6
BYPASS VALVE OPERATION
The bypass valve is typically used to isolate the control valve from the plumbing
system’s water pressure in order to perform control valve repairs or
maintenance. The 1" full flow bypass valve incorporates four positions including
a diagnostic position that allows service personnel to work on a pressurized
system while still providing untreated bypass water to the facility or residence.
Its completely non-metallic, all plastic design allows for easy access and
serviceability without the need for tools.
The bypass body and rotors are glass-filled Noryl and the nuts and caps are
glass- filled polypropylene. All seals are self-lubricating EPDM to help prevent
valve seizing after long periods of non-use. Internal o-rings can easily be
replaced if service is required.
The bypass consists of two interchangeable plug valves that are operated
independently by red arrow-shaped handles. The handles identify the flow
direction of the water. The plug valves enable the bypass valve to operate in four
positions.
Refer to corresponding Bypass Valve Instructions on the following page.
Figure 1. Normal Operation Position: The inlet and outlet handles point in the
direction of flow indicated by the engraved arrows on the control valve. Water
flows through the control valve during normal operation and this position also
allows the control valve to isolate the media bed during the regeneration cycle.
Figure 2. Bypass Position: The inlet and outlet handles point to the center of the
bypass, the control valve is isolated from the water pressure contained in the
plumbing system. Untreated water is supplied to the plumbing system.
Figure 3. Diagnostic Position: The inlet handle points in the direction of flow and
the outlet handle points to the center of bypass valve, system water pressure is
allowed to the control valve and the plumbing system while not allowing water
to exit from the control valve to the plumbing.
Figure 4. Shut Off Position: The inlet handle points to the center of the bypass
valve and the outlet handle points in the direction of flow, the water is shut off
to the plumbing system. If water is available, on the outlet side of the softener, it
is an indication of water bypassing the system (i.e. a plumbing connection
somewhere in the building bypasses the system).
