Power Generation
High-temperature and high-pressure valves for fossil fuel, nuclear, and renewable energy plants. FLOWKS gate valves and globe valves are proven in power generation service worldwide.
Recommended Solutions
Flexible Wedge Gate Valve
One-piece wedge with a slot allowing flexibility for tight sealing in varying temperatures.
Standard Globe Valve
Z-body globe valve for general throttling and isolation service.
Trunnion Mounted Ball Valve
Anchored ball design with spring-loaded seats for reliable sealing in high-pressure service. Side-entry and forged body options available.
Applications in Power Generation
Main Steam & Reheat Systems
Main steam lines carry superheated steam from boiler to turbine at 540-565degC and 170-250 bar. Flexible wedge gate valves isolate boiler sections during startup and maintenance. Globe valves control attemperator spray water for steam temperature regulation. Chrome-moly alloy steel (WC6/WC9) handles thermal cycling without creep degradation.
Feedwater & Condensate
Boiler feedwater pumps deliver high-pressure water to the boiler through feedwater control valves. These globe-style control valves experience severe cavitation and flashing service. Anti-cavity trim designs with multi-stage pressure let-down extend valve life. Condensate extraction pumps use check valves with low-cracking-pressure springs.
Cooling Water & Circulating Water
Once-through and recirculating cooling water systems use large-diameter butterfly valves (24-72 inch) for flow isolation. Rubber-lined or epoxy-coated valves resist corrosion in brackish or seawater cooling. Condenser tube bundles require isolation gates for cleaning and maintenance access.
Flue Gas Desulfurization (FGD)
Wet FGD scrubbers remove SO2 from boiler flue gas using limestone slurry. Slurry valves handle abrasive limestone and gypsum mixtures. Rubber-lined butterfly valves and pinch valves are common. For outlet isolation, double-lugged butterfly valves provide bubble-tight shutoff against corrosive saturated flue gas.
Industry Standards
Valves -- Pressure-Temperature Ratings
Pressure boundary requirements
Power Piping
Piping system design for power plants
Valve Inspection & Testing
Factory acceptance testing
Butterfly Valves
Design and testing standards
Industrial Control Valves
Control valve sizing and noise prediction
Materials Available
- ●WC6 (1.25Cr-0.5Mo)
- ●WC9 (2.25Cr-1Mo)
- ●C12A (Grade 91)
- ●A105
- ●316SS
- ●Rubber-Lined Steel
- ●Epoxy-Coated Steel
Frequently Asked Questions
Why use flexible wedge gate valves instead of solid wedge in steam service?+
What materials are used for high-temperature steam valves?+
How are control valves sized for feedwater service?+
What valve certifications are required for nuclear power plants?+
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