Gas flow control regulator

Details Gas flow control regulator Gas flow control regulator

1993-08-02

1994-05-03

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

1371165, 13750525, G05D 1610

Patent

active

053078349

ABSTRACT:
In a combined gas flow control regulator and pressure relief valve, the pressure relief valve includes a pressure relief member comprising a flange and a sleeve which is sealingly engaged with the piston rod of the gas flow control regulator and is slidable relative to the piston rod. A spring urges the flange of the pressure relief member into contact with the piston head of the gas flow control regulator thereby closing a gas relief aperture in the piston head capable of connecting a first chamber, which is one chamber of the gas flow control regulator to a second chamber which is a gas relief chamber from which gas can escape to atmosphere. The pressure relief member moves as one with the piston of the gas flow control regulator in normal operation of the gas flow control regulator, and the pressure relief member moves away from the piston head against the action of the spring, independently of the motion of the piston, when excess pressure builds up within the regulator body, to allow this excess pressure to be vented to atmosphere through the second chamber.

REFERENCES:
patent: 3848631 (1974-11-01), Fallon
patent: 4020863 (1977-05-01), Fabish
patent: 4655246 (1987-04-01), Phlipot et al.

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