{"id":1508,"date":"2026-01-29T17:25:39","date_gmt":"2026-01-29T09:25:39","guid":{"rendered":"http:\/\/zjjafm.ceshi24.7-mi.net\/?p=1508"},"modified":"2026-01-29T17:28:43","modified_gmt":"2026-01-29T09:28:43","slug":"%e6%94%be%e6%96%99%e9%98%80%e7%9a%84%e7%bb%93%e6%9e%84%e7%89%b9%e7%82%b9-2","status":"publish","type":"post","link":"https:\/\/www.jinaovalve.com\/?p=1508","title":{"rendered":"The structural characteristics of the discharge valve"},"content":{"rendered":"\n<p>A discharge valve is a valve with a circular disc as the closing part, which rotates around the valve stem to open, close, and regulate the flow passage. The disc of the discharge valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the valve body, the disc-shaped disc rotates around the axis, with the rotation angle between 0\u00b0 and 90\u00b0, and the valve plate is fully open when it is rotated to 90\u00b0.<\/p>\n\n\n\n<p>The development history of the discharge valve:<\/p>\n\n\n\n<p>The discharge valve was invented in the United States in the 1930s. It was introduced into Japan in the 1950s, widely used in Japan in the 1960s, and promoted in our country after the 1970s. At present, the discharge valve with a diameter of more than 300mm has gradually replaced the gate valve in the world. Compared with the gate valve, this practical new type has the advantages of short starting and closing time, small operating torque, small installation space and light weight. Take DN 1000 as an example, the discharge valve is about 2T, the gate valve is about 3.5t, and it is easy to combine with various driving devices, and has good durability and reliability.<\/p>\n\n\n\n<p>The disadvantage of rubber soft-sealed relief valves is that cavitation can occur when used as a throttle valve, causing the rubber valve seat to peel and damage due to improper use. In recent years, China has also developed metal hard-sealed relief valves, and in recent years, Japan has developed anti-cavitation, low-vibration, low-noise comb-shaped relief valves.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"1024\" src=\"https:\/\/www.jinaovalve.com\/wp-content\/uploads\/2025\/10\/1-576x1024.jpg\" alt=\"\" class=\"wp-image-1395\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>A discharge valve is a valve with a circular disc as th [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1396,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[20],"tags":[],"class_list":["post-1508","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category--en"],"_links":{"self":[{"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/posts\/1508","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1508"}],"version-history":[{"count":2,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/posts\/1508\/revisions"}],"predecessor-version":[{"id":1511,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/posts\/1508\/revisions\/1511"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/media\/1396"}],"wp:attachment":[{"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}