止回阀球 meaning in English

check-valve ball
pump check valve ball

Buyers and sellers of surplus pipe , valves , fittings , flanges , forged steel fittings , and instrumentation fittings
-制造闸阀截止阀止回阀球阀旋塞阀波纹管截止阀柱塞阀过滤器等高温高压阀门。
Manufacturers of instrument , piping , flow control and aerosapce components . part of swagelok company . based in the uk
-主要产品有闸阀截止阀止回阀球阀蝶阀低温阀平板闸阀隔膜阀电站阀和仪表阀。
Our reputation for designing and manufacturing valves in nationalclass is logical outcome of our commitment to deliver unfailing reliability through consistent performance , service , and value in everything we do
生产的阀门种类有闸阀截止阀止回阀球阀旋塞阀蝶阀水力控制阀高温高压阀门等，并可根据用户特殊要求冶炼和制造。