Description
Slow shut off check valve is used at outlet pipe of pump, with its open & close speed adjustable, and also used at high building for reducing water hammer & water slamming.
The valve is an intelligent valve intended for installation in the pump outlet of a high-rise buildings' water supply system. When uses it effectively prevents the reverse flow of a medium, as well as water hammer-type phenomena. This valve utilizes electronic 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 valves 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.
Standard and regulation
Flange connection dimension: GB/T 17241.6-1998, GB/T 9113.1-2000
Nominal pressure: PN0.6MPa, PN1.0MPa, PN1.6MPa, PN2.5MPa
Nominal diameter: DN20゛450mm
Suitable medium: Water
Suitable temperature: ＋80≧
Inspection and test: GB/T 13927, API598
Body material: Cast iron, Ductile cast iron |
