- Backflow Prevention Device
A backflow prevention device, also known as a check valve, non-return valve or one-way valve is a valve and type of mechanical device designed to permit the flow of a fluid (liquid or gas) in a single direction.
In fire safety, a backflow prevention device can form part of the water supply for an automatic fire sprinkler system, fire hydrant system, fire hose reel systems or fire pumpset system for a building.
An automatic fire sprinkler system alarm valve is a type of backflow prevention device.
References in Australian Standards
According to Australian Standard AS 1851:2012 a the valve seat and gasket for a water supply non-return valve shall be inspected and renewed every five-years.