Background
The new-generation energy-efficient magnetic levitation centrifugal air compressor, featuring contactless rotor operation via magnetic bearings to eliminate friction, is widely used in electronics, pharmaceuticals and other high-cleanliness industries. Precise air pressure regulation is key to its efficiency and stability, and the GRAT Electric Butterfly Valve—with rapid response and accurate flow control—serves as the ideal actuator for its pressure control system, ensuring stable operation under optimal conditions.

Operating Conditions
- Industry: Compressed Air Systems
- Product:
- Application: Magnetically Suspended Centrifugal Air Compressor
- Medium: Clean Compressed Air
- Valve Material: CF8 Stainless Steel
- Seat Seal: Reinforced PTFE
- Temperature: -10°C to +80°C
- Nominal pressure: PN1.0-1.6 MPa
- Control Signal: Regulation 4-20mA / 0-10V
- Control Accuracy: ±0.5%
- Repeatability Accuracy: ±0.2%
Product Advantages & Features
The GRAT Electric Butterfly Valve is designed for the specific demands of magnetically suspended centrifugal compressors and offers the following core technical advantages:
- Precise Regulation Capability: Utilizes high-precision positioning technology, achieving control accuracy of ±0.5%, ensuring stable compressor discharge pressure within the set range. This Electric Butterfly Valve delivers reliable performance.
- Rapid Dynamic Response: Features an optimized valve structure combined with a high-performance actuator, achieving full-stroke response time of less than 4 seconds to promptly adapt to load fluctuations.
- Energy-Efficient Design: Incorporates a streamlined disc and low-flow-resistance passage design, with a flow resistance coefficient below 0.1 in the fully open state, effectively reducing system energy consumption.
- Smart Integration Features: Supports 4-20mA/0-10V standard signals for seamless integration with compressor control systems, enabling precise remote monitoring and regulation of the Electric Butterfly Valve.

Application Benefits
- Significant Energy Efficiency Improvement: Through precise pressure control, this Electric Butterfly Valve helps maintain the compressor’s optimal operating conditions, achieving average energy savings of 8%-12%.
- Enhanced System Stability: The rapid response to load changes effectively suppresses pressure fluctuations, ensuring stable compressor operation.
- Reduced Maintenance Costs: Simplifies system structure and reduces auxiliary equipment, decreasing maintenance workload by approximately 50% compared to traditional solutions.
- Long Service Life: Rigorous testing confirms a service life exceeding 1 million cycles under continuous regulation conditions, demonstrating the proven reliability of this Electric Butterfly Valve.

As magnetically suspended centrifugal compressors evolve towards higher efficiency and greater intelligence, GRAT will continue to optimize the control algorithms and material technology for the Electric Butterfly Valve. We remain committed to the “Simple & Reliable” technical philosophy, considering “Customer Value” as the fundamental starting point for technological innovation. We are dedicated to providing smarter, more efficient, and more reliable airflow control solutions, including advanced Electric Butterfly Valves, for the global compressor industry, supporting industrial energy conservation and smart manufacturing upgrades.

