Valve operable solely under still water conditions, chiefly in f

Details Valve operable solely under still water conditions, chiefly in f Valve operable solely under still water conditions, chiefly in f

1974-09-03

1976-12-07

Nilson, Robert G.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

251160, 251175, 251192, F16K 520

Patent

active

039958272

ABSTRACT:
A valve shutter is fitted in a channel and is adapted to be shifted, between a valve-opening position and an intermediate position facing a seat provided in the valve body, through rotation around a transverse axis, while the channel is set under still water conditions. The actual fluidtight application of the valve shutter against its seat is ensured by the pressure of the upstream water when normal flow conditions are restored. This dual movement is possible due to the fact that the shutter supports or bearings are resiliently or pneumatically held in position with reference to the valve body.

REFERENCES:
patent: 2034216 (1936-03-01), Stout et al.
patent: 3158172 (1964-11-01), Giovannetti
patent: 3400907 (1968-09-01), Horn et al.

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