Pressure reducing valve

Details Pressure reducing valve Pressure reducing valve

1990-04-16

1991-07-23

Cohan, Alan

Fluid handling

Convertible

Reversible check

13750513, 137495, G05D 1610

Patent

active

050334999

ABSTRACT:
A pressure reducing valve (1) is mounted directly on a high pressure (300 bar) gas cylinder (23). and handwheel (20) is opened gas is available at outlet (4) at a maximum pressure of 200 bar. When a special filling adaptor (24) is inserted in the outlet (4) the cylinder can be refilled to its maximum pressure of 300 bar. The special filling adaptor (24) has a seal (25) which inhibits gas flow from a chamber (28) via a passage (22) to the surrounding atmosphere. This, in turn, inhibits a piston (8) moving downwardly to close the inlet (3) of the pressure reducing valve (1) as would be the case in normal service.

REFERENCES:
patent: 3211175 (1965-10-01), Replogle
patent: 3946756 (1976-03-01), Specht
patent: 4020863 (1977-03-01), Fabish
patent: 4226257 (1980-10-01), Trinkwalder
patent: 4844111 (1989-07-01), Pritchard

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