Series 911
®
E/F
Emergency Eye Wash Valve
(1)
Installation &
Maintenance Manual
M EFV D
PAT. NO. 5,011,074.
PAT. NO. 5,379,936.
Setting the Mixing Valve
Caution: When maintaining and adjusting the mix-
ing valve, all fixtures should be isolated from use.
Lawler Manufacturing Co., Inc. recommends that
you work safely at all times and in a manner con-
sistent with the OSHA Lock/Tagout standard, 29
CFR 1910.147 and other applicable standards.
This mixing valve has been set at the factory
to deliver 85°F outlet flow. Should the valve require
adjustment, or an application require a different set
temperature, proceed as follows:
1. Contact the proper medical and safety authorities
to determine the correct water temperature for
the specific application (ie. chemicals).
2. Remove the rounded cover nut on front of the
valve body.
3. Create a draw on the mixing valve by opening a
downstream eye wash fixture.
4. Insert a
5
/
32
″
allen key into the stem opening of
the valve and seat in the adjustment screw (not
shown). Set the outlet temperature by turning the
adjustment screw clockwise to reduce tempera-
ture, counterclockwise to increase temperature.
Use the dial thermometer to measure the outlet
temperature.
5. Replace rounded cover nut.
Operating Principle
This Series 911 Emergency Eye Wash/Face Wash
mixing valve is made of a thermostat element with
a stainless steel sliding piston and liner housed in a
bronze casting. The thermostatic cartridge responds
to temperature changes in the hot and cold water
supplies. In the event the thermostatic element fails
or the hot water supply fails, the valve will provide
full cold water bypass flow.
Note: 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.
Caution: When maintaining and adjusting the mix-
ing valve, the delivered flushing fluid temperature
shall be 60°F (15°C) to 95°F (35°C). In circum-
stances where chemical reaction is accelerated
by flushing fluid temperature, a medical advisor
should be consulted for the optimum temperature
for each application.
www.lawlervalve.com
CAPACITIES – MODEL 911E/F
Pressure Drop PSI
5
10
20 30 45
Tempered Flow
2
3
5
7
10
Cold Water Bypass
1
2
4
5
7
30
40
50
60
70 80
90
110
120
130
5330 East 25
th
Street
Indianapolis, Indiana 46218
Phone (317) 261-1212
Fax (317) 261-1208
