http://www.zk-v.com/ProductShow_192.html

J661W气动对焊截止阀 
    zui高工作温度:-29~+300℃ 
     
J661W气动对焊截止阀 适用介质:水.蒸汽.热油等 
 阀门功能特点：本阀门是一种（分双作用/单作用）双重的密封设计（波纹管+填料）若波纹管失效，阀杆填料也会避免泄露，保证阀杆的零泄露，提供无需维修条件，安装时必须注意阀门流向道标志（单作用流道方向高进低出，双作用流道方向低进高出） 
     工作原理 单作用（WZHBG型）气开型的气动波纹管切断阀，在工作状态电磁阀通电打开气源阀门开阀，即断电，电磁阀自动排气执行器内弹簧力作用自动关闭，与远距离的控制台（微机）配套使用，利用气源控制阀门的开启和关闭。 
     
     当事故发生时，阀门线圈瞬时断电，触发二位三通电磁阀快速排气并进入关闭状态。此时，即使撤区电源.气源,阀门仍处于关闭状态,不会重新自动打开 
     
     当工作人员处理事故时,必须是无气源压力,无电源的状态下进行维修,事故处理完工后,人工重新开启阀门,才会恢复供气,即通电通气 
     
     阀门采用先导式阀瓣,开启轻松灵活,即使压力达到1.6Ppa开启也十分轻松,当执行器给压时节,先导阀开启,当执行器卸压时本阀处动关闭,本阀采用止回阀原理,只能单向截断,安装时必须注意阀门流向道标志（本阀流道方向高进低出） 
     
     双作用（WZPQ型） 气开/气关式,利用电磁阀控制气源,气源进入上部阀门的关闭,气源进入下部阀门的开启,并与远距离的控制台配套利用电源控制阀门的开启和关闭 

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http://www.zk-v.com/CV3000qidongtiaojiefa/        CV3000气动调节阀

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