Differential pressure overflow valve

Details Differential pressure overflow valve Differential pressure overflow valve

1976-06-07

1978-10-31

Cline, William R.

Fluid handling

With indicator, register, recorder, alarm or inspection means

Fluid pressure responsive indicator, recorder or alarm

73205R, 210;95, F16K 3700

Patent

active

041228634

ABSTRACT:
A differential pressure overflow valve has a housing with a differential pressure indicator therein consisting of a cylinder containing a piston moving against the force of a spring; the piston is spaced from said cylinder to provide an annular gap. The housing also has an inlet and an outlet pressure chamber; the inlet pressure chamber is connected by a passage to one end of the cylinder and the outlet chamber by another passage to the other end of the cylinder. To provide a choke effect the cross sectional area of the annular gap is substantially smaller than the cross sectional area of the connecting passages.

REFERENCES:
patent: 1215129 (1917-02-01), Edlich
patent: 1649602 (1927-11-01), Ledoux et al.
patent: 2661847 (1953-12-01), Buettner
patent: 3472275 (1969-10-01), Castro et al.
patent: 3474906 (1969-10-01), Tennis
patent: 3575197 (1971-04-01), Ray
patent: 3603148 (1971-09-01), Rikuta
patent: 3768510 (1973-10-01), Reves
patent: 3785333 (1974-01-01), Warncke et al.

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