弹簧活塞式减压阀主要技术参数和性能指标公称压力(Mpa)1.01.62.5壳体试验压力(Mpa)*1.52.43.75密封试验压力(Mpa)1.01.62.5最高进口压力(Mpa)1.01.62.5出口压力范围(Mpa)0.2-0.80.2-1.00.4-1.6压力特性偏差(Mpa)△P2PGB12244-1989流量特性偏差(Mpa)P2GGB12244-1989渗漏量0工作温度0℃-80℃壳体试验不包括膜片、顶盖弹簧活塞式减压阀主要零件材料零件名称零件材料阀体阀盖底盖WCB阀座2Cr13阀瓣2Cr13阀杆2Cr13缸套2Cr13/25(镀硬铬)活塞2Cr13O型圈丁腈橡胶密封圈丁腈橡胶膜片夹织物丁腈橡胶调节弹簧60Si2Mn弹簧活塞式减压阀流量系数(Cv)DN1520253240506580100125150200250300350400500Cv12.546.591625366410014025040057078010201500弹簧活塞式减压阀外形尺寸(PN1.6-4.0)公称通径DN外形尺寸LHHl1516022590201602659825180265110322002651104022032012550250320125652803251308031038516010035038517012540043020015045043021020050056024025065069029030080080033535085088037540090098040545090011004555009501130465