Design Features：

Shrouded seat prevents secondary damage in the event of a seat fracture.

Seats are driven by pins, safer and more reliable.

Floating seats can improve adaptability.

Two seal modules are oriented in the same direction behind each other. The first seal bears all or most of sealing pressure, and the second seal would run as backup seal. So this type of seal has high security.

The primary leakage of process gas from the first seal can be flared; little process leakage from the second seal can be safely vented.