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Delaying control for hydraulic motors
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Piston operator for imparting rotary motion
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CA1062975A
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Piston operator for imparting rotary motion
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Dual cylinder operator for imparting rotary motion
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Trunnion type rotary valve of welded tube and plate construction
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Pipeline break shutoff control
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CA940395A
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Piston operator for imparting rotary motion
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Ball valve construction
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Method of fabricating ball valves
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Rotary valve of welded tube and plate construction and method of making
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Non-hammer poppet valve control
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Automatic shut-off for pipeline
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Ball valve construction
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Ball valve seat construction
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Piston valve construction
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Sealing construction for piston valve
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Vented resilient ring sealing construction
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Vessel and fluid propelling device
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Vessel and fluid propelling device
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Pipe line system and mechanism therefor
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