Relief valve for use with hermetically sealed flexible container
Respirator valve
Reversing valve
Rotary plug valve
Rotary switching device provided with an axially displaceable co
Rotary valve having a fluid bearing
Rotary, segmented, expansible valves
Self sealing gate valve
Shut-off device in the form of a ball valve
Slide gate damper
Two piece double acting valve seat assembly
Valve and improved seat seal therefor
Valve for controlling a gas or liquid flow
Wedge-type gate valve
Wireline blowout preventer