Product Name： H104X adjustable pressure regulator valve piston Product Introduction： Piston adjustable pressure regulator valve is installed on the sub-high-rise building drainage system piping, the inlet pressure is reduced to a desired outlet pressure of specialty valves. The valve according to the energy of life itself will keep Jia outlet pressure setpoint set at that outlet pressure is not due to changes in the inlet pressure and flow rate changes, and the inlet valve control system is equipped with a self-cleaning filter, the use of fluid properties, so larger proportion of larger diameter suspended particles do not enter the control system to ensure smooth circulation, so that the valve can operate safely and reliably. Smooth system operation, high strength, long service life. Piston suitable for more than 450 diameter valve.