Patent ID: 6029700
Filing Date: 2000-02-29
Classification: B60T,F16L,Y10S,Y10T

Abstract:
A dual valve fitting for enabling quick measurement of pressure contained within a housing, said fitting comprising:(a) a valve body defining a flow passage therethrough from a protuberant end of said valve body to a threaded end of said valve body, said protuberant end being shaped to mate with a female coupler of a quick connect device, said threaded end for screwing into a threaded bore of such housing;(b) a first valve situated in an upper section of said flow passage, said first valve including a poppet type head at a top end of a valve stem for seating against an outer annular valve seat formed within said flow passage at said protuberant end thereof;(c) a first means for biasing said poppet type head against said outer annular valve seat so that said first valve is normally closed;(d) a second valve situated in a lower section of said flow passage, said second valve including (A) a seat piece having (i) an outer periphery that carries an o-ring by which said seat piece sealingly secures within said flow passage adjacent to said first means for biasing, (ii) an inner bore defined therethrough and (iii) an inner annular valve seat formed at a bottom end thereof and (B) a valve retainer having (i) a top extendable through said inner bore to a point a dead space apart from a bottom end of said valve stem and (ii) a bottom end carrying thereabout an annular check type valve that is seatable against said inner annular valve seat; and(e) a second means for biasing said valve retainer so that said check type valve seats against said inner annular valve seat thereby rendering said second valve normally closed; such that mating such female coupler with said protuberant end causes inward movement of said valve stem with said poppet type head thereof unseating from said outer annular valve seat and said bottom end thereof moving through said dead space and pushing against said top end of said valve retainer to unseat said check type valve thereby enabling flow from such housing through said flow passage into such female coupler.