Suitable for sizes less 6”, with anti-blow out stem, Anti-static, Double Block and Bleed, Fire Safe, Triple barrier stem seals, the upper seal can be replaced with the valves in-line under pressure with the ball in the closed and full open position.

Lower operation torque.

No pipe line direction force applied on stem.

Especially suitable for high pressure class working condition.

Special requirement available:
1. SPE DPE function valve.
2. Metal to metal primary seal, secondly soft seal.
3. Both DPE seals.
4. Cryogenic service.
5. Metal to metal seal.
6. Flow rate control available.

Engineering Innovation: 
● Dynamic seal AED buffer sealing available.
● No pipeline force applied on stem.
● High pressure gas ZERO bubble leaking.

QSL 3G and PSL 3G and higher level are recommended by us