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MULTIPORT (4 & 6 Way) VALVE OPERATION
1. Filter - Position for filtration.
Incoming water from the piping system is automatically directed by the Multiport Valve to the top of
the filter bed. As the water is pumped through the filter bed, dirt and debris are trapped by the filter
bed. The filtered water is returned from the bottom of the filter vessel, through the Multiport Valve and
back through the piping system.
2. Backwash - Position for cleaning the filter media.
Water flow is reversed by the Multiport Valve through the filter bed so that water flow is directed to
the bottom of the filter vessel and up through the filter bed, flushing the previously trapped dirt and
debris out the waste line.
3. Rinse - Position for flushing the filter system.
The water flow is directed by the Multiport Valve through the filter bed and out. This process settles
the filter media bed into place and ensures any dirt or debris is rinsed out of the filter, preventing dirt
or debris returning to the Swimming Pool / Spa.
NOTE: This position is not available on 4-Way Multiport Valves.
4. Waste - Position for bypassing the filter bed to waste.
The water flow is directed by the Multiport Valve straight to the backwash outlet, bypassing the entire
filter bed. This Multiport Valve position is used lower the water level or for vacuuming water with high
dirt loads.
5. Re-circulate - Position for bypassing the filter bed to the Swimming Pool / Spa.
The Mulitport valve recirculates water flow directly back to the Swimming Pool / Spa,
bypassing the filter.
6. Closed – Position for closing all flow to the filter.
The Multiport Valve can be closed to enable servicing of pump without draining the water from the
filter. This position is not to be used with the pump operating.
NOTE: This position is not available on 4-Way Multiport Valves.
!
Operation of the Multiport Valve or mode selection is to be always done with the pump switched off.
Waterco Fibreglass Filters
