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used with a short piping section to direct the
flushed sand away from the base of the filter. See
Figure 3.
3. Rinse the internal piping to remove the sand.
D. Remove the Internal Piping Assemblies
From the Filter
1. Slide the vent screen and grommet from the end of
the tubing extending above the diffuser. See
Figure 4.
2. Pull the tubing out of the bottom of the diffuser.
3. Unscrew the diffusers from the inlet piping
assembly.
4. Cut the cable tie that secures the piping.
5. Remove the hex head screws that connects the hub
pipe subassembly to the outlet pipe subassembly.
Disconnect the hub pipe subassembly from the
outlet pipe subassembly.
Flush Out Sand
Through Large Fitting
Unscrew
Universal
Coupling Nut
Drain Screen
O-Ring
Large Fitting
For Sand Flushing
O-Ring
Univeral Tailpiece (Not Included)
Universal
Coupling Nut
Short Piping to Direct
Flushed Sand Away
From Filter Base
Figure 2. Sand Flushing Fitting
Figure 3. Universal Tailpiece Connections
Hub Pipe
Subassembly
Vent Screen with
Rubber Grommet
and Tubing
Diffuser
Hex Head
Screws
Outlet Pipe
Subassembly
Wye
Subassembly
Inlet Pipe
Subassembly
Hub and
Laterals
Diffuser Pupe
Subassembly (2)
Diffuser
Cable Tie
Compression
Fitting
Figure 4. Piping Components
Hold fitting when
removing or
installing drain cap
1 1/2” NPT Water
Drain Cap
Figure 1. Water Drain Cap
6. Unscrew the outlet pipe subassembly from the tank
outlet fitting.
7. Remove the hex head screw that connects the
wye subassembly to the inlet pipe subassembly.
Disconnect the wye subassembly. The complete
wye assembly with the two (2) diffuser pipe
subassemblies may now be removed through the lid
opening at the top of the filter.
8. Lift the hub pipe subassembly through the lid
opening at the top of the filter and unscrew seven
(7) of the eight (8) laterals from the hub. Remove
the pipe assembly, hub and laterals for the filter.
9. Unscrew the inlet pipe subassembly from the tank
inlet fitting.