7
Instruction Manual
Figure 7. Four-Function Valve Tubing
Connection
2.5 FOUR-FUNCTION VALVE
INSTALLATION
To install a 4-FV, the 4-FV Fitting and Coupling
Nut should be assembled with the appropriate
cartridges into the discharge port of the pump.
Use a 13/16” or 20 mm socket to tighten fitting.
Tightening to 50 inch-pounds is recommended.
Do not over tighten.
To assemble the Four-Function Valve Body, insert
the large opening on the Four-Function Valve
Body into the 4-FV Coupling Nut and hand tighten.
You can position the valve to have the Bleed Nut
pressure relief port in any convenient location by
tightening the 4-FV Coupling Nut with the Bleed
Nut positioned 90º CCW from desired location,
then holding the 4-FV Coupling Nut stationary
while turning the 4-FV Body the final 90º to desired
position. Next, insert the ¼” tubing through the
Bleed Nut. Ensure that about ¼” (6 mm) of tubing
is protruding through the tip of the Bleed Nut.
Firmly hand tighten the Bleed Nut in the hole on
the side of the 4-FV. This tubing should be routed
back to the supply tank. To ensure proper function
of the priming function, the end of this tubing should
not be submerged in the solution.
THIS RETURN LINE TUBING
MUST BE SECURED TO ENSURE
PUMPED SOLUTION WILL SAFELY RETURN TO SUPPLY.
SECTION 2 - INSTALLATION
