitronic 60 is used. For maximum wear resistance under high differential pressure and aggressive media, throttling discs in tungsten carbide are available \u2013 rated up to 500 \u00b0C. Special materials can be supplied on request.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-10\">Which materials can be selected for the valve body?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-10\">\n            <p>Bodies are supplied in cast steel (1.0619 GP240GH \/ A216 WCB), stainless steel (1.4408 G-X5CrNiMo19-11-2 \/ A351 CF8M), low-temperature cast steel (1.6220 G20Mn5 \/ A352 LCC) or creep-resistant steel (1.7357 G17CrMo5-5 \/ A217 WC6). The rotary control valve therefore covers cryogenic, hot and corrosive process conditions equally reliably.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-11\">Which stem sealing options are available?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-11\">\n            <p>The standard solution is a maintenance-free PTFE V-ring packing with a self-adjusting stainless-steel spring (EPDM or FKM profile rings, depending on medium and temperature). Optional adjustable gland packings in PTFE braided packing, reinforced graphite\/Inconel or pure graphite are available \u2013 rated up to 500 \u00b0C. For cryogenic service, the PTFE V-ring packing is combined with the DEK5 extended bonnet.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-12\">Which seat leakage classes does the rotary control valve meet?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-12\">\n            <p>Class IV to IEC 60534-4 is achieved as standard (max. 0.01 % of Kvs). Class V with lapped sealing surfaces is available on request. Because the throttling discs are pressed together evenly by spring force and line differential pressure, the shut-off tightness remains very stable over the valve&#8217;s service life.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-13\">Which actuators are used, and how is the actuator interface configured?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-13\">\n            <p>The rotary control valve requires a quarter-turn actuator. The interface is built to DIN EN ISO 5210 F07 and accepts a backlash-free shaft coupling SW17. The standard solution is the pneumatic ARCATORQUE\u00ae 841 quarter-turn actuator; electric or hydraulic quarter-turn actuators can be fitted as alternatives. Important: the actuator should provide adjustable mechanical stops at both end positions, and the valve opens by anti-clockwise rotation.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-14\">What maximum differential pressures are possible?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-14\">\n            <p>The 8C D series is rated for a maximum differential pressure of 100 bar in the closed position, with a required actuator torque of 10 Nm (40 Nm permitted). The 6H D series handles up to 250 bar differential pressure with an actuator torque of 16 Nm. This makes the rotary control valve outstandingly suitable for high-pressure minimum-flow control and small-scale anti-surge duty.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-15\">Which end connections are available?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-15\">\n            <p>Flanged connections to DIN EN 1092-1 or ASME B16.5, in RF and RTJ designs, are available as standard. Butt-weld ends to DIN EN 12627 \/ ASME B16.25 and extended weld ends (for reduced heat-affected zones) are available on request. This allows the valve to be installed in virtually any piping environment without custom adaptation.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-16\">Can an existing ECOTROL\u00ae globe valve be converted to a rotary control valve?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-16\">\n            <p>Yes. The rotary disc trim is built on the same ECOTROL\u00ae body platform. An existing ECOTROL\u00ae globe-style control valve of the 8C or 6H series in the corresponding small sizes can therefore, in many cases, be converted to a rotary-disc solution by simply exchanging the trim and bonnet assembly. This saves capital cost, preserves the piping infrastructure and enables precise small-flow control without a complete new investment.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-17\">How does the self-cleaning effect of the throttling discs work in practice?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-17\">\n            <p>Every stroke involves a sliding motion of the upper disc against the fixed lower disc. Particles entering the sealing gap are moved tangentially out of the gap \u2013 in contrast to classical globe-valve kinematics, where dirt can settle into the seating surface. This self-cleaning action prevents fouling of the sealing surfaces and makes the rotary control valve particularly reliable on crystallising, polymerising or particle-laden media.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-18\">What should be considered for installation and commissioning?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-18\">\n            <p>Recommended installation is in a horizontal pipe run with the actuator above the valve and in line with the flow arrows on the body. A straight pipe section of at least 10 \u00d7 nominal diameter should be provided both upstream and downstream as a stabilisation zone. A bypass line with isolation valves and a strainer upstream of the valve are strongly recommended. The valve opens anti-clockwise \u2013 the actuator must be fitted with adjustable mechanical stops at both end positions. Thermal shock should be avoided: above a temperature differential of 300 K, the recommended ramp rate is no more than 2 K\/min.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-19\">Which service offerings and digital tools does ARCA provide?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-19\">\n            <p>The full ARCA service portfolio is available for the rotary control valve as well: ARCAlaunch supports commissioning \u2013 including flushing services, ARCAcare covers preventive maintenance, ARCAsafe ensures spare-parts availability, ARCA24\/7 guarantees telephone support around the clock, and ARCAknowhow delivers hands-on training. Sizing is performed in the ARCA-VENA software; via the ARCAonsite platform, all documents (equipment passport, data sheet, operating manual, spare parts, maintenance history) are available via QR code directly at the valve.<\/p>\n\n          <\/div>\n\n        <\/div>\n              <div class=\"c-accordion__element\">\n\n          <div class=\"c-accordion__title\" data-houdini-toggle=\"accordion-106417392-20\">Which standards and certifications does the rotary control valve comply with?<\/div>\n          <div class=\"c-accordion__content\" data-houdini-group=\"accordion-group-106417392\" id=\"accordion-106417392-20\">\n            <p>The ECOTROL\u00ae rotary control valve is designed in accordance with the Pressure Equipment Directive 2014\/68\/EU; the pressure-containing shell is engineered to EN 12516-2 \/ ASME B16.34, with seat leakage tested to IEC 60534-4. With respect to explosion protection, an ignition-hazard assessment to DIN EN ISO 80079-36 has demonstrated that the valve itself contains no inherent ignition source and is therefore not within the scope of the ATEX Directive 2014\/34\/EU (manufacturer&#8217;s declaration available). Optional designs to AD 2000, NACE MR0175 and oxygen service are available on request.<\/p>\n\n          <\/div>\n\n        <\/div>\n            <\/div>\n\n    <\/div>\n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-block_4b46dc1447d25dda8dde88b669ef536a] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n    \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\"   c-widget c-widget-- \"\n    data-\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n          <div class=\"o-wrapper\">\n    \n            \n  <div class=\"columns is-centered\">\n    <div class=\"column is-8-desktop\">\n        \n      <\/div>\n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-] {\n        }\n      <\/style>\n      <\/section>\n\n  \n\n                \n  \n\n\n\n  \n  \n\n\n  <section\n    id=\"\"\n    class=\" c-widget--has-space-top-default c-widget--has-space-bottom-default   c-widget c-widget--text align \"\n    data-block_5e63d7c6aac63c7d3ed09a7a08365332\n    style=\"--bg-color: inherit;--font-color: inherit;--main-color: #fff;\"  >\n\n          <div class=\"o-wrapper\">\n    \n            \n  <div class=\"columns is-centered\">\n    <div class=\"column is-8-desktop\">\n        <p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What sets the ECOTROL\u00ae rotary control valve apart?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The ECOTROL\u00ae rotary control valve is a compact specialist within the ECOTROL\u00ae family, engineered for the precise control of very small flow rates \u2013 even under the most demanding process conditions. Instead of the classic plug-and-seat trim, the valve uses a pair of lapped throttling discs that open and close through a 0\u00b0\u201390\u00b0 rotary motion. This delivers a 100:1 rangeability with Kvs values down to 0.01 m\u00b3\/h and an exceptionally robust construction for abrasive or critical media.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does the rotary control valve differ from the ECOTROL\u00ae globe-style control valve?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The globe-style ECOTROL\u00ae uses a linear up-and-down stroke of stem and plug and is designed for large flow rates up to Kvs 7,000 m\u00b3\/h and nominal sizes up to DN 700. The rotary control valve, by contrast, modulates flow through a rotary motion of the upper throttling disc and is dedicated to very small flows (Kvs from 0.01 m\u00b3\/h) and high differential pressures. It delivers 100:1 rangeability (vs. 40:1\u201350:1 for the globe version), an inherent near-quadratic characteristic, and a quarter-turn actuator interface to DIN EN ISO 5210 F07. Body, end connections and most stem sealing options are identical \u2013 so an existing ECOTROL\u00ae globe valve can in many cases be converted to the rotary disc trim.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does the rotary disc trim work technically?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The trim consists of two lapped throttling discs. The lower disc is fixed in the valve body and contains one or two flow bores with radial V-shaped channels whose cross-section widens steadily \u2013 analogous to a V-port plug. The upper disc is coupled to the valve shaft and rotated by the quarter-turn actuator between 0\u00b0 (closed) and 90\u00b0 (fully open). A compression spring plus the line differential pressure press the discs together with a defined force, ensuring reliable shut-off. Depending on the rotation angle, a precisely defined cross-section of the V-channels is exposed to the flow.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which applications is the ECOTROL\u00ae rotary control valve particularly suited for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Typical applications include the precise control of minimum and metering flows, handling of high differential pressures in a compact envelope, and service with abrasive, particle-laden or cavitation-prone media. The valve is frequently deployed in pilot and start-up lines, in chemical and petrochemical processes, in pharma and biotech plants, in boiler feedwater minimum-flow recirculation, and as a flow control element in pressure swing adsorption plants. It is also widely used in pilot plants and R&D installations as a high-precision flow trim.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which nominal sizes and pressure ratings are available?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The ECOTROL\u00ae rotary control valve is offered in two series. The 8C D series covers DN 15\u201350 (\u00bd\u2033\u20132\u2033) at PN 16\u201363 \/ ANSI Class 150\u2013600 and is the all-rounder for standard applications. The 6H D series is engineered for high-pressure service at PN 100\u2013250 \/ ANSI Class 900\u20131500 and is used wherever extremely high differential pressures have to be handled.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What temperature range does the rotary control valve cover?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The permitted media temperature range is from \u201346 \u00b0C to +500 \u00b0C, determined by the combination of body material, stem seal and throttling-disc compression spring. With the standard 1.4310 spring, temperatures up to 300 \u00b0C are possible; with an Inconel X750\u00ae spring, up to 500 \u00b0C. A dedicated cryogenic version with extended bonnet (DEK5) is available for low-temperature service; an optional heating jacket with DN 15 PN 40 flange connections is also available.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What flow characteristic and rangeability does the rotary control valve achieve?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The rotary control valve has an inherent, near-quadratic flow characteristic \u2013 ideal for fine control of small flow rates. The rangeability of 100:1 is significantly higher than that of typical globe valves. This makes it possible to maintain accurate control across very narrow flow bands without losing resolution at the lower end of the range.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which Kvs values are available for the rotary control valve?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Kvs values from 0.01 m\u00b3\/h up to 1.00 m\u00b3\/h are available, depending on the number of flow channels (one or two) and the characteristic curve (A or B). This covers virtually any small-flow control duty in practice; even micro-dosing tasks with Kvs below 0.1 m\u00b3\/h can be accommodated without a custom design.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which materials are available for the throttling discs?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The standard throttling discs are hardened 1.4112 for general service up to 300 \u00b0C, or up to 400 \u00b0C with an Inconel spring. For galling-prone or highly abrasive media, Nitronic 60 is used. For maximum wear resistance under high differential pressure and aggressive media, throttling discs in tungsten carbide are available \u2013 rated up to 500 \u00b0C. Special materials can be supplied on request.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which materials can be selected for the valve body?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Bodies are supplied in cast steel (1.0619 GP240GH \/ A216 WCB), stainless steel (1.4408 G-X5CrNiMo19-11-2 \/ A351 CF8M), low-temperature cast steel (1.6220 G20Mn5 \/ A352 LCC) or creep-resistant steel (1.7357 G17CrMo5-5 \/ A217 WC6). The rotary control valve therefore covers cryogenic, hot and corrosive process conditions equally reliably.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which stem sealing options are available?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The standard solution is a maintenance-free PTFE V-ring packing with a self-adjusting stainless-steel spring (EPDM or FKM profile rings, depending on medium and temperature). Optional adjustable gland packings in PTFE braided packing, reinforced graphite\/Inconel or pure graphite are available \u2013 rated up to 500 \u00b0C. For cryogenic service, the PTFE V-ring packing is combined with the DEK5 extended bonnet.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which seat leakage classes does the rotary control valve meet?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Class IV to IEC 60534-4 is achieved as standard (max. 0.01 % of Kvs). Class V with lapped sealing surfaces is available on request. Because the throttling discs are pressed together evenly by spring force and line differential pressure, the shut-off tightness remains very stable over the valve's service life.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which actuators are used, and how is the actuator interface configured?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The rotary control valve requires a quarter-turn actuator. The interface is built to DIN EN ISO 5210 F07 and accepts a backlash-free shaft coupling SW17. The standard solution is the pneumatic ARCATORQUE\u00ae 841 quarter-turn actuator; electric or hydraulic quarter-turn actuators can be fitted as alternatives. Important: the actuator should provide adjustable mechanical stops at both end positions, and the valve opens by anti-clockwise rotation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What maximum differential pressures are possible?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 8C D series is rated for a maximum differential pressure of 100 bar in the closed position, with a required actuator torque of 10 Nm (40 Nm permitted). The 6H D series handles up to 250 bar differential pressure with an actuator torque of 16 Nm. This makes the rotary control valve outstandingly suitable for high-pressure minimum-flow control and small-scale anti-surge duty.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which end connections are available?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Flanged connections to DIN EN 1092-1 or ASME B16.5, in RF and RTJ designs, are available as standard. Butt-weld ends to DIN EN 12627 \/ ASME B16.25 and extended weld ends (for reduced heat-affected zones) are available on request. This allows the valve to be installed in virtually any piping environment without custom adaptation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can an existing ECOTROL\u00ae globe valve be converted to a rotary control valve?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The rotary disc trim is built on the same ECOTROL\u00ae body platform. An existing ECOTROL\u00ae globe-style control valve of the 8C or 6H series in the corresponding small sizes can therefore, in many cases, be converted to a rotary-disc solution by simply exchanging the trim and bonnet assembly. This saves capital cost, preserves the piping infrastructure and enables precise small-flow control without a complete new investment.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does the self-cleaning effect of the throttling discs work in practice?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Every stroke involves a sliding motion of the upper disc against the fixed lower disc. Particles entering the sealing gap are moved tangentially out of the gap \u2013 in contrast to classical globe-valve kinematics, where dirt can settle into the seating surface. This self-cleaning action prevents fouling of the sealing surfaces and makes the rotary control valve particularly reliable on crystallising, polymerising or particle-laden media.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What should be considered for installation and commissioning?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Recommended installation is in a horizontal pipe run with the actuator above the valve and in line with the flow arrows on the body. A straight pipe section of at least 10 \u00d7 nominal diameter should be provided both upstream and downstream as a stabilisation zone. A bypass line with isolation valves and a strainer upstream of the valve are strongly recommended. The valve opens anti-clockwise \u2013 the actuator must be fitted with adjustable mechanical stops at both end positions. Thermal shock should be avoided: above a temperature differential of 300 K, the recommended ramp rate is no more than 2 K\/min.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which service offerings and digital tools does ARCA provide?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The full ARCA service portfolio is available for the rotary control valve as well: ARCAlaunch supports commissioning \u2013 including flushing services, ARCAcare covers preventive maintenance, ARCAsafe ensures spare-parts availability, ARCA24\/7 guarantees telephone support around the clock, and ARCAknowhow delivers hands-on training. Sizing is performed in the ARCA-VENA software; via the ARCAonsite platform, all documents (equipment passport, data sheet, operating manual, spare parts, maintenance history) are available via QR code directly at the valve.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which standards and certifications does the rotary control valve comply with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The ECOTROL\u00ae rotary control valve is designed in accordance with the Pressure Equipment Directive 2014\/68\/EU; the pressure-containing shell is engineered to EN 12516-2 \/ ASME B16.34, with seat leakage tested to IEC 60534-4. With respect to explosion protection, an ignition-hazard assessment to DIN EN ISO 80079-36 has demonstrated that the valve itself contains no inherent ignition source and is therefore not within the scope of the ATEX Directive 2014\/34\/EU (manufacturer's declaration available). Optional designs to AD 2000, NACE MR0175 and oxygen service are available on request.\"\n      }\n    }\n  ]\n}\n<\/script><\/p>\n\n      <\/div>\n  <\/div>\n\n\n          <\/div>\n    \n              <style type=\"text\/css\">\n        [data-block_5e63d7c6aac63c7d3ed09a7a08365332] {\n        }\n      <\/style>\n      <\/section>\n\n","protected":false},"author":13,"parent":0,"menu_order":1,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"produkt-kategorie":[79],"class_list":["post-17037","produkte","type-produkte","status-publish","hentry","produkt-kategorie-control-valves"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ECOTROL\u00ae Rotary Control Valve | ARCA<\/title>\n<meta name=\"description\" content=\"ECOTROL\u00ae Rotary Control Valve, the specialist from ARCA \u27a4 compact &amp; precise | for steam, gas, oil &amp; critical fluids\" 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