Gas safety valve
Gas tank to pressure regulator coupling
Gate valve
Gate valve with internal pressure relief means
Heat releasable weldment for manual opening jacks and method of
Heat responsive back seat arrangement for valve operator
Heat responsive back seat arrangement for valve operator with fu
Heat responsive back seat arrangement for valve operator with ma
Heat responsive backseat for gate valves
Heat sensitive fire safe valve energy assist device
Heat sensitive gate valve
Heat sensitive shaft locking apparatus and valve using same
Heat sensitive valve
Heat-sensitive cut-off for gas conduits and the like, and method
High temperature ball valve
Hydrocarbon monitoring valve
Interrupter having an anti-fire valve member for a gas meter, an
Leakage free relief valve or fuse plug for protecting pressurize
Lubricated valve
Mechanical override for a valve actuator