Install Instructions

MX SERIES VALVES
33-00033EFS—01 2
Fig. 1. Dimensions of Union NPT model.
Service
To remove dirt, flush valve. To remove calcium and lime
deposits, soak valve in vinegar for 24 hours and flush or
contact factory for assistance. Do not attempt to field
repair this calibrated valve.
Temperature Selection
The MX Series Valves are made in ranges: 113°-149° F
(45°-65° C). The factory setting is 130° F (54° C). Change
temperature setting with an Allen wrench, which is
included; 3/16 for MX127LF or a 5/16 for MX128LF,
MX129LF and MX130LF. Punch through the center of the
temperature range label. By turning the screw clockwise,
the mix temperature increases (counterclockwise, it
decreases). Each complete turn with the Allen wrench
changes the temperature as follows: MX127LF (1 in.);
11° F (6° C), MX128LF (1-1/4 in.), MX129LF (1-1/2 in.)
and MX130LF (2 in.), 7° F (4° C). Do not operate valve at
temperatures outside of its calibrated range of 113°-
149° F (45°-65°). Use a thermometer to verify
temperature.
Fig. 2. Temperature range label.
M23693A
SIZE
SIZE
SIZE
A
D MINIMUM
BA
C
H
C
M
MX127LF-130LF
Table 1. MX Series Valve Models.
Product
Number Size NPT
C
v
Min.
Flow
(GPM)
GPM @
30 psi
Temp.
Range
Weight in
Lbs (kg)
Dimensions in inches (mm)
AB C D
MX127LF 1 in. 4.0 1.0 22 113°-149° F
(45°-65° C)
3.6 (1.6) 2.8 (66) 3.7 (94) 6.5 (165) 6.0 (152)
MX128LF 1-1/4 in. 9.3 2.5 50 6.4 (2.9) 3.3 (84) 4.4 (112) 7.7 (196) 6.9 (175)
MX129LF 1-1/2 in. 13.5 3.5 75 8.4 (3.8) 3.6 (91) 5.0 (127) 8.6 (218) 7.0 (178)
MX130LF 2 in. 18.0 5.0 100 13.1 (5.9) 4.2 (107) 5.8 (147) 10.0 (254) 7.3 (185)
MX 050-RP Recirculation Adapter Kit 0.2 (0.1)
* Union models include 1/2-in. recirculation adapter.
** Flange models recirculation adapter size (MX131LF 1 in. and
MX132LF 1-1/4 in.)
Maximum Temperature:
MX127LF, 128LF, 129LF, 130LF, 131LF, 132LF: 221° F (105° C)
Maximum working Pressure 150 psi (1034 kPa).
Minimum temperature difference between hot and mix
should be 10° F (6° C).
130
113
149
˚F
54
45
65
˚C
M36225