[Wenzhou, China] – [Oct 08, 2025] – HUANQIU VALVE GROUP (hereinafter referred to as "HUANQIU") recently announced the successful manufacture and shipment of its independently developed 42MPa ultra-high pressure water service single-acting pneumatic ball valves. These valves are destined for Domestic Power Plant Project. This delivery marks a significant breakthrough for China in the field of ultra-high pressure critical process control valves, providing robust equipment support for enhancing the safety, reliability, and automation level of power plant systems.

Designed for Extreme Conditions, Exceptional Technical Performance

The shipped 42MPa high-pressure pneumatic ball valves are specifically engineered for the most demanding applications within power plants and other industrial sectors. Their core applications include boiler feedwater systems, chemical water treatment, and high-pressure injection systems, where extreme demands are placed on a valve's pressure-bearing capacity, sealing performance, and response speed.

Key technical features of these valves include:

1. Ultra-High Pressure Resistance: A nominal pressure rating of 42MPa (approximately 420 bar), enabling stable operation under extreme pressures found in applications like main feedwater lines. This ensures system stability under high pressure and eliminates risks of leakage or failure due to inadequate pressure tolerance.
2. Precision Sealing Design: Utilizing a special structure and advanced sealing materials (such as metal hard seals: Gr.660+HF, Stem is Inconel 718), the valves achieve zero-leakage sealing even under ultra-high pressure differentials. Critical sealing areas, including the seat-to-ball and stem seals, are precision-engineered and processed to effectively resist erosion and cavitation from water media, extending service life.
3. Single-Acting Pneumatic Actuator: Equipped with a high-performance single-acting (spring-return) pneumatic actuator. It provides precise opening or closing under normal air supply. In the event of accidental air loss or an emergency, the internal spring automatically and rapidly returns the valve to a predetermined safe position (typically closed or open), significantly enhancing the system's fail-safe protection capability and meeting the needs of power plant automation control and safety interlocks.
4. Superior Materials and Manufacturing: Core components like the valve body, ball, and stem are manufactured from high-strength alloy steel, stainless steel, and other premium materials. Advanced processes including forging, heat treatment, and surface hardening are employed to ensure exceptional mechanical strength, corrosion resistance, and wear resistance, suitable for the complex media environments in power plants.
5. Smart Interface Capability: The actuators can be integrated with auxiliary modules such as limit switches, solenoid valves, and positioners, facilitating easy connection to the plant's Distributed Control System (DCS) or Programmable Logic Controller (PLC). This enables remote control, status feedback, and precise modulation, supporting the trend towards intelligent and reduced-manning operation in power plants.

Overcoming Manufacturing Challenges, Ensuring Reliable Operation

The manufacturing of 42MPa high-pressure valves involves significant technical challenges across materials science, precision machining, and assembly processes. Through several years of dedicated R&D, the project team at HUANQIU successfully overcame key hurdles, including structural strength design under ultra-high pressure, matching and lapping of sealing pairs, and precise calculation of actuator output torque and spring return reliability. Every valve undergoes rigorous pressure testing (shell strength, seat sealing), operational performance tests, and non-destructive examination before leaving the factory, ensuring its performance fully meets or exceeds design standards and relevant industry specifications.

Empowering the Energy Industry, Promising Market Prospects

The successful delivery of these high-pressure pneumatic ball valves not only meets the specific requirements of the power plants project but also demonstrates HUANQIU's R&D capability and manufacturing expertise in the high-end industrial valve sector. This valve type is suitable for widespread application in thermal power generation, nuclear power, petrochemicals, metallurgy, and other fields requiring ultra-high pressure fluid control. It holds strategic importance for ensuring the autonomous and controllable supply of critical national energy equipment and enhancing the intrinsic safety level of industrial infrastructure.

A HUANQIU engineer stated: "We are honored to supply these high-performance 42MPa high-pressure valves for the power plants project. Their successful shipment is another significant achievement resulting from our commitment to technological innovation and customer focus. Moving forward, we will continue to deepen our expertise in the high-end valve sector, continually introducing more market-oriented, technologically leading products to contribute Chinese expertise to the safe, efficient, and green development of the global energy and power industry."