Patent ID: 6202673
Filing Date: 2001-03-20
Classification: F16L,Y10T

Abstract:
A valve self-piercing tap for use on plastic piping, said tap comprising:a valve body, said valve body extending substantially axially and having a valve seat located near an axial end of said valve body, said valve body further having at least one circumferential groove extending around an outer surface of said valve body, said groove having at least one leg directed both radially inwardly toward an inner surface of said valve body and axially toward said valve seat; anda housing being formed from plastic and having an inlet opening located on an end of said housing corresponding to said valve seat, said plastic being injection molded onto said outer surface of said valve body, said plastic filling said circumferential groove of said valve body, said plastic within said circumferential groove forming a seal which self adjusts as pressure acts to separate said housing and said valve body.