Welded Power Station Stop Valve: Structure, Materials, and Application Guide
Small-Diameter Welded Stop Valve (DN10-DN40)
This series features a lightweight integrated structure combining the packing chamber and valve body, offering compact design, flexible operation, and easy maintenance. Key specifications include:
Applicable diameter: DN10–DN40
Valve body materials: Carbon steel or chromium-molybdenum-vanadium steel for high-temperature resistance
Sealing surface: Stellite alloy hardfacing, wear and corrosion resistant
Stem protection: Anti-corrosion nitriding or electroless nickel plating
Applications: Water and steam pipeline shutoff and regulation in thermal power plants
The main stop valve product names of China Stop Valve Network include:Globe Valve,
Flange Globe Valve,Electric Globe Valve,Pneumatic Globe Valve,Bellows Globe Valve,Stainless Steel Globe Valve,High Temperature and Pressure Globe Valve,Cast Steel Globe Valve.
Large-Diameter Flanged Stop Valve (DN50-DN100)
This series adopts a high-rigidity flanged connection with metal serrated gasket sealing, ensuring reliable performance under extreme conditions. Core features:
Applicable diameter: DN50–DN100
Connection: Flanged with metal serrated gasket
Valve body materials: Carbon steel or chromium-molybdenum-vanadium steel
Sealing surface: Stellite alloy hardfacing
Stem protection: Nitriding or electroless nickel plating
Stud treatment: Phosphated for enhanced corrosion resistance
Core Advantages
Reliable Structure: Both designs ensure strength and sealing integrity
Quality Materials: Multiple material options for different temperature/pressure requirements
Superior Craftsmanship: Stellite hardfacing and multi-protection stem treatment extend service life
Easy Maintenance: Thoughtful design reduces downtime and maintenance costs
Selection Guide
Choose the appropriate structure based on pipeline diameter:
DN10–DN40: Integrated lightweight welded structure
DN50–DN100: Flanged connection structure for long-term stability
Summary
With scientifically designed structures and high-quality materials, welded power station stop valves deliver safe, stable, and reliable shutoff and regulation solutions for water and steam pipeline systems in thermal power plants under demanding operating conditions.
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