Power Generation
High-integrity valves for steam, feedwater and cooling circuits: forged and cast gate, globe and check valves rated for the pressures, temperatures and thermal cycling of power plant service.
Power plants subject their valves to extremes: superheated steam, high-pressure feedwater, thermal shock and constant cycling. From the boiler to the turbine and out to the cooling water system, each duty needs a valve rated precisely for its pressure, temperature and service conditions, with the integrity to perform safely over decades.
Purple Valves supplies the forged and cast gate, globe and check valves that isolate, regulate and protect power generation circuits, in carbon, alloy and stainless steels matched to everything from low-pressure cooling water to main steam lines above ANSI Class 1500.
Common Challenges in Power Generation
Extreme pressure and temperature
Main steam and reheat lines operate at very high pressure and temperature. Valves require forged bodies, high-grade alloys and pressure-seal bonnets to maintain integrity at the top of the range.
Thermal cycling and shock
Start-up, shutdown and load changes impose repeated thermal shock. Robust body design and matched materials prevent distortion, seat damage and leakage over thousands of cycles.
Precise control and backflow protection
Feedwater and bypass duties demand fine throttling, while pressure surges threaten pumps. Globe valves give accurate control and check valves protect against damaging reverse flow.
Recommended Valve Types
Forged Gate Valves
Tight shut-off and minimal pressure drop on main steam, reheat and high-pressure feedwater lines, with pressure-seal bonnets for the highest classes.
View 12 products
Globe Valves
Precise throttling for feedwater regulation, turbine bypass and drain lines where accurate flow control is essential.
View 42 products
Control Valves
Automated regulation of flow, pressure and level where repeatable, fine control matters more than simple isolation.
View 17 products
Check Valves
Forged check valves protect boiler feed pumps and headers from pressure surges and reverse flow under thermal-shock conditions.
View 12 productsApplications, Materials & Standards
Key Applications
- Main steam and reheat lines
- Boiler feedwater and economiser circuits
- Turbine bypass and drains
- Condensate and heater drains
- Cooling and circulating water systems
- Auxiliary steam and balance-of-plant
Typical Materials
- Carbon steel (A105, WCB) for moderate-temperature lines
- Alloy steels (F11, F22, F91) for high-temperature steam
- Stainless trim and hard-faced (Stellite) seats
- Pressure-seal bonnets for high-pressure classes
Standards & Certifications
- ASME B16.34 pressure-temperature design
- API 600 / API 602 gate valves
- ASME Boiler & Pressure Vessel Code alignment
- API 598 inspection and testing
Specifying valves for power generation?
Tell us your size, pressure class and service conditions and our team will recommend the right valve for the duty, with pricing and availability.