Valve with means for preventing accidental disassembly

Claim 1

IN A VALVE THE COMBINATION OF A VALVE BODY HAVING SPACED INLET AND OUTLET PORTS AND A SEAT, AN INTEGRAL OUTWARDLY EXTENDING HOLLOW FLANGE ON SAID BODY, THE HOLLOW FLANGE HAVING BOTH AN INTERNAL POLYGONAL SURFACE AND AN EXTERNAL THREADED SURFACE, A VALVE STEM GUIDE MOUNTED IN SAID HOLLOW FLANGE AND HAVING AN EXTERNAL POLYGONAL SURFACE FOR REGISTRY WITH THE INTERNAL SURFACE OF THE HOLLOW FLANGE, SAID GUIDE HAVING A THREADED APERTURE THERETHROUGH AND A RESTRICTED TERMINAL PORTION AROUND ONE END AND CONCENTRIC WITH THE APERTURE, A VALVE STEM ALIGNED WITH SAID SEAT AND HAVING A POINT AT ONE END FOR ENGAGING THE VALVE SEAT AND HAVING A THREADED PORTION INTERMEDIATE ITS ENDS FOR ENGAGEMENT WITH THREADED APERTURE OF THE GUIDE, A RETAINER THREADEDLY MOUNTED ON SAID HOLLOW FLANGE FOR NORMALLY ENGAGING AND RESTRAINING THE STEM GUIDE AGAINST MOVEMENT ALONG THE VALVE STEM WHEREBY ROTATION OF THE VALVE STEM WITHIN SAID THREADED APERTURE MOVES THE VALVE POINT TOWARD OR AWAY FROM THE VALVE SEAT, AND SAID RESTRICTED TERMINAL PORTION AND THE POLYGONAL SURFACES ON THE GUIDE AND THE HOLLOW FLANGE COOPERATING TO PREVENT ROTATION OF THE VALVE STEM AND THE RETAINER WHEN THE STEM THREADED ABUT THE RESTRICTED TERMINAL PORTION OF THE GUIDE.