Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1979-08-20
1981-05-05
Cline, William R.
Fluid handling
Line condition change responsive valves
Direct response valves
137542, 13754317, 13754319, 251337, F16K 1502
Patent
active
042652715
ABSTRACT:
A unique relief valve is provided for use with a fluid system and comprises a reducing bushing having a throughbore. The bushing is externally threaded for connection with a standard fluid connector and, similarly, is internally threaded around its throughbore for connection to a further fluid connector in the fluid system. A valve seat having a fluid passageway is secured to the bushing while a valve member cooperates with the valve seat and is movable between open positions and a closed position. In its closed position, the valve member closes the fluid passageway on the valve seat and thus prevents fluid flow through the reducing bushing while, conversely, with the valve member in its open positions, fluid communication is established through the reducing bushing throughbore. A helical spring abuts against the valve member at one end and, at its other end, against a spring seat and urges the valve member towards its closed position. The spring seat, moreover, is adjustable to thereby vary the compression of the spring and thus the pressure setting for the relief valve.
REFERENCES:
patent: 225801 (1880-03-01), Crosby
patent: 1250503 (1917-12-01), Ray
patent: 1890223 (1932-12-01), Kilzel
patent: 2969804 (1961-01-01), Tolkien
Fosdick Dale P.
Rosaen Borje O.
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