The ZYC self-operated differential pressure control valve is an automatic regulating valve that operates without external power, relying on pressure variations within the controlled system. Its core function is to stabilize and control the pressure difference between the protected loop (e.g., user heating systems, air conditioning terminal equipment) and the main system pipeline within a preset range. When system pressure fluctuates, the valve automatically adjusts its opening degree through deformation of the internal pressure-sensitive diaphragm, dynamically regulating the flow resistance to absorb excess pressure head. This ensures terminal equipment operates under safe and stable pressure conditions, preventing hydraulic imbalance, noise, and equipment damage. As a critical self-control component, this valve enables dynamic hydraulic balance in closed-loop water systems such as centralized heating and central air conditioning, ensuring efficient and stable system operation.

ZYC selfforce differential pressure control valve Product Diagram

1. Self-powered operation without external energy: The valve relies entirely on the medium pressure within the controlled system for actuation and regulation, eliminating the need for additional power, gas, or controllers. This design achieves energy efficiency, reduces initial investment and operational costs, while enhancing system reliability.

2. Accurate pressure differential control and stability: The system features a high-sensitivity pressure-sensitive diaphragm and actuator for rapid response to pressure variations. By adjusting the set knob, the required constant pressure differential can be precisely set and locked, ensuring high control accuracy. This effectively absorbs pressure fluctuations in the pipeline network, providing a stable operating environment for end-user equipment.

3. Wide operating range and excellent shut-off performance: The valve features a broad adjustable pressure differential and flow range, making it suitable for diverse industrial applications. Moreover, it ensures reliable closure at the preset lower pressure differential limit, providing reliable shut-off capability.

4. Compact structure with easy installation and debugging: The valve body features a compact design, typically employing flange connections for convenient installation. The pressure differential value can be mechanically adjusted directly via the top adjustment knob, eliminating the need for complex calculations or specialized tools. The debugging process is simple and intuitive.

5. Simple maintenance and reliable operation: The main moving parts are integrated within the valve cover diaphragm head, isolated from the medium, with strong anti-fouling capability and long service life. Low failure rate, virtually maintenance-free, providing long-term reliable protection for the system.

ZYC selfforce differential pressure control valve Structure Diagram

List of Component Names and Materials

Performance Specification Sheet

Standard requirements for external dimensions

1. The structural length of the valve shall comply with the standard of GB/T12221

2. Connecting flanges according to GB/T17241.6 standard

ZYC selfforce differential pressure control valve Outline Diagram

Outline dimension table