Gas safety device

Gas safety valve

Gas shut-off and pressure relief valve for a high pressure gas v

Gas supply mechanism with safety device

Gas tank to pressure regulator coupling

Gas-actuated valves

Gasket-lined rupture panel

Gate valve

Gate valve with internal pressure relief means

Heat exchanger pressure shutoff valve

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