PRODUCTS

Vapor Extraction Check Valve

Internal Structure

 

Function:

The extraction check valve is one of the important facilities to ensure the safe operation of the turbine. When the turbine dumps the load, they are closed quickly to protect the turbine from over speeding due to the return flow of steam, and to prevent water from entering the turbine with the water from the heater and pipeline.

 

Difference with the old structure:

The actuator adopts 90 degree rotary actuator, no linkage mechanism, not easy to jam.

 

Material:

Operation Temperature

Body

Bonnet

Seat

Disc

Stem

≤425℃

WCB

A105

A105+STL

A105+STL

30Cr13

≤550℃

WC9

12Cr1MoV

12Cr1MoV+STL

12Cr1MoV+STL

38CrMoAlA