Extraction Valve Steam Turbine

Product Introduction

Turbine extraction check valve description:

Installed in the extraction pipeline of 200MW, 300MW, 600MW and 1000MW units, once the pneumatic device components receive the gas reverse flow signal, it will act quickly to ensure that the valve is tightly closed, quickly isolate the steam turbine, and provide maximum protection to the steam turbine or steam extraction system.

Turbine extraction check valve structural drawing：

Turbine extraction check valve material：

Turbine extraction check valve main size：

PN 20（CLASS 150）

PN 40

PN 50（CLASS 300）

PN 64

PN 100

CLASS 150

CLASS 400

CLASS 600

Steam turbine extraction valve Design Features

Closing time is less than 0.5s

Valve seat sealing surface inclined design

The valve body cavity adopts a streamlined design

Actuator and valve closing parts are relatively independent

Closing rod opening with restriction mechanism

Steam turbine extraction valve Manufacturing range

Diameter: 2″~24″

Pressure: Ansey 600LB – 4500LB

Diameter: 576°C

Connection method: flange, welding

Operation mode: pneumatic, hydraulic

Turbine extraction check valve application

The extraction check valve is a valve used to prevent the backflow of the working fluid in the extraction pipeline of the steam turbine. Each extraction check valve is fully designed for the specified extraction parameters.

working medium

Steam, gas. If with actuator – a temperature not exceeding 80 ° C;

Connection to pipes

Flanged ends meet EN 1092-1, ASME B16.5, ASME B16.47 standards,

Face to face dimensions according to EN 558 series 14, 15

Welded ends to EN 12627, ASME B16.25, end-to-end dimensions to EN 12982