10
S
Y
S
TEM C
OMPONENT
S
PRIMAR
Y INSPECTION
INS
TALLA
TION
OPERA
TION
PRIMING
C
ONTR
OLLER
C
OMMISSIONING
MAINTENANCE
REV03121080011217
O
VER
VIEW
Plumbing
Use proper quality, approved fuel line materials with at least 1/2” inner diameter on the suction side from the tank and at least
1/2” inner diameter on the return/discharge side back to the tank.
Note: Do not put any stress on plumbing of SFM 1080, and use a backing wrench when connecting the external plumbing.
The pick up tube/line(s) should originate from the lowest point of the tank to ensure all water is removed, connected directly
to the system’s “PUMP INLET – SUPPLY FROM TANK” port located on the left hand side of the enclosure, and kept as
short as possible. It is recommended to install an oversized, low restriction foot valve to keep the system primed, especially
if the “PUMP INLET – SUPPLY FROM TANK” port of the system is located above the lowest possible fuel level in the tank.
A priming tee should be installed on the highest point of the suction line to be able to easily prime the lines and system.
The return line should be plumbed to the “PUMP OUTLET – RETURN TO TANK” port (on the right side of the system) and
enter the tank as far as possible from the pick up tube, close to the tank bottom. A (swing) check valve may be required on
the return line on some installations to prevent back flow pressure.
Ball valves should be installed on both the inlet and the outlet of the system to isolate the system during servicing.
Anti-Siphon or other external plumbing devices may be required – please check local regulations/code.
The system capabilities are maximum 12” HG pump inlet vacuum. Keep suction plumbing short and straight with as little as
possible restrictions. For continuous optimal performance, make sure suction and discharge lines are free and that nothing
is blocking the flow of fuel and that the suction line always stays primed.
Note: Plumbing installation
must be in accordance with all applicable federal, state, and local rules, laws, standards, and
regulations.
Typical Plumbing / Above Ground Tank Installation (Schematically)
INS
TALLA
TION
