SHALLOW WELL DISCHARGE PIPING (FIGURE 2)
The arrangement shown is typical and suitable for any
pipe material, but all components shown are not required
for proper use. The gate valves save draining the entire
system when servicing the pump or pressure tank. There
should be unions or other breakable pipe connections
close to the pump to allow for easy accessibility when
servicing. If the side discharge ports in the pump case
are used for discharge plumbing then the top discharge
port can be used for priming. If the top port is used for
discharge plumbing, a plumbing tee may be required to
provide a priming port for the system.
DEEP WELL TWIN PIPE INSTALLATION (FIGURE 3)
TWIN PIPE SUCTION PIPING
A twin pipe jet assembly is used on wells 4” and larger.
Franklin Electric’s twin pipe injector requires a minimum
1¼” suction pipe and minimum 1” drive water pipe. Use
of smaller pipes will increase system pressure losses and
reduce the performance of the pump. Horizontal offset
piping may require using larger suction and drive water
pipe sizes to minimize system pressure losses (see
“HORIZONTAL OFFSET PIPING” above).
TWIN PIPE INJECTOR INSTALLATION
Prepare the twin pipe deep well injector for installation
into the well as outlined in the instructions (document
106581102) provided with the injector kit (ordered
separately). The foot valve strainer can be installed onto
the bottom of a 34’ tail pipe, rather than the bottom of the
injector, to prevent over pumping of a low yield well.
Lower the injector assembly into the well. It should be
set at least 3’ below the lowest dynamic water level if you
are not using a tail pipe below the injector. The foot valve
strainer should be no closer than 3’ from the bottom of
the well.
Priming will be easier if you fill the pipes with water
before attaching the pump. Make sure that all piping
slopes upward towards the pump and that no point is
above the pump suction. Connect the suction and drive
water pipes to the threaded connections on the pump
suction flange. Always double clamp barbed connectors.
Go to “DEEP WELL DISCHARGE PIPING” below.
DEEP WELL PACKER INSTALLATION (FIGURE 4)
PACKER SUCTION PIPING
Packers use the area between the ID of the 2” well
casing and the OD of the 1¼” suction pipe as the drive
water (pressure) piping. The ID of the 2” well casing
must be smooth and clean to insure a good seal with the
packer leathers. Turned couplings should be used for
the 1¼” suction pipe to increase clearance between the
ID of the 2” well casing and the coupling, and reduce
pressure losses in the drive water piping.
PACKER INSTALLATION
Prepare the packer for installation into the well as
outlined in the instructions (document 106581102)
provided with the packer kit (ordered separately).
Unions
Pump & Motor
Assembly
1-1/4
”
Suction Pipe
Sanitary Well Seal
4
”
or Larger Well Casing
Twin Pipe Injector
1
”
Drive Pipe
Optional Tail Pipe
Foot Valve
Unions
Pump & Motor
Assembly
1-1/4
”
Suction Pipe
1
”
Drive Pipe
Well Adapter
2
”
Well Casing
1-1/4
”
Suction Pipe
2
”
Packer
Foot Valve
Optional Tail Pipe
Pressure Switch
Union
Service Pipe
Gate Valve
Pressure Tank
Pump & Motor
Assembly
