english 
L-pattern three way
T-pattern three way
Safety valve
Internal screw non risk stem type gate valve
window shades; Gate shutter
Louver damper
Swing gate piston pump
Insulated Steam Jacket Type
Alarm valve
Alarm valve; Signal valve; Pulse valve sentinel valve
Back pressure regulating valve
Rate of back pressure
Body stem seal
Bellows valves
Bellow sealed valve
Bellows seal type
Bellows seal balance safety valve
Bellows reducing valve
Bellows wear reducing valve
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