Electric Welded Gate Valve DN50 Price for High Pressure Steam Pipelines
Combining a welded gate valve with an electric actuator, this valve provides reliable remote control for high temperature and high pressure steam systems . This article provides essential 2026 pricing information and key selection parameters for DN50 electric welded gate valves for high pressure steam service.The main gate valve product names of China gate valve Network include:API Bellows gate valve,API Pneumatic Lug&wafer Knife-shaped Gate Valve,Electric Wafer Knife-shaped Gate Valve,Inside Screw Non-rising Stem Wedge Gate Valve,Manual Knife-shaped Gate Valve,Manual Slurry Valve,Manual Wedge Copper Gate ValveZ40/540/940H/Y Cast Steel Pressure Self-tight Gate Valve.
2026 Price Reference for DN50 Electric Welded Gate Valve
Prices for DN50 electric welded gate valves vary based on material grade, pressure rating, and supplier:
Standard carbon steel models (Z961H-40C) typically range from $175 to $200 USD (approximately 1,300-1,400 CNY) for PN40 configurations .
Premium alloy steel configurations (WC6/WC9) for higher temperatures command higher pricing, typically above $250 USD.
Bulk orders of 5+ pieces often qualify for volume discounts of 5-10% .
Key factors affecting price include specific material grade (WCB carbon steel vs WC6/WC9 alloy steel), pressure rating (PN16 to PN250/Class 900-2500), and certification requirements for power plant service.
Technical Specifications for DN50 Electric Welded Gate Valves
DN50 electric welded gate valves (Z960Y/Z961Y series) are specifically engineered for high pressure steam service:
Pressure and Temperature: Available in pressure ratings from PN16 to PN250 (1.6MPa to 25.0MPa) with temperature capability up to 550-570°C depending on material selection . Valve bodies feature pressure self-tightening (pressure seal) design where higher pressure improves sealing performance .
Materials: Body materials include WCB-A105 for standard service, WC6 (1.25Cr-0.5Mo) for temperatures up to 540°C, and WC9 (2.25Cr-1Mo) for temperatures up to 593°C . Sealing surfaces are hardfaced with Stellite cobalt-chromium alloy for wear resistance and reliable sealing at high temperatures . Valve stems are nitrided for corrosion and abrasion resistance.
Design Features: Welded ends eliminate leak paths, providing superior sealing for high pressure steam service. Flexible wedge design accommodates thermal expansion. Electric actuator supports remote control and local operation with 380V or 220V AC power . Full bore design minimizes pressure drop in steam systems.
Standards: JB/T3595 (Chinese power station valve standard), API 600, and ASME B16.34 for pressure-temperature ratings.
High Pressure Steam Applications
DN50 electric welded gate valves serve critical functions in main steam and superheater isolation, boiler feedwater and turbine bypass systems, and power plant auxiliary steam lines . The welded design is preferred for high pressure steam to eliminate flange leak risks in critical systems.
Selection Considerations for Steam Service
When specifying a DN50 electric welded gate valve for steam pipelines, verify temperature capability matches maximum operating temperature. For steam above 425°C, specify WC6 or WC9 alloy steel materials . During installation, open the valve and protect the stem area during welding to prevent heat damage to seals . For critical power plant applications, request certified material test reports (EN 10204 3.1).
Summary
DN50 electric welded gate valves are essential for reliable isolation in high pressure steam service, with 2026 prices ranging from approximately $175 USD for standard carbon steel models to premium configurations for higher temperatures. Welded construction provides leak-free performance, while Stellite hardfacing ensures long service life in demanding steam conditions. Selection requires careful evaluation of temperature rating, pressure class, and material grade based on specific steam system requirements.
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