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 2427677
A dual valve fitting enables quick measurement of pressure contained within a housing and a dual valve fitting that includes first and second valve bodies. The first valve body defines a flow passage from a threaded end to a protuberant end which is shaped to mate with a female coupler of a quick connect device. A first valve in the flow passage features a poppet type head at a top end of a valve stem that is seatable against an outer annular valve seat formed in the flow passage. A first biasing mechanism compels the poppet type head against the outer annular valve seat so that the first valve is normally closed. The second valve body defines a flow bore from an upper threaded end to a lower threaded end which communicates with the flow passage of the first valve body. The upper threaded end connects with the treaded end of the first valve body whereas the lower threaded end is designed to screw into a threaded bore of a housing. Situated in the flow bore, a second valve features a retainer that defines in a top end a recess that retains a check type valve that is seatable against an inner annular valve seat formed in the flow bore. A second mechanism for biasing acts upon the retainer so that the check type valve therein seats against the inner annular valve seat thereby rendering the second valve normally closed. A stem extension is disposed between a bottom end of the valve stem and a top side of the check type valve. When mated to the protuberant end of the fitting, such female coupler causes translation of the valve stem, the stem extension and the retainer thereby opening both the first and second valves. This allows flow from such housing through the flow bore and the flow passage and into such 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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