Pressure regulator

Details Pressure regulator Pressure regulator

1983-02-25

1985-04-30

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

137492, F16K 31385

Patent

active

045137757

ABSTRACT:
A pressure regulator assembly, suitable for controlling the flow of compressed natural gas to fuel an internal combustion engine, has a small primary valve positioned by a regulator diaphragm to control the flow at high supply pressures and a large secondary valve to provide additional flow area at low supply pressures. Flow to the primary valve passes through a chamber having a restricted aperture from the inlet, and a control diaphragm responsive to the pressure in the chamber opens the secondary valve when the primary valve reaches its maximum flow capacity and the pressure in the chamber approaches the regulated pressure.

REFERENCES:
patent: 474244 (1892-05-01), Hanson
patent: 1091536 (1914-03-01), Ross
patent: 2839077 (1958-06-01), Kristensson
patent: 2946344 (1960-07-01), Mott

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