Apparatus for controlling hydraulic flow of liquid under pressur

Details Apparatus for controlling hydraulic flow of liquid under pressur Apparatus for controlling hydraulic flow of liquid under pressur

1983-12-05

1986-06-24

Weakley, Harold W.

Fluid handling

Destructible or deformable element controlled

Destructible element

1375122, 1375133, 1374933, F16K 1714

Patent

active

045962634

ABSTRACT:
The present invention provides a dual valve apparatus for controlling hydraulic flow of liquid under pressure in a pipeline and which closes off the flow of liquid in a manner which minimizes surge pressure in the pipeline. The dual valve apparatus comprises a check valve of the swing-flap type with a pressure relief valve mounted in the check valve member.

REFERENCES:
patent: 1036479 (1912-08-01), Flamm
patent: 2578590 (1951-12-01), Perrault
patent: 4127142 (1975-11-01), Snider

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