The working medium flows in single direction.
| Working Pressure | 2000PSI～20000PSI | Nominal Bore | 2.1/16"～4.1/16" (52mm～103mm) |
| Working Medium | oil、natural gas、mud and gas containing H2S、CO2 | Working Temperature | -46°C～121°C（Class LU） |
| Material Class | AA、BB、CC、DD、EE、FF、HH | Specification level | PSL1-4 |
| Performance Requirement | PR1-2 |
China
Russia