Working principle:
When the medium flows in the specified direction, the valve disc is opened by the force of the medium; When the medium is countercurrent, the flow of the medium itself is quickly closed to prevent the medium from countercurrent.

Technical parameters:
Nominal Model: DN50-DN600
Nominal Pressure: PN16 N25
Applicable Temperature: 0℃-80℃ Applicable Medium: Water
Nominal Pressure: 1.0Mpa-2.5Mpa  Design Standard: JB/T 10674-2006 Test Standard: GB/T 13927-2008