P:	17kg/cm2(Mh7u), 62 bar (Mh7b).
T:	-20oC~230oC
V:	25m/s
D:	14mm~100mm (0.500"~6.000")
Materials:
Head:	Carbon, SiC, TC.
Seat:	Carbon, SiC, TC.
:Wedge Ring :	PTFE.