Product Specification
| Design spec | Face to face | Design spec | Test & Check | Marking | Supply |
| JB/T8691 | GB/T12221 | JB/T79 | JB/T8691 | GB/T12223 | JB/T7928 |
| MSS SP-81 | MSS SP-81 | ASME B 16.5 | MSS SP-81 | MSS SP-25 | MSS SP-81 |
Main Part Specification
| Part Name | Main body material code | |
| Body/Bonnet | Carbon steel/ stainless steel | C.S / S.S |
| Disc | Stainless steel | S.S |
| Stem | Stainless steel | S.S |
| Packing | Rubber/PTFE/Graphite | ABS/PTFE/Graphite |
| Suitale Temp | -29 ~ + 425°C |
|
| Suitale Medium | Paper pulp, mixture of sewage, coal slumy , ashanderiflux | |