DZZWP Electric Cryogenic Control Valve Features
1. Integrated Electric Control: The electric actuator features a built-in servo system that can directly receive standard control signals such as 4-20mA or 0-10V, eliminating the need for an external servo amplifier. This provides simple wiring and high control accuracy.
2. Extended Bonnet Anti-Freezing Design: The long-neck bonnet structure effectively lengthens the path for cold conduction, keeping the stuffing box in a higher temperature zone. This prevents the packing from freezing and the valve stem from seizing, ensuring flexible and reliable operation at cryogenic temperatures.
3. Ultra-Low Temperature Materials and Cryogenic Treatment: Key components such as the body, valve plug, and stem are manufactured from low-temperature resistant stainless steel materials like 304 and 316. They undergo deep cryogenic treatment to relieve stress, ensuring low-temperature toughness and dimensional stability at -196°C.
4. High Regulation Accuracy and Reliable Sealing: The valve plug utilizes a top-guided structure, suitable for applications with strict leakage requirements, low pressure differential across the valve, and media with certain viscosity or containing fibrous substances. It offers excellent sealing performance.
5. Multiple Protection Functions: The actuator is equipped with various protection functions, including overload protection, temperature protection, and a compression spring to ensure tight valve shut-off, guaranteeing safe and reliable system operation.