* With the opening and closing speed control check valve, start or stop the pump when in operation, can be adjusted to best fit the scene opening or closing speed. 

Can be used in high-rise buildings, and the sound of water to reduce water hammer phenomenon, to achieve the effect of a quiet close. 

· Pressure Rating: PNl10, PN16, PN25 

· Diaphragm: φ50mm-φ500mm