阀体: WN 0.6025,WN 1.0619 or WN 1.4581
A126B, A216WCC or A351CF8M
上阀盖: C22.8, (WN 1.0460) or WN 1.4571
阀芯/阀座: WN 1.4006 or WN 1.4571
填料: V-ring packing PTFE with carbon,
Packing spring of stainless steel WN 1.4310
波纹管: C22.