In the representative embodiment of the invention disclosed herein, a disc valve is cooperatively arranged to include {HEAD ~ a disc member} of a ductile material which is transversely positioned within an enlarged chamber in the axial bore of a tubular housing and sealingly secured to {TAIL ~ the housing} 
is sealingly secured to
In the representative embodiment of the invention disclosed herein , a disc valve is cooperatively arranged to include { HEAD ~ a disc member } of a ductile material which is transversely positioned within an enlarged chamber in the axial bore of a tubular housing and sealingly secured to { TAIL ~ the housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL