{"id":303,"date":"2021-04-09T14:15:58","date_gmt":"2021-04-09T06:15:58","guid":{"rendered":"http:\/\/8.140.161.178\/en\/?p=303"},"modified":"2021-12-06T13:57:30","modified_gmt":"2021-12-06T05:57:30","slug":"demco-butterfly-valve","status":"publish","type":"post","link":"http:\/\/laproducts.cn\/en\/?p=303","title":{"rendered":"DEMCO Butterfly valve"},"content":{"rendered":"<p><strong>DEMCO Butterfly valve&nbsp;<\/strong>is a type of flow control device, used to regulate a fluid flowing through a section of pipe.&nbsp;<strong>The valve<\/strong>&nbsp;is similar in operation to a ball&nbsp;<strong>valve<\/strong>. A flat circular plate is positioned in the center of the pipe. The plate has a rod through it connected to a handle on the outside of the valve.<br>Rotating the handle turns the plate either parallel or perpendicular to the flow of water, shutting off the flow. It is a very robust and reliable design. However, unlike the ball valve, the plate does not rotate out of the flow of water, so that a pressure drop is induced in the flow.<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"300\" src=\"http:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55909e5a58763-1.jpg\" alt=\"\" class=\"wp-image-304\" srcset=\"http:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55909e5a58763-1.jpg 400w, http:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55909e5a58763-1-300x225.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><figcaption>DEMCO Butterfly valve<\/figcaption><\/figure><\/div><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"146\" src=\"http:\/\/8.140.161.178\/en\/wp-content\/uploads\/2021\/04\/55598bd0818e7-1.jpg\" alt=\"\" class=\"wp-image-305\" srcset=\"http:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55598bd0818e7-1.jpg 700w, http:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55598bd0818e7-1-600x125.jpg 600w, http:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55598bd0818e7-1-300x63.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>DEMCO Butterfly valve&nbsp;is a type of flow contr [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":304,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-303","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-valve"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DEMCO Butterfly valve - DEZHOU L&amp;A PETROLEUM MACHINERY CO.,LTD<\/title>\n<meta name=\"description\" content=\"DEMCO Butterfly valve\u00a0is a type of flow control device, used to regulate a fluid flowing through a section of pipe.\u00a0The valve\u00a0is similar in operation to a ball\u00a0valve. A flat circular plate is positioned in the center of the pipe. The plate has a rod through it connected to a handle on the outside of the valve.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/laproducts.cn\/en\/?p=303\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DEMCO Butterfly valve - DEZHOU L&amp;A PETROLEUM MACHINERY CO.,LTD\" \/>\n<meta property=\"og:description\" content=\"DEMCO Butterfly valve\u00a0is a type of flow control device, used to regulate a fluid flowing through a section of pipe.\u00a0The valve\u00a0is similar in operation to a ball\u00a0valve. A flat circular plate is positioned in the center of the pipe. The plate has a rod through it connected to a handle on the outside of the valve.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/laproducts.cn\/en\/?p=303\" \/>\n<meta property=\"og:site_name\" content=\"DEZHOU L&amp;A PETROLEUM MACHINERY CO.,LTD\" \/>\n<meta property=\"article:published_time\" content=\"2021-04-09T06:15:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-12-06T05:57:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55909e5a58763-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"300\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/laproducts.cn\/en\/?p=303#article\",\"isPartOf\":{\"@id\":\"https:\/\/laproducts.cn\/en\/?p=303\"},\"author\":{\"name\":\"admin\",\"@id\":\"http:\/\/laproducts.cn\/en\/#\/schema\/person\/9a7d286dd7479db47ebbe29a965726a2\"},\"headline\":\"DEMCO Butterfly valve\",\"datePublished\":\"2021-04-09T06:15:58+00:00\",\"dateModified\":\"2021-12-06T05:57:30+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/laproducts.cn\/en\/?p=303\"},\"wordCount\":123,\"publisher\":{\"@id\":\"http:\/\/laproducts.cn\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/laproducts.cn\/en\/?p=303#primaryimage\"},\"thumbnailUrl\":\"http:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55909e5a58763-1.jpg\",\"articleSection\":[\"VALVE\"],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/laproducts.cn\/en\/?p=303\",\"url\":\"https:\/\/laproducts.cn\/en\/?p=303\",\"name\":\"DEMCO Butterfly valve - DEZHOU L&amp;A PETROLEUM MACHINERY CO.,LTD\",\"isPartOf\":{\"@id\":\"http:\/\/laproducts.cn\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/laproducts.cn\/en\/?p=303#primaryimage\"},\"image\":{\"@id\":\"https:\/\/laproducts.cn\/en\/?p=303#primaryimage\"},\"thumbnailUrl\":\"http:\/\/laproducts.cn\/en\/wp-content\/uploads\/2021\/04\/55909e5a58763-1.jpg\",\"datePublished\":\"2021-04-09T06:15:58+00:00\",\"dateModified\":\"2021-12-06T05:57:30+00:00\",\"description\":\"DEMCO Butterfly valve\u00a0is a type of flow control device, used to regulate a fluid flowing through a section of pipe.\u00a0The valve\u00a0is similar in operation to a ball\u00a0valve. 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