The 500X pressure relief valve is mainly used in fire or other water supply systems to prevent system overpressure or maintain the pressure of the fire water supply system. After the fire pump is turned off, the impact of water hammer can be reduced. Also used for water hammer devices in large-scale water supply systems. And a clean filter screen is installed at the inlet of the valve control system, which utilizes fluid characteristics to prevent suspended particles with high density and diameter from entering the control system, ensuring smooth system circulation and safe and reliable operation of the valve. The system operates smoothly, has high intensity, and has a long service life.