High-Pressure Gate Valves
Main-steam, reheat-steam, feedwater and boiler-system isolation.
Flexible wedge · Double-wedge · Parallel double-disc · Hardened sealing surfaces
DN50–DN900 / NPS 2–36Class 150–4500 SpecialView product details →
Honyen Holding | HEVCPOWER GENERATION VALVES
HIGH-TEMPERATURE DEVELOPMENT
Proven ultra-supercritical project experience provides the foundation for next-generation high-temperature valve development.
Critical scope included boiler safety valves, power control and relief valves, and steam-turbine bypass valves. The figures below describe the generating unit and its published operating conditions.
Advanced materials, sealing technology and controlled manufacturing processes are being developed for 650°C-class high-efficiency generating units.
OUR POWER GENERATION VALVE PORTFOLIO
Main steam · Reheat steam · Feedwater · Boiler systems
Circulating water · Cooling water · Plant utilities · AI data center
Main-steam, reheat-steam, feedwater and boiler-system isolation.
Flexible wedge · Double-wedge · Parallel double-disc · Hardened sealing surfaces
DN50–DN900 / NPS 2–36High-temperature steam and feedwater shutoff, with throttling duty selected for the required pressure drop.
Y-pattern · T-pattern · Wear- and erosion-resistant sealing surfaces
DN50–DN400 / NPS 2–16Feedwater, pump-discharge and critical steam-line protection.
Swing · Lift · Axial-flow · Atmospheric-exhaust configurations
DN50–DN400 / NPS 2–16Circulating water, cooling water, plant utilities and selected steam service.
Triple-offset geometry · Metal seating · Low-rubbing operation · Compact envelope
DN80–DN2000 / NPS 3–80Startup · Shutdown · Turbine trip · Pressure control · Extraction protection
Startup, shutdown, turbine trip and load-transition steam management.
Multi-stage pressure reduction · Desuperheating · Thermal-cycling design
Project evidence: 650°C / 34 MPa · 625°C / 38.5 MPaView product details →Steam and feedwater control where high pressure drop, cavitation, erosion or noise limits performance.
Plunger · Sleeve · Labyrinth trim · Anti-cavitation / anti-erosion design
DN40–DN250 / NPS 1/2–12 Reverse-flow protection for extraction-steam lines and feedwater-heater systems.
Fast-closing duty · Actuator logic · Fail action · Turbine-protection integration
Size, pressure and closing response: project-configuredView product details →BACKED BY HARBIN ELECTRIC
HEVC is supported by the valve manufacturing platform within Harbin Electric Corporation, combining critical-valve engineering, controlled manufacturing and dedicated validation capabilities for demanding power-generation applications.
Large-scale manufacturing platform with dedicated production, testing equipment and large-component machining capability.
Total Harbin manufacturing site, including production and supporting operations.
Dedicated production area within the manufacturing platform.
Published annual valve production capacity.
Manufacturing and testing equipment across the production platform.
Vertical CNC turning capacity for large valve components.
Capabilities spanning extreme pressure, temperature, size and service conditions for advanced power-generation applications.
Published pressure-class capability for critical power valves.
Large-bore power valve manufacturing envelope.
Cryogenic qualification capability for applicable valve designs.
Published power-valve temperature capability.
Advanced development direction for next-generation power service.
Dedicated validation capabilities for pressure, high-temperature steam, cryogenic service, lifecycle durability and flow performance.
High-temperature steam testing at up to 570°C and 4 t/h for applicable valve configurations.
Cycle and durability validation for valves up to DN600 and Class 2500.
Low-temperature validation capability up to DN600 and Class 1500 for applicable designs.
Cv, resistance and performance measurement across the published size range.
Applicable certifications vary by valve type, manufacturing location and project requirements.
PROVEN MANUFACTURING PLATFORM EXPERIENCE
Published manufacturing-platform references span 86 generating units and 47.8 GW of represented capacity across 350 MW to 1,000 MW-class projects.
Published manufacturer references across multiple utility-scale and ultra-large power-generation projects.
Combined nominal generating capacity represented by the published large-unit project references.
Experience spanning utility-scale generating units through 1,000 MW-class power projects.
Published manufacturer project experience covering ten separate 1,000 MW-class generating units.
Published manufacturer references covering thirty-six 660 MW-class generating units.
Published manufacturer references covering forty 350 MW-class generating units.
World’s First Commercially Operating 1,000 MW-Class 630°C Double-Reheat Ultra-Supercritical Unit
A flagship manufacturer project reference demonstrating engineering capability for extreme high-temperature and high-pressure power-generation service.
Project conditions and published ranges describe specific manufacturing-platform capabilities and references. Individual valve ratings are confirmed by model, material and configuration. HEVC products are exclusively represented in North America by Honyen Holding.
