执行机构备品备件

Spares of Executive Unit

弹簧  膜盘  O型密封圈

spring, diaphragm, o-type seal ring

调节阀备品备件

Spares of Regulating Valve

阀芯  阀座  阀笼

valve core, valve seat, valve cage

A4 316Lmod 316L 2Cr13+Co HY89

1Cr18Ni9Ti 0Cr18Ni9 10MoWVNb+Co