Shuaigang Mould Base (Yixing) Co., Ltd , https://www.shmouldbase.comProduct Type 300X slow closing check valve to control the opening and closing speed of the check valve, pump start or stop running, with the scene can be adjusted to the optimal opening or closing speed. Can be used for high-rise buildings, reducing water hammer phenomenon, in order to achieve safe and quiet hoist effect. 00X-type slow closing check valve Product standard pressure rating: PN10, PN16, PN25 Diaphragm: DN20 ~ 50 Piston: DN350 ~ 50 Search Keyword: Yongnian Inoteco Valve Co., Ltd. Check Valve Offers Info