Y43H蒸气减压阀构造特色和用途本系列减压阀属于先导活塞式减压阀。由主阀和导阀两部门组成。主阀主要由阀座、主阀盘、活塞、弹簧等零件组成。导阀主要由阀座、阀瓣、膜片、弹簧、调理弹簧等零件构成。本产品在通俗减压阀基本上作了很大改良，加年夜了活塞面积，改变了撙节结构。转变了密封情势，加大了过流面积等等，从而在进步敏锐度、流量、寿命等方面大大改良了机能。本产物重要用于蒸汽管路，实用于流量大流量变更大，出口压力变化大得蒸汽管路。公称压力(Mpa)1.62.54.06.410.016.0壳体试验压力(Mpa)*2.43.756.09.615.024密封实验压力(Mpa)1.62.54.06.410.016.0高出口压力(Mpa)1.62.54.06.410.016.0出口压力规模(Mpa)0.04-1.00.05-1.60.08-2.50.2-3.50.5-3.50.5-4.5压力特征误差(Mpa)△P2PGB12246-1989流量特性偏差(Mpa)P2GGB12246-1989小压差(Mpa)0.070.10.150.40.50.8渗漏量GB12245-1989*：壳体试验不包含膜片、顶盖Y43H蒸气减压阀主要零件资料零件称号零件材料阀体阀盖底盖WCB阀座阀瓣2Cr13缸套活塞铝乌青铜膜片1Cr18Ni9活塞环合金铸铁/对位聚苯导阀座导阀杆2Cr13主阀弹簧50CrVA导阀主弹簧50CrVA调理弹簧60Si2MnY43H蒸气减压阀流量系数(Cv)DN506580125150200250300350400500Cv12.546.5916253664140250Y43H蒸气减压阀外形尺寸(PN1.6-4.0)单元：mm公称通径DN外形尺寸LHHl1.6/2.5MPa4.0MPa1516018026585201601802658525180200280953220022028095402202402901055025027030013065280300315145803103303301703503804052001254004504502251504505004852652005005505702902506506403253008007403603508508103954009009504305009501080500Y43H蒸气减压阀外形尺寸(PN6.4-16.0单位：mm公称通径DN外形尺寸LHHl6.4MPa10.0/16.0MPa151801802802018020028025200220300115322202303001154024024031513050270300340135653003403551508033036037017538045020512545051023515050055527520055064030025065072033530080083037535085088041040090010204455009501080515