valveman阀门操作者valven.瓣膜；真空管；阀门；电子管valve rocker arm气阀摇杆,气阀摇臂valve core curve阀芯曲线valve resistance阀流阻力valve lock clamp气门锁夹valve strictness阀门严密性valve compressor气门式压气机valve commissure瓣膜交界valve of aerosol气雾剂的阀门valve regulating阀门调节valveless filter无阀真空过滤机

1. Slide the diaphragm assembly into the relief valve seat.
   将隔膜总成滑进到安全阀阀座内。
2. All valve seats and seat discs shall be replaceable.
   所有阀门阀座和阀座阀瓣应该是可更换的。