用途 User

用于高層建筑或其它供水系統的水泵出口，可以防止介質倒流，而且可以減小水錘現象，以達到安全及安靜的效果。

Water pump outlet for high-rise buildings or other water supply systems can prevent backflow of the medium and can reduce water hammer phenomenon to achieve safe and quiet effect.

特點 Characteristic

可防止水錘和水擊現象的產生，達到緩閉消聲的效果。是能夠調控啟閉速度的止回閥，在水泵啟動或停止運行時，可現場調節至開啟或關閉速度。

Water hammer and water hammer can be prevented to achieve the effect of slow - closing. It is the check valve that can control the opening and closing speed and can be adjusted to the best opening or closing speed when the pump starts or stops running.

原理 Principle

停泵后，介質倒流，閥門上腔壓力大于下腔壓力，閥瓣下落關閉。而控制回水進入膜片上腔的速度，就可以調整閥門的關閉速度，從而達到緩閉的目的。

After stopping the pump, the flow of the medium is inverted, the pressure of the chamber pressure is greater than that of the lower chamber, and the valve is closed.Controlling the speed of the return water to the cavity of the diaphragm can adjust the closing speed of the valve to achieve the purpose of slow closure.

執行標準 Executive standard

法蘭尺寸 Flange dimensions：GB/T 17241.6

試驗檢驗 Test test：GB/T 13927

安裝圖典型 Installation diagram