F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 37/40 (2006.01) B60T 17/04 (2006.01) B60T 17/22 (2006.01) F16L 37/28 (2006.01) G01L 19/00 (2006.01)
Patent
CA 2233184
A dual valve fitting enables quick measurement of pressure contained within a housing. The fitting includes a valve body, a valve retainer, first and second sealing rings and a biasing mechanism. The valve body defines a flow passage within which is situated the valve retainer. The valve body is designed at its protuberant end to mate with a female coupler of a quick connect device and at its threaded end to screw into a threaded bore of the housing. The valve retainer defines around itself first and second annular recesses each of which spaced apart from the other to match the spacing of outer and inner annular valve seats formed in the flow passage. Forming a first valve, the first sealing ring retains in the first annular recess so as to be seatable against the outer valve seat. Forming a second valve, the second sealing ring retains in the second annular recess so as to be seatable against the inner valve seat. The valve retainer is biased within the flow passage so that the first and second sealing rings seat against the outer and inner valve seats, respectively, thereby rendering the first and second valves normally closed. Mating the female coupler to the protuberant end of the fitting causes the valve retainer to move inwardly against the biasing mechanism so as to open both the first and second valves thereby allowing flow from the housing through the flow passage and into the female coupler.
Carroll John B.
Dimsa Robert D.
Johnston Gregory L.
Li Wei
Scott Daniel G.
Macrae & Co.
Westinghouse Air Brake Company
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