Master Water Conditioning MP-MCA Series, Installation And Operation Manual, Page: 3 / 33

2
MP-MCA Control Valve:
1. When facing the front of the MP-MCA timer, the inlet connection
is located on the right and the outlet connection is on the left.
The control valve's inlet and outlet connections are either 1
”
copper or PVC equipped with split ring and nut.
Front View Top View
2. Turn the control valve upside down and ensure that the control
valve distributor o’ring is in place. Use silicone lubricant on the
o'ring.
**DO NOT USE PETROLEUM!**
**USE ONLY SILICONE **
3. Connect the D1255-03 strainer onto the control valve.
4. Place the control valve onto the distributor pipe and into the tank
opening.
5. Thread the control valve hand tight . Do not overtighten.
5. Locate the bypass valve assembly that is packaged with the
control valve. The bypass valve has two red handles that
indicate flow direction, two threaded connections for the tail
piec
e kit and two o’ring seal connections with nuts for the control
valve. Align the insert connection ends with o’ring seals and
nuts to the inlet and outlet connections of the control valve.
Hand tighten the nuts.
DO NOT OVERTIGHTEN THE NUT!
Control Valve