Relief valve for fluids

Details Relief valve for fluids Relief valve for fluids

1975-12-19

1977-01-25

Cohan, Alan

Fluid handling

Larner-johnson type valves; i.e., telescoping internal valve...

137556, 251 31, F16K 31124

Patent

active

040046052

ABSTRACT:
A pressure-relief valve especially for use in dams and other hydraulic-turbine installations has a deflecting member that diverts an axially flowing stream outwardly at the discharge side of the valve. This valve has two fluid-operated servomotors, one responding to the water pressure in the system and the other to the pressure of a control fluid. These servomotors are hydraulic cylinders mounted on diametrically opposite hollow ribs inside the housing of the valve body and have pistons interconnected by a common piston rod. An indicating rod extends radially from this piston rod through one of the hollow ribs, and the feed lines for the two cylinders also extend out through these ribs.

REFERENCES:
patent: 3014493 (1961-12-01), Seger
patent: 3704856 (1972-12-01), Swiecicki
patent: 3824033 (1974-07-01), Chacour

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