Patent ID: 6070854
Filing Date: 2000-06-06
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 said housing;(b) a valve retainer situated in said flow passage, said valve retainer defining a pair of annular recesses therearound separated a predetermined distance apart along said valve retainer;(c) a first sealing ring retained in a first of said pair of annular recesses for seating against an outer annular valve seat formed in said flow passage as a first valve of said fitting;(d) a second sealing ring retained in a second of said pair of annular of recesses for seating against an inner annular valve seat formed in said flow passage as a second valve of said fitting; and(e) a means for biasing said valve retainer so that said first and said second sealing rings seat against said outer and said inner annular valve seats, respectively, thereby rendering said first and said second valves normally closed; such that (I) coupling said female coupler to said protuberant end of said fitting causes said valve retainer to move inwardly against said means for biasing so as to open first said first valve then said second valve thereby allowing flow from said housing through said flow passage and into said female coupler and (II) uncoupling said female coupler from said protuberant end of said fitting causes said means for biasing to move said valve retainer outwardly so as to close first said second valve then said first valve thereby preventing flow from said housing via said fitting to said female coupler.