300X Flow Control Check Valve

This valve is used at outlet pipe of pump with its open and close speed adjustable, and is also used in high buildings for reducing water hammer and water slamming.

The main valve comprises valve body, diaphragm, stem assembly, and seat. The valve is separated by diaphragm into two chambers, up and down. The upper chamber is control chamber, and down chamber is flow through chamber. The valve stem is driven by diaphragm up and down, and driven force comes from the differential pressure taken by two sides of diaphragm.

The 300X slow shut-off check valve is an intelligent valve intended for installation in the pump outlet of a high-rise buildings' water supply system. When in use, it effectively prevents the reverse flow of a medium, as well as water hammer-type phenomena. This valve utilizes a motorized valve, check valve and water hammer eliminator at the same time and can effectively increase the safety and reliability of a water supply system. It integrates such functions as slow opening, fast and slow closing in order to eliminate water hammer, so as to prevent the occurrence of pump-on water hammer and pump-off water hammer. The valve can automatically realize turning on/off according to the operation specification of the pump. By pressing the On/Off button of the pump motor; a large flow and small pressure loss can be achieved. Our slow shut-off check valves are suitable for use with pipes of 600 calibers and below.

Specifications:  
1) Pressure rating: PN10. PN16. PN25/Class150
2) Size range: DN20mm-DN800mm (3/4" �C 32")
3) Test and inspection: GB/T 13927, API598