Page 11
UG_RGW_v1.12_EN
WYE FITTING
WYE FITTING
DRAIN VALVE
P-TRAP
OVERFLOW PIPE
TO BUILDING
DRAIN
BACK WATER
VALVE
GREY WATER PIPE FROM
TUBS & SHOWERS
VENT PIPE TO
OUTSIDE
16”
GREY WATER
BYPASS VALVE
PRIMING/
IRRIGATION
FAUCET
IF REQUIRED BY LOCAL CODES.
CROSS CONNECTION
CONTROL DEVICE
BYPASS
VALVE
POTABLE
WATER MAIN
SHUT-OFF
VALVE
6”
GREY WATER
OUT TO
TOILETS
POTABLE
WATER IN
GREY WATER
BYPASS
GREY WATER
OUT SHUT-OFF
VALVE
9.0 System Connections
Figure 5. RGW System Connections
The backwater valve device prevents contamination in the event of a sewage back up.
•
The cross connection control device prevents contamination of the potable water system
•
The freshwater bypass valve provides water to toilets incase of power failure or maintenance.
•
The grey water bypass prevents fixture drains from backing up incase of a filter obstruction.
•
The vent and overflow pipes must be at least the same size as the inlet pipe (maximum 3”)
•
If an optional pre-filter is employed on the grey water in line, an additional overflow between the
•
pre-filter and grey water in tank connection must be installed.
The grey water bypass must be lower than any fixture suppling grey water to the RGW system to
•
prevent fixture backup.
