Backflow valve
The backflow valve is a mechanical device that is designed to prevent water back flow and is designed to protect the drinking water supply system.
BACKFLOW VALVE
A device usually installed inside a building used for swapping a sprinkler distribution system to prevent drinking water from backflowing.
DOUBLE BACKFLOW VALVE
A device usually installed inside a building used for swapping a sprinkler distribution system to prevent drinking water from backflowing.
