供应山东北泽H42W-25立式止回阀一、H42立式止回阀概述本系列阀门正常处于关闭状态，由于管线中进口端介质的压力作用，而克服弹簧阻力使阀门开启。当进口端介质压力低于出口端时，弹簧将阀芯推向阀座而使阀门关闭，阻止介质逆流，故起止回作用。本阀门由于采用弹簧支撑阀芯，故采用立式安装或卧式装均可。二、H42立式止回阀应用规范设计与制造GB/T12235连接端尺寸结构长度GB/T12221法兰尺寸JB/T79检验与试验JB/T9092材料碳钢GB/T12229不锈钢GB/T12230合金钢Q/ZB66标志GB/T12220供货JB/T7928三、H42立式止回阀性能范围型号公称压力试验压力工作温度(℃)强度(水)Mpa密封(水)空气(Mpa)低压密封(空气)MpaH42W-161.62.41.80.6≤200H42W-252.53.82.80.6≤200H42W-404.06.04.40.6≤200四、H42立式止回阀主要连接尺寸和外型尺寸型号公称通径DN尺寸(mm)LDD1D2HbZ-ΦdH42W-16)1513095654577144-1420150105755577144-1425160115856580164-14321801351007885164-18402001451108595164-1850230160125100105164-1865290180145120120184-1880310195160135130208-18100350215180155140208-18125400245210185155228-18150480280240210180248-232006003352952652152612-23H42W-251513095654577164-1420150105755580164-1425160115856585164-14321801351007895188-184020014511085105188-1850230160125100120208-18652901801451201302128-1880310195160135140228-18100350230190160155248-23125400270220188180288-25150480300250218215308-252006003603102789733412-25)