Where is the backflow preventer installed?
The backflow preventer must be installed horizontally, the installation site environment should be clean, there is enough space for maintenance, safety or drainage device (air blocking device) from the ground of the main export is greater than 300mm, is not submerged in water or sundries.
Tap water network access to the user's home, the pipe behind the meterThe domestic water pipe is connected with non living water and sewage pipe, and is installed at the end of the pipe.The inlet pipe of the drinking water tank (when the tank bottom is flooded).When drinking water pipe is connected in series, the pressure pump is installed on the suction pipe of the pump.
Drainage facilities shall be installed in the installation area.Valve should be installed before the valve (butterfly valve) filter and rubber soft joint (or telescopic device), valve installed after the gate valve (butterfly valve).
