Valve gauge mounting

Claim 1

A VALVE UNIT FOR APPLICATION TO A FLANGE OF A PIPE COMMUNICATING WITH A CONTAINER OF PRESSURIZED FLUID, SAID VALVE UNIT COMPRISING PLATE OF SUBSTANTIAL THICKNESS HAVING AN ENCIRCLING PERIPHERAL SURFACE AND HAVING FLAT OUTER AND INNER FACES, MEANS DEFINING A PLUG BORE IN THE PLATE EXTENDING TRANSVERSELY THERETHROUGH AND OPENING THROUGH SAID OUTER AND INNER FACES, A ROTARY PLUG MOUNTED IN SAID PLUG BORE AND HAVING A REDUCED OUTER END STEM PORTION PROJECTION BEYOND SAID OUTER FACE OF THE PLATE, SAID PLUG HAVING A MAIN BORE FORMED THEREIN OBLIQUE TO THE LONGITUDINAL AXIS OF THE PLUG AND HAVING AN INNER EAR OPENING THROUGH THE INNER END OF THE PLUG AND HAVING AN OUTER END OPENING THROUGH THE SIDE OF THE PLUG, A SECOND BORE IN THE PLUG EXTENDING TRANSVERSELY OF SAID AXIS AND OPENING THROUGH OPPOSITE SIDES OF THE PLUG, A PAIR OF OPPOSITELY EXTENDING BORES IN THE PLATE HAVING OPPOSITE OUTER ENDS OPENING THROUGH SAID PERIPHERAL SURFACE OF THE PLATE AND HAVING INNER ENDS OPENING INTO SAID PLUG BORE, THE ENDS OF SAID SECOND BORE AND SAID OUTER END OF THE MAIN BORE LYING IN A COMMON PLANE WITH SAID INNER ENDS OF SAID PAIR OF BORES, ONE OF SAID PAIR OF BORES FORMING A VENT, MEANS FOR COUPLING AN INSTRUMENT SUCH AS A GAUGE TO THE OUTER END OF THE OTHER ONE OF THE PAIR OF BORES, A HANDLE ATTACHED TO SAID PLUG STEM FOR TURNING THE PLUG, AND MEANS FOR SECURING SAID PLATE TO A PIPE FLANGE WITH SAID INNER FACE OF THE PLATE OPPOSING THE FACE OF THE FLANGE AND WITH THE PLUG BORE ALIGNED WITH THE PIPE.