Multi-position relief valve

Details Multi-position relief valve Multi-position relief valve

1983-11-09

1985-10-08

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137540, 267166, F16K 1706

Patent

active

045454051

ABSTRACT:
A multi-position pressure relief valve settable to operate at different pressure limits includes an adjustment rod, a valve bias spring and a valve member extending coaxially with one another, the axial spacing between the rod and the valve member determining the pressure limit for the valve. The rod carries a pin adapted to engage a stepped surface of a limit select member, the steps defining a plurality of stop positions for the rod, and each stop position corresponding to a different pressure limit setting. A control knob attached to the rod enables the rod to be manipulated to locate the pin in the stop position corresponding to the pressure limit desired.

REFERENCES:
patent: 1288821 (1918-12-01), Broderick
patent: 1294369 (1919-02-01), Banks
patent: 1759796 (1930-05-01), Miles
patent: 2954792 (1960-10-01), Hagger
patent: 3013790 (1961-12-01), Anderson
patent: 3451421 (1969-06-01), Vicenzi

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