Set pressure verification device and method

Details Set pressure verification device and method Set pressure verification device and method

1987-02-27

1988-08-09

Levy, Stewart J.

Measuring and testing

Blower, pump, and hydraulic equipment

G01M 1900

Patent

active

047619996

ABSTRACT:
Test apparatus is provided for measuring the set pressure of a valve coupled to a port in a pressure line. The valve includes a closure element movable between a first limit position sealing the port and a second limit position opening the port. Spring loaded element is provided for biasing the closure element towards said first limit position. An expandable diaphragm device is provided which, upon the introduction of air pressure into an airtight chamber defined by a movable piston, the diaphragm and a base element, is adapted to apply a force ramp to the closure element in a direction opposite to the direction of the bias provided by the spring loaded element. There is also provided an element for calculating the set pressure of said valve.

REFERENCES:
patent: 2419293 (1947-04-01), Simonson
patent: 2952151 (1960-09-01), Simonson et al.
patent: 4349885 (1982-09-01), Thompson
patent: 4428223 (1984-01-01), Trevisan
patent: 4557136 (1985-12-01), Greenhalf
patent: 4565209 (1986-01-01), Ruchser et al.

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