Pressure relief valve

Details Pressure relief valve Pressure relief valve

1977-11-18

1979-09-25

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

137557, 13761419, F16K 1506, F16K 3700

Patent

active

041687230

ABSTRACT:
A pressure relief valve for attachment to a tank, such as used on an electrical transformer, which valve will release excessive gas pressure developed in the tank because of transformer malfunction. The valve has a cap which uncovers a signal indicating portion of the valve when the valve is unseated during a pressure release operation. The cap remains in signal uncovered position, after the valve resets, to warn maintenance personnel that the tank has had an excessive pressure condition.

REFERENCES:
patent: 3702141 (1972-11-01), Wetterhorn
patent: 3844310 (1974-10-01), Brindisi
patent: 3952691 (1976-04-01), Peltz et al.

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