Adjustable relief valve

Details Adjustable relief valve Adjustable relief valve

1976-04-12

1977-09-20

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

13754317, 251337, F16K 1502

Patent

active

040490173

ABSTRACT:
An improved relief valve, particularly suited for interior use in refrigeration systems. The valve includes a valve body having an inlet, an outlet, and a passageway therebetween with a valve seat positioned in the passageway. Inside of the passageway are mounted an adjustable valve spring retainer, a coil valve spring, a valve piston including a fluorocarbon sealing surface thereon, and a bearing means mounted between one end of the valve spring and either the retainer or valve piston. The spring retainer is adjusted by turning in its threaded mounting. The bearing means prevents the turning moment applied to the retainer from extending to the valve piston. Any rotational relation between the piston sealing surface and seat which would be deleterious to the sealing engagement is eliminated.

REFERENCES:
patent: 2254209 (1941-09-01), Buttner et al.
patent: 2568026 (1951-09-01), Pigott
patent: 2642892 (1953-06-01), Simons
patent: 3025874 (1962-03-01), Yocum
patent: 3105517 (1963-10-01), Alfieri
patent: 3406912 (1968-10-01), Claffey

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