Up to 4500
最高温度
Power 项目
第三卷/BPV
电厂在极端蒸汽条件下运行，要求阀门在热循环、高压差和连续运行中保持完整性。
Supercritical steam at 650degC / 30MPa demands forged Cr-Mo-V alloy valves with Stellite hardfacing. Welded bonnet designs eliminate leak paths. Creep-fatigue life analysis per ASME Section III for nuclear safety class valves.
High-pressure feedwater control valves must handle cavitation and erosion. Multi-stage trim designs reduce noise below 85dBA. Chrome-plated stems and Stellited seats extend service life in flashing condensate service.
Turbine trip and boiler emergency shutdown demand sub-second valve closure. Hydraulic/pneumatic actuators with spring-return and accumulator backup ensure fail-safe operation during power loss. SIL 3 certified ESD packages.
火电发电循环中的关键阀门应用。
Superheater, reheater, main steam isolation, blowdown, desuperheater
Parallel-slide gate valves and Y-pattern globe valves in forged F91/F92. Butt-weld ends for zero-leakage main steam isolation. Designed for 30+ year plant life.
Precision spray water control valves for steam temperature attemperation. Multi-nozzle design with characterized trim for turndown ratios up to 50:1.
Angle-body globe valves with Stellite hardfaced seat/disc. Continuous and intermittent blowdown service. Multi-stage pressure reduction to protect downstream piping.
HP/LP turbine bypass, gland steam, extraction check valves
High-capacity pressure reducing valves for 100% HP and LP turbine bypass. Cage-guided trim with multi-stage pressure reduction. Actuation time under 2 seconds for fast load rejection.
Non-return piston check valves for feedwater heater extraction lines. Counterweight-assisted fast closure prevents reverse steam flow into turbine during trip.
Water-sealed vacuum breakers and butterfly valves for condenser isolation. 316L construction for corrosion resistance. Bubble-tight shutoff under full vacuum conditions.
Cooling water, FGD, ash handling, chemical dosing, compressed air
Large-bore rubber-lined butterfly valves up to DN3000 for cooling water intake/discharge. AWWA C504 compliant with electric actuator for remote operation.
Ceramic-lined or rubber-lined valves for flue gas desulfurization. Abrasion-resistant design for limestone slurry. Full-bore to prevent solids accumulation.
Needle/globe valves for precise chemical injection of ammonia, phosphate, and oxygen scavengers. 316L trim for chemical compatibility with boiler water treatment.
为发电行业的可靠性和安全需求而设计的阀门产品。
F91/F92 - P91/P22 - Class 4500 - Butt Weld Ends
Forged Cr-Mo-V bodies for supercritical steam. Parallel-slide or flexible wedge disc. Butt-weld ends for pos. weld inspection.
Forged F22/F91 y-pattern for reduced pressure drop. Stellite 6 seat/disc hardfacing. OS&Y bolted bonnet with live-loaded packing.
Non-slam piston check design for feedwater and extraction steam. Dashpot-assisted closure. Minimizes water hammer in power plant piping.
HP/LP Bypass - Feedwater Control - Emergency Shutdown
Hydraulic actuated with <2s stroke. Multi-stage pressure reduction cage. SIL 3 certified for turbine protection.
Cage-guided with anti-cavitation trim. Inconel 718 internals. Electric or pneumatic actuation with HART 7 digital positioner for DCS integration.
Fire-safe ball valves with spring-return pneumatic actuators. SIL 3 certified with partial stroke testing capability for online proof testing.
DN3000 - Rubber/PTFE Lined - AWWA C504 - Electric Actuated
Rubber or PTFE lined, sizes up to DN3000. Replaceable seat design for extended service. Electric actuator with battery backup for station blackout.
Stainless steel with hard-chrome plated gate. Full-bore passage for slurry. Pneumatic cylinder actuation with abrasion-resistant packing.
Wafer-type for cooling water pump discharge. Resilient or metal seated. Stainless steel spring for quick closure and water hammer prevention.
Online Diagnostics - Predictive Maintenance - Spare Parts
SIL certified PST for ESD valves. Online testing without process interruption. Automatic test scheduling and documentation.
Torque signature analysis, position trending, and packing leakage monitoring. Early warning of degradation for planned outage maintenance.
Dedicated power plant outage support teams. Strategic spare parts inventory management. 24/7 emergency response for critical valve issues.
N-Stamp certified for nuclear safety-related valves. Full material traceability with certified mill test reports per NQA-1 quality program.
100% PMI on all pressure parts. RT/UT/MT/PT per ASME Section V. Positive material identification from casting/forging to final assembly.
API 607 / 6FA fire-safe testing. Graphite primary + metal secondary seals. Functional after 30-minute burn test for power plant safety applications.
Valve condition assessment, remanufacturing programs, and obsolescence management. Extending service life of existing power plant valve assets.