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temperedwater.com

5330 East 25th St.

Indianapolis, IN 46218
Phone (317) 261-1212

Fax (317) 261-1208

INSTALLATION &

MAINTENANCE MANUAL

Design and specifications subject to change without notice.

Please refer to 

temperedwater.com

 to ensure most

current data sheet and other design solutions. 

CAUTION: When maintaining and adjusting 

the mixing valve, the delivered flushing fluid 

temperature shall be 60°F (15°C) to 95°F (35°C). 

In circumstances where chemical reaction is 

accelerated by flushing fluid temperature, a medical 

advisor should be consulted for the optimum 

temperature for each application.

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.

temperedwater.com/patents

ENG. NO. 8334-A

ASSE 1071 Approved
ASSE Lead Free Certified

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.

Model 911

®

Thermostatic Mixing Valve

Emergency Shower

This installation & maintenance manual covers all 

configurations of the Model 911.

CAPACITIES – MODEL 911

 

Pressure 

Drop 

PSI  5  10 20 30 45

 

Tempered Flow GPM

  25 35 50 60 72

 

Tempered Flow LPM

 

74 

132 

189 

227 

273

BYPASS CAPACITIES – MODEL 911

 

Pressure 

Drop 

PSI  5  10 20 30 45

 

Cold Bypass GPM

 

14 

20 

28 

40 

45

 

Cold Bypass LPM

 

53 

75 

106 

151 

170

8334_911_TH-TI_DRW_NODIMS.pdf

DIMENSIONS

 

Valve 

Number  A N.P.T.  B N.P.T.  C 

E

 

911

 

1-1/4” 

1-1/4” 

11” 

9” 

8”

Dimensions are for reference purposes only. For rough-in dimensions 
please refer to Lawler’s Revit/BIM models found at temperedwater.com.

B

E

D

C

A

A

Maximum Inlet Pressure:

 125 PSI

Recommended Supply Pressure:

 65 PSI

Recommended Inlet Temperature:

 120°F

   When supplying 140°F or greater, additional outlet 

controls should be used.

Set Point:

   85°F

Gallon per minute ratings may vary depending upon 

incoming water temperatures and pressures. Hot and cold 

water inlet pressures must be equal.

Valve must be installed with check valves. If shut off valves 

are installed in the shower line for maintenance purposes, 

provisions shall be made to prevent unauthorized shut off.

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