Dual valve fitting for enabling quick measurement of pressure

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 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 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 retainer that defines in a top end thereof a recess that retains a check seal element therein for seating against an inner annular valve seat formed within said flow passage;
• (e) a second means for biasing said retainer so that said check seal element therein seats against said inner annular valve seat thereby rendering said second valve normally closed;
• and
• (f) a bottom end of said valve stem being separated a dead space apart from a top side of said check seal element;
• such that mating such female coupler with said protuberant end causes movement of said valve stem with said poppet head thereof unseating from said outer annular valve seat and said bottom end thereof moving through said dead space and pushing to unseat said check seal element thereby enabling flow from such housing through said flow passage into such female coupler.