This valve is primarily utilized in pipeline systems to prevent system overpressure or to maintain a stable upstream baseline pressure. When a pump shuts down, it also functions to reduce water hammer impacts. Additionally, it can be deployed as a water hammer elimination device in large-scale water supply networks.

The inlet of the valve's pilot control system is equipped with a self-cleaning strainer. Utilizing fluid dynamics, it prevents suspended particles with higher specific gravity or larger diameters from entering the control piping. This ensures that the upstream supply pressure of the main valve is held at a specific pre-set value, maintaining smooth and unobstructed system circulation. The valve is characterized by sensitive opening and closing, high safety and reliability, smooth action, and an extended operational service life.

Core Dual-Functional Applications

• Pressure Relief Mode (Overpressure Protection): When installed on a bypass line, the valve acts as a rapid relief mechanism. If the pipeline pressure exceeds the safe pre-set threshold, the valve opens instantly to vent the excess pressure, protecting the network from bursting.

• Pressure Sustaining Mode (Main Upstream Pressure): When installed on the main line, it ensures that the upstream pressure does not drop below a critical minimum set point. This guarantees sufficient pressure for upstream users and critical equipment, preventing system drawdown.