User Guide

2
FullFloXF
™
Backwash Valve Installation and User’s Guide
Installing the Valve onto the Filter
1. Turn off all power to the system.
For retrofit installations only, follow steps a-d.
For new installations, proceed to Step 2.
2. Place O-rings on the face of the union fittings,
where the face of the backwash valve union will
connect to the filter bulkheads. Be sure O-Ring is
seated into the groove of each union piece.
3. Holding the valve upright, place onto the filter
bulkheads. Tighten both union nuts to secure the
valve on the filter.
4. Plumb the discharge of the pump into the valve
inlet labeled FILTER INLET.
5. Plumb the valve outlet labeled FILTER OUTLET
to the heater or pool return lines.
6. Plumb the WASTE ports as needed. Let the
system dry for 24 hours.
a. Open the pressure relief valve on the top of
the filter. Stand clear while air is released from
the system.
b. If the filter is below pool level, close the suc-
tion and return line valves to isolate the filtra-
tion system.
c. Remove the drain plug from the filter to drain
the water from the filter.
d. Remove existing valve from the filter.
Backwashing
1. Turn off all system pump(s).
2. Release all pressure from the system at the
main filter.
3. Turn the valve handle to the BACKWASH
position.
4. Turn on the system pump(s) and run the system
until the water runs clean.
5. Turn off all system pump(s).
6. Return the valve handle to the FILTER position.
7. Turn on system pump(s) and check for normal
water flow.
Normal Operation
1. Be sure the valve handle is pointing towards FILTER.
2. Turn on the filter pump. Check the system for
normal water flow.
To Waste
OFF
3-Way Valve
Spa Pool
Pump Outlet
(Pool Return)
Pump Inlet
(From Pump)
Backwash Valve
Filter
Filter Pump
Normal Operation
Union Nut
1
3
2
4
XF Union Installation
Union Nut
Retainer
Ring
Adapter
Sta-Rite Union Installation
O-Ring
1. Piping size: 2-1/2” or 3” CPVC/PVC pipe fittings -
can be plumbed directly into valve port socket. 3”
plumbing requires a 3” coupling or 90° elbow slipped
over the valve port spigot. (Also can be used with
any size PVC plumbing with appropriate adapters).
Note: Be sure that no glue enters inside of valve
body past the ports. The recommended pipe glue
to use is WELD-ON
®
724 CPVC, GRAY or glue
types such as WELD-ON
®
790
™
MULTI-PURPOSE
SOLVENT CEMENT.
2. Support piping in such a way that strain is not
placed on the valve or filter.
3. The maximum operating pressure of this valve is
50 psi. The filter unit also has a maximum operating
pressure listed on the filter nameplate.
Important Installation Guidelines