4
3.4
MULTIPORT VALVE INSTALLATION
3.4.1
Top Mount Media Filters are supplied with either a top mounted screw down Multiport
Valve or a clamp down Multiport Valve.
3.4.2
Side Mount Media Filters are supplied with a side mounted Multiport Valve with a
plumbing kit designed to be connected to the side ports of the filter.
3.4.3
Each Multiport Valve is supplied with three threaded barrel unions.
3.4.4
Check that the top of the filter is free from any filter media or debris, and if there is a
valve o-ring, check that the valve o-ring is in place.
3.4.5
Check the label of each valve port and position the valve accordingly. The PUMP port
must be plumbed to the pump discharge, the WASTE port must be plumbed to the
waste line, and the RETURN port must be plumbed to the return line.
3.4.6
(a) Top Mount Screw Down Multiport Valve
- Rotate the Multiport Valve into the filter
vessel’s threaded connection.
3.4.7
(b) Top Mount Clamp Down Multiport Valve
– Align the valve with the top of the tank
flange. Place the coupling clamp half over the valve flange and the tank flange. Insert
the screws and nuts in the coupling clamp jaws, ensuring that the nuts are located in
the retainer slots on the clamp jaws. Tighten the clamp screws firmly and check that
the valve, tank flange and coupling clamp are correctly assembled.
3.4.8
(c) Side Mount Multiport Valve
– Align the Multiport Valve’s plumbing kit with the
filter’s threaded connection ports. Screw the plumbing kit’s barrel unions onto the filter
connection ports, and hand tighten. Do not overtighten the barrel unions, as this can
lead to damage and void the product warranty.
3.4.9
Screw the Multiport Valve barrel unions onto the threaded connection ports of the
Multiport Valve and hand tighten. The barrel unions should be firmly threaded into the
Multiport Valve, and there should be no play between the thread. Do not overtighten the
barrel unions, as this can lead to damage and void the product warranty.
3.4.10
Glue the PVC pipe to the barrel unions and allow the glue to set as per the manufacturer’s
instructions before starting the filter.
3.4.11
Test the filter and check for leaks around the threads.
4.0
MULTIPORT VALVE OPERATION
Fig.2
Multiport Valve Handle diagram.