1、 Introduction to Power Station Valves

Power station valve, also known as power station valve, is mainly suitable for cutting off or connecting pipeline media in various systems of thermal power plants. Applicable media: non corrosive media such as water and steam. The characteristics of power station valves compared to other valve products are high temperature and high pressure, and a self sealing design. The higher the pressure, the more reliable the seal. Due to its unique performance, technical characteristics, and working conditions, the product has also developed unique features that cannot be replaced by other products.

2、 Main design specifications for power station valves

Design and Manufacturing GB/T12234 ASMEB16.34
Structural length JB/T3595
Interface connection dimensions JB/T3595 GB/T12224
Inspection and Testing JB/T3595 MSS SP61
Pressure and Temperature Reference JB/T3595 ANSI B16.34

3、 Main pressure levels of power station valves

Nominal pressure 200, 250, 320
Work pressure: P 55 100V, P 55 140V, P 55 170V

4、 Advantages of power station valve structure

1. Adopting a pressure self tightening seal, the valve body branch pipe is welded at both ends.
2. The sealing surfaces of the valve seat and valve disc are made of cobalt based hard alloy plasma spray welding, which has good wear resistance and abrasion resistance.
3. The valve stem has undergone anti-corrosion nitriding treatment, which provides good corrosion resistance and abrasion resistance.

5、 Standards related to power station valves

JBT 3595-2002 General Requirements for Power Station Valves
JB/T 5263-2005 Technical Conditions for Steel Castings of Power Station Valves
JB/T 4018 Method for Model Designation of Power Station Valves
DL 959-2005 Guidelines for the Application of Safety Valves in Power Plant Boilers
DLT 531-1994 Technical Conditions for High Temperature and High Pressure Stop Valve and Gate Valve of Power Station
DLT 641-2005 Electric actuator for power station valves
DLT 850-2004 Power Station Piping
GB 10869 Technical Conditions for Power Station Regulating Valves
GBT 10868-2005 Power Station Temperature and Pressure Reducing Valve