Mounting
TOP VIEW
Installation Diagram
Valve 1 Valve 2
Fuel tanks above filter
head pressure should not
exceed maximum PSI of filter.
Fuel Tank
(Pressure Side Installation)
Install a shut-off valve when
fuel tank is higher than filter
Fuel tank below filter
lift should not exceed 4 inHg.
Fuel Tank
(Ideal Vacuum
Side Installation)
Fuel Tank
(Vacuum Side Installation)
Install a check valve
(with light or no restriction) when
tank is lower than filter to
main prime.
Pressure Side:
Fuel transfer pump not to exceed maximum
PSI or flow rate of filter.
Not ideal - pumps emulsify water hindering
filter performance.
Fuel transfer pump
(IDEAL vacuum side installation)
Engine
Maintain a service clearance below filter
assembly of at least 2 in. (5.1 cm)
Valve 3
Optional Bypass Installation and Operation
(allows user to service filter without shutting down engine.)
Valves 1 2 3
Unit On-line Open Open Closed
Unit Off-line Closed Closed Open
Suction (vacuum) Side:
Primary (first) filter - use 30 micron.
If it is the only filter in the system,
use 2 or 10 micron.
3/8 in. (8 mm) diameter clearance for fasteners.
2.25 in.
(5.7 cm)
445R:
8.5 in. (21.6 cm)
460R:
10.2 in. (25.9 cm)
490R:
11.0 in. (27.9 cm)
4120R:
14.2 in. (36.1 cm)
Vent Plug
Hand actuated
primer pump
OUT OUT
IN
IN
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