News and Information

The domestic production rate of high-end valves has surpassed 65% for the first time, with cutting-edge technology for extreme operating conditions proving to be the key to breaking through challenges.

By 2025, the domestic valve market has surpassed 200 billion yuan in size. Notably, the localization rate of high-end valves has achieved a historic leap, exceeding 65% for the first time—up 18 percentage points from 2023. This breakthrough is largely driven by a significant surge in advanced extreme-condition technologies, enabling domestically produced valves to gradually replace foreign-made products in previously monopolized areas such as deep-sea applications, ultra-low temperatures, and nuclear-grade systems.

Release date:

2021-11-12

​ By 2025, the domestic valve market has surpassed 200 billion yuan in size. Notably, the localization rate of high-end valves has achieved a historic leap, exceeding 65% for the first time—up 18 percentage points from 2023. This breakthrough is largely driven by a significant surge in advanced extreme-condition technologies, enabling domestically produced valves to gradually replace foreign-made products in previously monopolized areas such as deep-sea applications, ultra-low temperatures, and nuclear-grade systems. ​

 In the field of deep-sea equipment, a deep-sea ball valve capable of withstanding pressures up to 25,000 psi has earned international DNV certification. Its innovative sealing material ensures long-term stable operation even in underwater environments as deep as 1,500 meters, with a leakage rate maintained below 1 × 10⁻⁹ Pa·m³/s. Remarkably, this valve is priced 40% lower than comparable imported products and has already been deployed in bulk for oil and gas extraction projects in the South China Sea.  

In the ultra-low-temperature sector, a ball valve designed for LNG applications at -196°C has successfully broken through foreign technology barriers. Leveraging a vacuum lost-foam casting process, it enhances material density, significantly extending the product’s service life—up to three times longer than conventional alternatives. This cutting-edge valve has secured contracts worth over 360 million yuan in major LNG projects, including those led by Xinjiang Guanghui.  

Meanwhile, in the nuclear-grade segment, companies are steadily refining their comprehensive qualification systems for Level 1, 2, and 3 nuclear valves, positioning themselves to supply critical components like main steam isolation valves for groundbreaking projects such as "Hualong One" and "Guohe One." As a result, the domestic production rate for these high-tech valves has now surpassed 90%.  

Industry experts highlight that leading enterprises typically allocate more than 8% of their revenue to R&D investments, boasting an average patent portfolio exceeding 60 items. These technological breakthroughs are driving China’s manufacturing industry to shift from a strategy focused on sheer scale to one centered on setting technical standards—a transformation that promises to redefine global competitiveness in the years ahead.

The pneumatic pressure regulating valve is a pressure-balanced type, featuring cage-guided operation and a dual-seal design. It is equipped with a multi-spring pneumatic diaphragm actuator, which boasts a compact height, lightweight construction, and easy installation.

2020-04-28

Causes and Prevention of Flashing and Cavitation in Control Valves

Flash vaporization occurs when a non-compressible fluid, after being throttled through a control valve, experiences a drop in static pressure—from the vena contracta section all the way to the valve outlet—until the pressure equals or falls below the fluid’s saturation vapor pressure at the valve inlet temperature. This causes partial liquid evaporation, resulting in a two-phase mixture of gas and liquid downstream of the valve. The onset of flash vaporization leads to a point where the liquid flow no longer increases with further pressure drops, triggering choked flow conditions. Additionally, flash vaporization generates a gas-liquid two-phase flow, with both gas and liquid simultaneously flowing through the valve trim and downstream piping, causing erosion. A distinctive feature of this phenomenon is that the valve trim develops a smooth, polished appearance.

2020-04-28

Design and Selection of Low-Noise Control Valves

Most noise in control valves occurs with compressible fluids, as some of the energy is converted into sound during the throttling process. A common rule of thumb for estimation is this: if the product of the Cv value and the inlet pressure exceeds 1,000, the control valve will generate significant noise under critical pressure drop conditions.

2020-04-28

China's valve industry has become an essential component in the production processes of numerous industries.

In recent years, China's valve industry has entered a period of rapid growth, with the barriers to entry in the sector steadily rising. Today, it has become one of Asia's largest valve manufacturing hubs.

2022-07-28

Energy-saving control valve: A Path Toward Lower Energy Consumption

Employing control valves with a low pressure-drop ratio helps reduce the proportion of the valve's pressure drop relative to the system’s total pressure loss, thereby lowering energy consumption. As a result, designing control valves with a low pressure-drop ratio has become one of the key development directions—while another promising avenue is the adoption of low-impedance control valves, such as butterfly valves or eccentric rotary valves. Additionally, self-operated control valves are gaining traction; for instance, directly utilizing the downstream medium’s pressure to create a self-regulating control system, leveraging the controlled medium’s own energy to maintain precise pressure regulation downstream.

2022-01-10

Green valves emerge as a new growth driver, while low-carbon technologies propel industrial upgrades.

Driven by the "Dual Carbon" strategy, green and low-carbon practices have become the core direction for innovation and development in the valve industry. Energy-efficient, low-emission valve products are rapidly gaining traction, with the related market expected to surpass 30 billion yuan by 2025—representing a robust 27% year-on-year growth and emerging as the industry's new engine for expansion.

2021-11-12

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