Standard reference
1. Design and manufacuture standard: MSS SP-81, JB/T8691 etc.
2. Face to face dimention standard: MSS SP-81, GB/T15188.2 etc.
3. Flange connecting standard: ANSI B 16.5, JB/T79, DIN 2532, JIS B2212, BS4504 ect.
4. Test and inspection standard: MSS SP-81, JB/T8691 etc.

Material for main parts
1. Body: CF8/CF8M/CF3/CF3M/A105/LF2/F11 and so on.
2. Knife: SS304 / 304L/ SS316/ 316L /WCB / LCB / WC9 and so on
3. Stem: 304/ 316/ Cr13% and so on
4. Seat: Rubber/ Teflon /PTFE/ Hard Alloy/Cr13% etc.
5. Packing: PTFE, Strenged Graphite etc.