18
4.5
4-Function Valve Installation
• To mount to a pump, remove the discharge fitting from the pump
(if present) leaving the cartridges in the pump head. Position the
4FV coupling nut on pump head over cartridges with threads up,
and insert 4FV fitting and thread into pump head over cartridges.
Tighten the fitting to 50 in-lbs using a 13/16” or 20 mm socket. Insert
the large opening on the 4-Function valve into the 4FV coupling nut
and hand tighten. You can position the valve to have the pressure
relief port in any convenient location by tightening the 4FV coupling
nut with the pressure relief port positioned 90º CCW from desired
location, then holding the nut stationery while turning the valve the
final 90º to desired position.
• Connect 1/4” tubing to the pressure relief port and route to supply
container.
• Connect discharge line using LMI tubing connection system or 1/2”
pipe thread.
The 4-Function Valve is designed for double¬ballchecks. A second
valve cartridge is required when mounting a new 4-Function Valve
to an existing pump with a 300, 400 or 700 liquid end.
4-Function Valve Tubing Connection
