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US4250913A
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Pilot mechanism for pressure regulating valve
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US4248403A
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Plug assembly for movable plug valves
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US4102297A
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Acoustical signal apparatus
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GB1509204A
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Self-cleaning heat exchanger circuit
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US3856049A
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Multiple stage restrictor
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CA963355A
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Multiple stage restrictor
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US3791413A
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Pressure reducing valve spool
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US3642021A
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Blending valve
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US3670807A
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Storage type hot water heating system
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US3566902A
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Fluid flow system
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US3353530A
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Hot water supply system
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US3347268A
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Yielding safety connector and antivibration lock for blending valve
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US3232336A
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Blending hot water heater
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US3086548A
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Self-regulating pitot for regulator valves
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GB921178A
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Improvements in throttling valves
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US3137474A
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Shut-down device for pump pressure regulator
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US3009678A
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Self-centering and self-aligning valve disc
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US2989982A
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Pressure reducing valve
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US2988105A
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Throttling valve
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US2917268A
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Pilot control regulator
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