Checking Piston and Liner
Remove piston assembly #15 from valve. Check the piston
assembly and liner #21 for cleanliness and excessive wear.
Check hot disc #17 for wear. Replace all worn parts.
Liner #21 can be removed with a 3/8” hex wrench for med &
high flow 1/2” valves.
Before reassembling the valve, thoroughly flush out with
water.
Piston Sub-assembly, consisting of parts #’s 15, 17 and 18,
is factory pre-set with Liner #21, as a single unit.
Use only genuine factory parts for replacement of seat
washers; thickness will affect the operation of the mixing
valve.
When in Need of Information
When writing the factory or one of its representatives in
regard to a mixing valve, be sure to give the valve number
and serial number appearing on round label plate fastened
to the top of the valve.
Repair Kit
Valves can be completely rebuilt in a matter of minutes
without removal from the line by installing a repair kit.
WARNING: This product contains chemicals known
to the State of California to cause cancer and birth
defects or other reproductive harm.
(Installer: California law requires that this warning
be given to the consumer.)
For more information: www.oehha.org/prop65
Thermostatic Mixing Valve Cut-away
9
26
10
5
12
15
25
22
14
21
17
19
7
23
2
18
