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US3669406A
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Ball valve
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US3740833A
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Method and apparatus for providing a hard metal coating on confined areas of a metal part
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US3308513A
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Apparatus for coring bolt holes
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US3339888A
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Cryogenic globe valve with extended body
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US3202175A
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Nipple attachment to a valve body
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US3208470A
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Insulation for a cryogenic valve
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US3219055A
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Retractable spacer ring for valve seats
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US3165292A
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Removable nipple mounting for a ball valve
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US3077201A
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Seal seat construction for a ball valve
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US3049103A
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Pressure actuated valve control
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US3139285A
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Soft seated globe valve body construction
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US3114386A
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Manual latch to retract a packing assembly
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US3110470A
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Mounting means for a gate pack-off
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US3053498A
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Clutch hand wheel for a soft seat valve
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US3038499A
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Three-way balanced valve
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US3081062A
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Balance pressurized seal globe valve
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US3085784A
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Soft seat with metal insert for gate valves
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US3038693A
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Seat adjustment for ball valves with rotatable ring
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US3107546A
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Internal stop means for valves
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US3006210A
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Replaceable threaded sleeve for gate type valves
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