Heat sensitive valve
Heat-sensitive cut-off for gas conduits and the like, and...
Heated fluid control valves
Heated roof drain
Heater control valve
Heating system pressure control mechanism
Heating systems for steam flow control valves
Hermetic solenoid operated valve structure and method of...
Hermetic-seal valve for a thermal-regeneration plant for...
Hermetically sealed ball type valve
Hermetically sealed valve with fixed diffuser
High aspect ratio threadform
High differential pressure control valve
High elongation volded elastomeric bushings and method and...
High energy loss device
High energy loss vortex fluid control device
High force-gain valve
High gain fluid control valve assembly
High or low pressure cut off valve
High overpressure vent structure having spring steel...