- Comply with ASME B16.5, ASME B16.34, API 608, API 598 standards

- Construction length conforms to ASME B16.10 long series

- Gear transmission meets 8-24 "(200-600mm) SB-150/300 and 6-12" (150-300mm) SB-600 valves

- Memory seal seat automatically compensates for pressure and temperature wear and fluctuations

- Long life cycle

- low torque

- Prevent blowout stem

- Stem bearing reduces side thrust

- Multiple solid Teflon or V-stem seals (adjustable)

- Live load thrust gasket prevents sticking and provides stem double seal

- The winding pad with stainless steel wire is completely closed

- All ball valves have pressure relief holes