Fluids rate of flow saving or limiting device

Details Fluids rate of flow saving or limiting device Fluids rate of flow saving or limiting device

1990-08-20

1991-06-11

Nilson, Robert G.

Pipes and tubular conduits

With flow regulators and/or baffles

Restrictors

137504, G05D 701

Patent

active

050224387

ABSTRACT:
The dislodgement of the soft washer of a fluids rate of flow saving or limiting device comprising a fluid pressure actuated needle type shutter and a flow restricting washer assembly through which said shutter passes to obstruct the free flow of the fluid depending on the pressure thereof and inlcuding a soft washer sandwiched between two hard washers is prevented by enclosing said soft washer within a housing having a circular bottom provided with an opening of a predetermined diameter larger than the diameter of said shutter, a cylindrical wall extending upwardly along the periphery of said bottom to a distance sufficient to constitute a cavity for receiving said soft washer, and a lid to cover the housing and having an opening of the same diameter as said bottom, said lid being arranged with respect to said cylindrical wall so as to sandwich said soft washer between said lid and said bottom, said soft washer having an opening of a diameter smaller than the diameter of the openings in said lid and said bottom and being fixed within said housing to avoid dislodgement thereof by high fluid pressures.

REFERENCES:
patent: 780986 (1905-01-01), Francis
patent: 3503417 (1970-03-01), Toda
patent: 3805824 (1974-04-01), Robbins
patent: 4075294 (1978-02-01), Saito
patent: 4650094 (1987-03-01), Werding
patent: 4962792 (1990-10-01), Chaul

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