Gas bleed cock

Details Gas bleed cock Gas bleed cock

1981-10-23

1984-06-19

Michalsky, Gerald A.

Fluid handling

Systems

Dividing into parallel flow paths with recombining

55158, 55312, 250288, 250289, 251117, 13762547, G01N 124

Patent

active

044548940

ABSTRACT:
A cock for low-pressure bleeding of a gas from a gaseous mixture, said cock having a body (1) with an inlet (12) and a pumping outlet (13) for the mixture and a bleed outlet orifice (15), and a valve (2) which co-operates with the valve body and is situated between said orifice and the inlet, wherein the valve includes a semi-permeable membrane with a first surface (6A) which communicates with said inlet and a second surface (6) which communicates with said bleed orifice, the valve assuming a first position in which it allows the mixture to pass directly from the inlet towards the bleed orifice when the pressure of the mixture is lower than a given pressure, and a second position in which it closes the bleed orifice when the pressure of the mixture is higher than said given pressure, the gas to be bled off then passing through said permeable membrane.

REFERENCES:
patent: 136746 (1873-03-01), McMahon
patent: 3227872 (1966-01-01), Nemeth
patent: 3421292 (1969-01-01), Llewellyn
patent: 3500040 (1970-03-01), Padrta
patent: 3867631 (1975-02-01), Briggs et al.
patent: 4341224 (1982-07-01), Stevens

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