Installation &
Maintenance Manual
M61E
PAT. NO. 5,011,074.
-1-
Performance
The Series 61 will maintain outlet temperature to within
3°F under any of the following conditions, providing
the recommended minimum flow and minimum supply
temperature differentials are not exceeded:
• reduction to minimum flow (
1
/
2
or 1 GPM)
• 30°F change in hot water temperature
• 30°F change in cold water temperature
• 30% drop in inlet supply pressure
Maximum Inlet Conditions
Pressure: 125 psig
Temperature: 200°F
Recommended Conditions
Minimum Flow
1 Gallon Per Minute for 61-25
1
/
2
Gallon Per Minute for 61-10 & 61-15
Minimum Temperature Differential
Hot and cold water inlets must have a minimum
20°F differential from the outlet set temperature.
Three-Way Protection
Three-Way protection is provided with Lawler’s pat-
ented backseat.
1. Thermostat Protection.
Lawler’s exclusive design cuts water flow if the
thermostat’s liquid motor fails.
2. Hot Supply Protection.
Responds automatically if the hot water supply
is interrupted, or temperature changes.
3. Cold Supply Protection.
Guards against scalding if the cold supply is in-
terrupted.
Lawler Thermostatic Valves adjust for changes in
both input temperature and pressure, maintaining
constant output.
Caution:
When maintaining and adjusting the
mixing valve, all fixtures should be isolated from
use. Lawler Manufacturing Co., Inc. recommends
that you work safely at all times and in a manner
consistent with the OSHA Lock/Tagout standard,
29 CFR 1910.147 and other applicable standards.
Series 61
NOTICE!
No mixing valve will work satisfactorily if improperly installed. We suggest, therefore, that you read these
instructions carefully before installing and follow directions as outlined. Handle the mixing valve with care.
Tempered
Water Out
Cold Water In
Hot Water In
www.lawlervalve.com
A
B
Valve No. N.P.T. N.P.T. C
61-10
1
/
2
″
1
/
2
″
8
1
/
2
″
61-15
1
/
2
″
1
/
2
″
8
1
/
2
″
61-25
3
/
4
″
3
/
4
″
8
5
/
8
″
DIMENSIONS:
5330 East 25
th
Street
Indianapolis, Indiana 46218
Phone (317) 261-1212
Fax (317) 261-1208
C
A
A
B
ASSE 1017 Approved
C
®
U P C
Certified to
CSA B125.3
