Full-Condition Fluid Control Solutions for the Power Industry

As the power industry transitions from traditional to clean energy, every segment—whether high-temperature/high-pressure steam systems in coal-fired plants, fast-start gas turbines, or precision fluid control in renewable energy—demands valves with exceptional reliability, temperature/pressure resistance, and intelligence. With over two decades of expertise, YYF, a technological leader in industrial valves, offers customized solutions covering eight core valve types for thermal, nuclear, hydropower, and renewable energy applications. From boiler steam cycles to turbine bypass protection, our valves excel in material performance, control precision, and lifecycle service, empowering clients to achieve safe and efficient power generation.

I. Core Valve Types for Power Industry: Tailored Solutions for Diverse Energy Scenarios

Power systems involve complex energy conversion, transmission, and distribution, with varying demands for temperature (-269℃~650℃), pressure (10-3000 PSI), and regulation precision. YYF addresses industry pain points with eight key product lines:

1. Gate Valves – Sealing Benchmark for High-Temperature/Pressure Systems

Gate valves ensure unobstructed flow via wedge-shaped gates, critical for main steam pipelines in coal-fired plants and high-pressure feedwater in nuclear reactors. YYF gate valves use forged alloy steel (A105, F91) with hard alloy overlay seals:

Technical Advantages:
- Creep-resistant design enables 100,000-hour operation at 600℃ without deformation, complying with ASME BPVC Section III nuclear-grade standards;
- Flow-optimized 导流孔 reduce pressure drop by 15%, minimizing steam turbine energy consumption;
- Self-cleaning seals prevent iron oxide particle jamming, suitable for high-impurity steam in coal plants.
Applications: Coal-fired boiler superheater outlets, nuclear reactor primary coolant pipelines, combined-cycle HRSG main steam valves—ideal for low-frequency, high-sealing needs in large diameters (DN100-DN1000).

2. Globe Valves – Precision Flow Control Experts

Globe valves achieve fine flow regulation through linear disc-seat contact, essential for feedwater control and turbine bypass systems. YYF globe valves feature streamlined cavities and multi-stage pressure reduction:

Technical Advantages:
- Inconel 718 guide sleeves enhance wear resistance by 300% at 550℃;
- Bellows seal structure (Patent No.: ZL2022XXXXXX) eliminates external leakage, suitable for radioactive media in nuclear plants and hydrogen pipelines in gas turbines;
- Smart electric actuators with ±0.5% positioning accuracy support real-time DCS calibration.
Applications: Thermal power feedwater control stations, nuclear chemical volume control systems, gas turbine fuel gas regulation—perfect for precise throttling in small-to-medium diameters (DN25-DN300).

3. Check Valves – Backflow Prevention Safeguards

Check valves automatically block reverse flow to protect pumps and turbines from water hammer. YYF develops impact-resistant designs for power media:

Technical Advantages:
- Swing-type discs with damping reduce minimum activation pressure to 0.05MPa, suitable for low-head residual heat removal in nuclear plants;
- Stellite alloy overlay extends seat life to 15 years, ideal for wet steam in turbine extraction lines;
- Rubber buffers reduce water hammer pressure by 60%, protecting generator cooling water pipelines.
Applications: Coal-fired feedwater pump outlets, nuclear safety injection lines, hydropower turbine inlets—critical for media with particles or frequent starts/stops.

4. Ball Valves – Versatile Quick-Shutoff Solutions

Ball valves offer 360° sealing and rapid operation, excelling in gas power and renewables. YYF provides floating and trunnion-mounted designs:

Technical Advantages:
- Tungsten carbide-coated balls enhance particle resistance by 40%, suitable for dusty biomass gas;
- Metal seals comply with API 6FA fire safety, ensuring zero leakage above 300℃;
- Anti-static springs eliminate electrostatic risks in flammable media like natural gas and hydrogen.
Applications: Gas turbine fuel gas emergency shutdown, CSP thermal oil circuits, energy storage battery fluid control—ideal for fast-switching, high-tightness in DN15-DN500.

5. Butterfly Valves – Efficient Large-Diameter Regulation

Lightweight and fast-acting, butterfly valves dominate flow control in hydropower penstocks and cooling water systems. YYF offers double-offset metal or EPDM soft seals:

Technical Advantages:
- Ceramic-epoxy composite coating triples seawater corrosion resistance for coastal plant cooling water;
- Lug-type bodies save 30% installation space, with hydraulic actuators responding in <1 second for hydropower emergency shutdown;
- API 607 fire-safe graphite seals maintain integrity for 15 minutes under fire conditions.
Applications: Hydropower turbine inlet valves (DN2000+), thermal power condenser cooling water, wind turbine tower cooling—suitable for large-flow regulation and energy saving.

6. Safety Relief Valves – Final Barrier for Overpressure Protection

Safety valves ensure process safety by releasing excess pressure, critical for boilers and pressure vessels. YYF’s intelligent micro-lift design:

Technical Advantages:
- ±1% reseating accuracy minimizes unnecessary steam discharge;
- Bellows-balanced design eliminates backpressure effects for nuclear pressurizers and thermal reheaters;
- Nickel-based alloy springs and internals resist high-temperature oxidation and sulfur corrosion, compliant with ASME BPVC Section I and GB/T 12243.
Applications: Coal boiler drum safety protection, nuclear reactor pressure vessel relief, HRSG steam pipeline safety—meeting strict power industry safety codes.

7. Control Valves – Core of Intelligent Regulation

Control valves enable automatic flow/pressure adjustment via control signals, key for power plant digital transformation. YYF offers pneumatic, electric, and hydraulic drives:

Technical Advantages:
- Multi-stage pressure-reducing sleeves control noise below 85dB (ISO 11670);
- Smart positioners support HART/Profibus for seamless DCS integration, with ±0.3% regulation accuracy;
- Radiation-resistant designs for nuclear applications maintain ≤5% performance degradation under 10⁶ Gy.
Applications: Thermal DEH system steam regulation, nuclear pressurizer level control, waste-to-energy steam temperature adjustment—adapting to high-precision automation.

8. Cryogenic Valves – Specialized for Clean Energy

Cryogenic valves address sealing and embrittlement at -196℃ for LNG and hydrogen. YYF uses fully austenitic stainless steel (304L, 316L) and long-neck bonnets:

Technical Advantages:
- Deep cryogenic treatment ensures ≥60J impact toughness at -200℃, 30% better than conventional materials;
- PTFE soft seals achieve bubble-tight leakage (≤1×10⁻⁹ m³/s) for LNG terminals;
- Lightweight aluminum alloy bodies reduce weight by 40%, lowering offshore wind platform loads.
Applications: LNG regasification cryogenic pipelines, hydrogen fuel cell cooling circuits, cryogenic air separation—meeting extreme low-temperature needs in clean energy.

II. YYF’s Core Competencies: Full-Chain Advantages from Materials to Service

High-Temperature/Pressure Material Leadership:
- Proprietary YYF-P1 heat-resistant alloy (9%Cr, 1%Mo) offers 180MPa creep strength at 620℃, suitable for ultra-supercritical main steam;
- Vacuum heat treatment improves valve disc hardness uniformity by 25%, leading in high-temperature fatigue resistance.
Smart Maintenance Empowerment:
- YYF-IoT modules monitor real-time data (temperature, torque, leakage) via 5G/NB-IoT for predictive maintenance, reducing unplanned downtime by 30%;
- Digital twin technology simulates valve performance under load fluctuations to optimize maintenance strategies.
Lifecycle Compliance Assurance:
- End-to-end traceability from material smelting (blockchain) to welding (ASME IX certification);
- Certifications include API 6D, CE/PED, GB/T 12224 for global project compatibility.
Customized Engineering Adaptation:
- Specialized valves for CAP300/AP1000 nuclear reactors, passing seismic (1.5g) and aging tests;
- Ceramic-composite sealed valves for CSP molten salt loops, solving crystallization blockage at 1000℃.

III. Addressing Procurement Priorities in Power Industry

For power procurement decision-makers, YYF solves key challenges:

Extreme Condition Reliability: 40% longer lifespan than conventional valves in ultra-critical plants (600℃, 25MPa), reducing high-temperature maintenance;
Energy Efficiency: CFD-optimized flow paths reduce pressure loss by 12%, saving millions in annual energy costs for 1GW units;
Digital Adaptation: Smart valves compatible with plant SIS systems enable full automation, supporting smart power grid construction.

IV. Industry Trends & YYF’s Forward-Looking Initiatives

With “Double Carbon” goals driving energy transition, YYF leads innovation:

Renewable Adaptation: Wear-resistant ball valves for CSP molten salt pumps, enduring frequent start/stop cycles;
Zero-Carbon Technology: Hydrogen embrittlement-resistant valves for 70MPa high-pressure hydrogen pipelines in green hydrogen projects;
Digital Upgrade: Digital twin-enabled control valves for precise load regulation, assisting deep peaking in thermal plants.

V. Partner with YYF for Power Safety and Efficiency

In the power industry, where precision ensures stability, YYF industrial valves embody a “zero-defect” philosophy across R&D, manufacturing, and service. From traditional thermal efficiency to renewable innovation, we deliver customized solutions to the highest standards—ensuring every fluid control action balances safety and performance.

Contact YYF’s power industry experts today to receive a tailored valve configuration for your application, and together, build a cleaner, more reliable power generation system.