Product Overview
Self-operated Control Valve: Precision Control Expert for High-pressure and Large-flow Conditions
For the complex demands of high-pressure and large-flow media control in industrial processes, we introduce a new-generation cage-structure self-operated control valve. With innovative design and precision manufacturing technology at its core, it provides reliable pressure and flow regulation solutions for petrochemical, energy and power, metallurgy, and other fields. It requires no external power source and uses the energy of the medium itself for precise regulation, combining high efficiency, energy saving, stability, and safety for long-cycle operation under demanding conditions.
For the complex demands of high-pressure and large-flow media control in industrial processes, we introduce a new-generation cage-structure self-operated control valve. With innovative design and precision manufacturing technology at its core, it provides reliable pressure and flow regulation solutions for petrochemical, energy and power, metallurgy, and other fields. It requires no external power source and uses the energy of the medium itself for precise regulation, combining high efficiency, energy saving, stability, and safety for long-cycle operation under demanding conditions.
Technical Advantages
01
Multi-stage pressure-reducing cage structure:
The perforated throttling cage design optimizes flow distribution, significantly reduces noise and vibration, effectively suppresses cavitation and flashing, and extends valve service life.
The perforated throttling cage design optimizes flow distribution, significantly reduces noise and vibration, effectively suppresses cavitation and flashing, and extends valve service life.
02
High-precision dynamically balanced valve core:
The balanced valve-core structure offsets medium pressure fluctuation, ensuring stable regulation even under high pressure differential (maximum working pressure up to 40 MPa), with response speed increased by 30%.
The balanced valve-core structure offsets medium pressure fluctuation, ensuring stable regulation even under high pressure differential (maximum working pressure up to 40 MPa), with response speed increased by 30%.
03
Large-flow series:
Ultra-large flow coefficient (Cv value above 2000) and wide valve-body flow passage, suitable for efficient regulation of large-flow media such as natural gas transmission/distribution and chemical plant circulating-water systems.
Ultra-large flow coefficient (Cv value above 2000) and wide valve-body flow passage, suitable for efficient regulation of large-flow media such as natural gas transmission/distribution and chemical plant circulating-water systems.
04
High-pressure series:
Reinforced valve-body materials and sealing structure, suitable for extreme conditions such as supercritical fluids and high-pressure steam (temperature ≤550°C), with pressure resistance 50% higher than traditional valves.
Reinforced valve-body materials and sealing structure, suitable for extreme conditions such as supercritical fluids and high-pressure steam (temperature ≤550°C), with pressure resistance 50% higher than traditional valves.
05
Adaptive pressure feedback:
Built-in high-sensitivity pressure sensing module monitors pipeline pressure changes in real time and automatically adjusts opening, ensuring system pressure fluctuation within ≤±1.5% of the set value.
Built-in high-sensitivity pressure sensing module monitors pipeline pressure changes in real time and automatically adjusts opening, ensuring system pressure fluctuation within ≤±1.5% of the set value.
06
Zero external energy dependence:
Requires no electric or pneumatic assistance, reducing energy consumption and equipment maintenance cost, especially suitable for remote areas or explosion-proof environments (optional ATEX/IECEx certification).
Requires no electric or pneumatic assistance, reducing energy consumption and equipment maintenance cost, especially suitable for remote areas or explosion-proof environments (optional ATEX/IECEx certification).
07
Available in single-seat, double-seat, bellows-sealed, and other structural options, suitable for gas, liquid, steam, and other media.
08
Valve body materials are available in stainless steel, alloy steel, Monel, and other options. Surface hardening enhances wear and corrosion resistance, making it suitable for highly corrosive and high-wear applications.
Technical Highlights
- Dynamic sealing technology: metal hard seal + graphite ring composite structure ensures zero leakage under high pressure differential (leakage class ANSI Class VI).
- Integrated actuator: integrated spring-loaded system and pressure-balancing device, with regulation accuracy of ±0.5%FS and repeatability error ≤0.1%.
- Intelligent diagnostic interface (optional): supports 4-20 mA signal output and HART protocol, compatible with DCS/PLC systems for remote status monitoring and fault warning.
Application Scenarios
• Pressure regulation for long-distance natural gas pipelines
• Reactor feed flow control in refining and chemical units
• Temperature and pressure reduction in power-plant high-pressure steam systems
• Ultra-low-temperature media control at LNG storage and transportation terminals
• Precise diversion of corrosive media in chemical processes