1.0Fivalcohttps://www.fivalco.com/cnfivalcoadminhttps://www.fivalco.com/cn/author/fivalcoadmin/rich600338<blockquote class="wp-embedded-content" data-secret="FMCYZa2PXH"><a href="https://www.fivalco.com/cn/product/wafer-butterfly-valve/">对夹蝶阀</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.fivalco.com/cn/product/wafer-butterfly-valve/embed/#?secret=FMCYZa2PXH" width="600" height="338" title="《对夹蝶阀》—Fivalco" data-secret="FMCYZa2PXH" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(d,l){"use strict";var e=!1,o=!1;if(l.querySelector)if(d.addEventListener)e=!0;if(d.wp=d.wp||{},!d.wp.receiveEmbedMessage)if(d.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!/[^a-zA-Z0-9]/.test(t.secret)){for(var r,a,i,s=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),c=0;c<n.length;c++)n[c].style.display="none";for(c=0;c<s.length;c++)if(r=s[c],e.source===r.contentWindow){if(r.removeAttribute("style"),"height"===t.message){if(1e3<(i=parseInt(t.value,10)))i=1e3;else if(~~i<200)i=200;r.height=i}if("link"===t.message)if(a=l.createElement("a"),i=l.createElement("a"),a.href=r.getAttribute("src"),i.href=t.value,o.test(i.protocol))if(i.host===a.host)if(l.activeElement===r)d.top.location.href=t.value}}},e)d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",t,!1),d.addEventListener("load",t,!1);function t(){if(!o){o=!0;for(var e,t,r,a=-1!==navigator.appVersion.indexOf("MSIE 10"),i=!!navigator.userAgent.match(/Trident.*rv:11\./),s=l.querySelectorAll("iframe.wp-embedded-content"),n=0;n<s.length;n++){if(!(r=(t=s[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(a||i)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> https://www.fivalco.com/cn/wp-content/uploads/sites/2/2020/10/F11.jpg700700PN16 / PN25 Fig No.: F11 FEATURES & SPECIFICATIONS Higher strength for disc with pinned single shaft ensure optimal alignment Centrally mounted disc and hydrodynamic design minimize pressure loss Can be installed at horizontal or vertical pipe line Phenolic backed rubber seat is non-collapsible, stretch resistant and easily replaceable Excellent flow characteristic with flow in either direction Design conforms to BS EN 593 / BS 5155 / MSS SP-67 / API 609 Precision machining of disc for low operating torque No gasket needed for installation