Dual seal coupling

Details Dual seal coupling Dual seal coupling

1991-07-05

1992-06-23

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

137614, 13761403, F16L 3728

Patent

active

051234467

ABSTRACT:
A sealing system for high pressure fluid couplings wherein male and female valved coupling parts are interconnected while under fluid pressure, the sealing system including a pair of diverse characteristic seal rings axially spaced in the direction of relative coupling part movement. The seal ring closest to the pressurized medium is semi-rigid to prevent blow-out from its recess during coupling disconnection and interconnection while the second seal ring is of greater elasticity and sealability to prevent leakage. The axial spacing between the seal rings permits adequate internal support for the second seal prior to the opening of the coupling parts' valves.

REFERENCES:
patent: 3039794 (1962-06-01), DeCenzo
patent: 4219048 (1980-08-01), Ekman
patent: 4240466 (1980-12-01), Herzan et al.
patent: 4327770 (1982-05-01), Brown et al.
patent: 4982761 (1991-01-01), Kreczko et al.

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