{"id":269,"date":"2018-08-05T11:11:44","date_gmt":"2018-08-05T09:11:44","guid":{"rendered":"https:\/\/www.as-schneider.blog\/?p=269"},"modified":"2023-05-31T09:37:12","modified_gmt":"2023-05-31T07:37:12","slug":"small-but-powerful-low-torque-for-a-smooth-operation","status":"publish","type":"post","link":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/","title":{"rendered":"Small, but powerful: Low torque for a smooth operation"},"content":{"rendered":"\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t

Small, but powerful: Low torque for a smooth operation<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t

During my last 12 years in the instrumentation business I have been asked many times at which pressure a manifold can still be operated. As well as, what is the difference between the following two non-rotating stem designs:<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\"Stem\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t

Let me explain the difference:\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t

At the non-rotating stem design with interface\u00a0above<\/b>\u00a0the packing, the needle is conducting an up-and-down movement only. When opening\/closing the valve, any spot on the needle covers a distance of 4 mm.<\/p>

At the non-rotating stem design with interface\u00a0below<\/b>\u00a0the packing, the needle is covering a much longer distance (94 mm), if we are calculating with the same dimensions (stem \u00d8 7.5 mm x \u03c0 x 4 mm stroke). This difference of 4 mm to 94 mm is resulting in a smooth operation. The short distance of 4 mm is resulting in a smooth operation and minimum wear of sealing elements and gives a long service life.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t

Why is it important to use a back seat?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t

Some manufactures are waiving the back seat, this is a safety issue! Using the back seat means releasing the packing stress. Without back seat the packing will be permanently under pressure if the valve is open (this does always apply to Equalizer Valves).<\/p>

Using the back seat design, the packing is only under pressure during the few seconds the valve is operated (either closed or opened). This is tremendously increasing the lifespan of the packing itself. The Fugitive Emission rates are reduced to a minimum (metal to metal back seat).<\/p>

In case of packing failure, there won`t be any leakage if the valve is closed against the back seat.<\/p>

\u00a0<\/div>
(Image source: \u00a9 imhof79ch\/Fotolia & AS-Schneider)<\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

During my last 12 years in the instrumentation business I have been asked many times at which pressure a manifold can still be operated. As well as, what is the difference between the following two non-rotating stem designs:<\/p>\n","protected":false},"author":10,"featured_media":855,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[411],"tags":[477,804,815,906,958,988,1012,1016],"class_list":["post-269","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-safety","tag-back-seat","tag-low-torque","tag-manifold-de","tag-pressure","tag-safety-de","tag-smooth-operation","tag-stem-designs","tag-stem-to-needle-interface"],"acf":[],"yoast_head":"\nSmall, but powerful: Low torque for a smooth operation<\/title>\n<meta name=\"description\" content=\"A lot of our customers ask our experts: At which pressure a manifold can still be operated. Get more information in our blog post.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Small, but powerful: Low torque for a smooth operation\" \/>\n<meta property=\"og:description\" content=\"A lot of our customers ask our experts: At which pressure a manifold can still be operated. Get more information in our blog post.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/\" \/>\n<meta property=\"og:site_name\" content=\"AS-Schneider Blog\" \/>\n<meta property=\"article:published_time\" content=\"2018-08-05T09:11:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-05-31T07:37:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/as-schneider.blog\/wp-content\/uploads\/sites\/16\/2020\/03\/blog-nonrotating-stem-design-low-torque.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Axel Mueller\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Small, but powerful: Low torque for a smooth operation\" \/>\n<meta name=\"twitter:description\" content=\"A lot of our customers ask our experts: At which pressure a manifold can still be operated. Get more information in our blog post.\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Axel Mueller\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/\",\"url\":\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/\",\"name\":\"Small, but powerful: Low torque for a smooth operation\",\"isPartOf\":{\"@id\":\"https:\/\/as-schneider.blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/as-schneider.blog\/wp-content\/uploads\/sites\/16\/2020\/03\/blog-nonrotating-stem-design-low-torque.jpg\",\"datePublished\":\"2018-08-05T09:11:44+00:00\",\"dateModified\":\"2023-05-31T07:37:12+00:00\",\"author\":{\"@id\":\"https:\/\/as-schneider.blog\/#\/schema\/person\/76869ac6fc388d1048fed3f13091f18e\"},\"description\":\"A lot of our customers ask our experts: At which pressure a manifold can still be operated. Get more information in our blog post.\",\"breadcrumb\":{\"@id\":\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#primaryimage\",\"url\":\"https:\/\/as-schneider.blog\/wp-content\/uploads\/sites\/16\/2020\/03\/blog-nonrotating-stem-design-low-torque.jpg\",\"contentUrl\":\"https:\/\/as-schneider.blog\/wp-content\/uploads\/sites\/16\/2020\/03\/blog-nonrotating-stem-design-low-torque.jpg\",\"width\":1000,\"height\":600,\"caption\":\"Difference between non-rotating stem designs for a low torque.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/as-schneider.blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Small, but powerful: Low torque for a smooth operation\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/as-schneider.blog\/#website\",\"url\":\"https:\/\/as-schneider.blog\/\",\"name\":\"AS-Schneider Blog\",\"description\":\"Just another AS-Schneider Inbound Sites site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/as-schneider.blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/as-schneider.blog\/#\/schema\/person\/76869ac6fc388d1048fed3f13091f18e\",\"name\":\"Axel Mueller\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/as-schneider.blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/f12deb44803e9586e79fe9b2765e322e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/f12deb44803e9586e79fe9b2765e322e?s=96&d=mm&r=g\",\"caption\":\"Axel Mueller\"},\"description\":\"I'm Director of Product Management & Marketing at AS-Schneider, one of the World's Leading Manufacturers of Instrumentation and Pipeline Valves. I am involved in the valve business since more than 30 years and thus have a lot of experience in the design, production and sale of valve components. For more than 20 years I shared my experience as a member of several standardization committees within DIN and IEC. During my leisure time my activities are Mountain Biking, going to the gym, traveling and spending time with family and friends.\",\"sameAs\":[\"http:\/\/www.as-schneider.com\"]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Small, but powerful: Low torque for a smooth operation","description":"A lot of our customers ask our experts: At which pressure a manifold can still be operated. Get more information in our blog post.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/","og_locale":"en_US","og_type":"article","og_title":"Small, but powerful: Low torque for a smooth operation","og_description":"A lot of our customers ask our experts: At which pressure a manifold can still be operated. Get more information in our blog post.","og_url":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/","og_site_name":"AS-Schneider Blog","article_published_time":"2018-08-05T09:11:44+00:00","article_modified_time":"2023-05-31T07:37:12+00:00","og_image":[{"width":1000,"height":600,"url":"https:\/\/as-schneider.blog\/wp-content\/uploads\/sites\/16\/2020\/03\/blog-nonrotating-stem-design-low-torque.jpg","type":"image\/jpeg"}],"author":"Axel Mueller","twitter_card":"summary_large_image","twitter_title":"Small, but powerful: Low torque for a smooth operation","twitter_description":"A lot of our customers ask our experts: At which pressure a manifold can still be operated. Get more information in our blog post.","twitter_misc":{"Written by":"Axel Mueller","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/","url":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/","name":"Small, but powerful: Low torque for a smooth operation","isPartOf":{"@id":"https:\/\/as-schneider.blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#primaryimage"},"image":{"@id":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#primaryimage"},"thumbnailUrl":"https:\/\/as-schneider.blog\/wp-content\/uploads\/sites\/16\/2020\/03\/blog-nonrotating-stem-design-low-torque.jpg","datePublished":"2018-08-05T09:11:44+00:00","dateModified":"2023-05-31T07:37:12+00:00","author":{"@id":"https:\/\/as-schneider.blog\/#\/schema\/person\/76869ac6fc388d1048fed3f13091f18e"},"description":"A lot of our customers ask our experts: At which pressure a manifold can still be operated. Get more information in our blog post.","breadcrumb":{"@id":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#primaryimage","url":"https:\/\/as-schneider.blog\/wp-content\/uploads\/sites\/16\/2020\/03\/blog-nonrotating-stem-design-low-torque.jpg","contentUrl":"https:\/\/as-schneider.blog\/wp-content\/uploads\/sites\/16\/2020\/03\/blog-nonrotating-stem-design-low-torque.jpg","width":1000,"height":600,"caption":"Difference between non-rotating stem designs for a low torque."},{"@type":"BreadcrumbList","@id":"https:\/\/as-schneider.blog\/2018\/08\/05\/small-but-powerful-low-torque-for-a-smooth-operation\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/as-schneider.blog\/"},{"@type":"ListItem","position":2,"name":"Small, but powerful: Low torque for a smooth operation"}]},{"@type":"WebSite","@id":"https:\/\/as-schneider.blog\/#website","url":"https:\/\/as-schneider.blog\/","name":"AS-Schneider Blog","description":"Just another AS-Schneider Inbound Sites site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/as-schneider.blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/as-schneider.blog\/#\/schema\/person\/76869ac6fc388d1048fed3f13091f18e","name":"Axel Mueller","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/as-schneider.blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/f12deb44803e9586e79fe9b2765e322e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f12deb44803e9586e79fe9b2765e322e?s=96&d=mm&r=g","caption":"Axel Mueller"},"description":"I'm Director of Product Management & Marketing at AS-Schneider, one of the World's Leading Manufacturers of Instrumentation and Pipeline Valves. I am involved in the valve business since more than 30 years and thus have a lot of experience in the design, production and sale of valve components. For more than 20 years I shared my experience as a member of several standardization committees within DIN and IEC. During my leisure time my activities are Mountain Biking, going to the gym, traveling and spending time with family and friends.","sameAs":["http:\/\/www.as-schneider.com"]}]}},"_links":{"self":[{"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/posts\/269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/comments?post=269"}],"version-history":[{"count":0,"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/posts\/269\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/media\/855"}],"wp:attachment":[{"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/media?parent=269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/categories?post=269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/as-schneider.blog\/wp-json\/wp\/v2\/tags?post=269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}