ZURN TEMP-GARD III Z7300 Series Operation / Installation Instruction Download Page 2

10.  Assemble external trim to valve.

Hand tighten escutcheon nut (20) on valve.

Remove tape from gasket (15) and adhere gasket (centered on the top half of the back of cover

 plate (16)) so that 1/4 of the width of the gasket is sticking out beyond the back of the cover plate, see
 Figure 2.

Place cover plate over escutcheon (19) and fasten with screws (18).

Install handle onto cartridge with handle pointed down. Tighten set screw.

The ZURN TEMP-GARD III Pressure Balancing Shower Valve is equipped with an adjustable temperature limit stop. The temperature
limit stop device is to be used to limit the valve handle from being turned to undesired hot water discharge temperatures. To adjust the
temperature limit stop, see step 8 of the installation and reference figure 3.

IMPORTANT: Failure to adjust the temperature limit stop properly increases the chances for serious injury.

WARNING: This shower system may not protect the user from scalding when there is a failure of other
temperature controlling devices elsewhere in the plumbing system.

Notes:

When there is a shutoff valve installed after the control valve, there shall be stop and check valves on the inlets. This is to
eliminate hot and cold cross-connection in the event the valve handle is left on. Specify suffix "-SC" for ASSE approved
checks.

If valve is going to be installed in “Thin Wall Application” such as a fiberglass or panel wall, it is recommended
that an optional wall flange (RK7300-WF) be used. This wall flange is used to sandwich the wall between the
valve body and cover plate.

OPERATION:

The main handle of the Temp-Gard III valve is for temperature control only. To turn valve on, the handle is turned
counterclockwise through the cold position, to the warm and then to the hot position. The range of motion on the
handle is 140

o

.

MAINTENANCE and SERVICE:

1. Remove handle (21) and cover plate (16).
2. Using a flathead screwdriver, turn both service stops (7) clockwise until they bottom out. This allows

the valve to be serviced without turning off the main water supply. If service stops need to be repaired
or replaced, the main water supply must be turned off and the service stop retainer (9) must be
removed by turning counterclockwise.

3. Remove escutcheon nut (20) and escutcheon (19).
4. Remove cartridge (10) by placing thumb and forefinger where shown in figure 4 and carefully wiggling

cartridge. 

Caution: If cartridge is not removed in manner described damage may occur to cartridge.

FIGURE 3

FIGURE 2

Cover Gasket:

Position gasket in back side of cover with the adhesive
against the cover and the open end at bottom as shown.

TEMPERATURE
LIMIT STOP

Adjusting Temperature Limit Stop:

Lift and turn temperature limit stop clockwise to reduce
maximum temperature.

15

Form #

 CF1024

Date:

 12/16/11     SHT 2 OF 4

C.N. No.

 128417

Rev.

  G

Summary of Contents for TEMP-GARD III Z7300 Series

Page 1: ...lve 7 If hot and cold supply inlets are reversed simply remove cartridge and reinstall with cartridge flipped 180o The handle adaptor 12 will need to be readjusted To adjust handle adaptor remove and turn 180o Handle should always turn through cold then hot Reinstall cartridge and tighten escutcheon to 150 in lbs The system will need to be flushed again before installing shower heads 8 To adjust t...

Page 2: ...checks If valve is going to be installed in Thin Wall Application such as a fiberglass or panel wall it is recommended that an optional wall flange RK7300 WF be used This wall flange is used to sandwich the wall between the valve body and cover plate OPERATION The main handle of the Temp Gard III valve is for temperature control only To turn valve on the handle is turned counterclockwise through t...

Page 3: ...s are open Valve will not operate unless both HOT and COLD water inlets have pressure Water volume from valve is Pressure balancing piston housed in Remove and service cartridge as inconsistent during operation cartridge 10 assembly is blocked described in steps 1 through 6 from free movement by foreign of the MAINTENANCE and SERVICE matter section Valve delivers an insufficient quantity of Hot or...

Page 4: ...p Plunger 4 Spring 5 Stem O Ring 6 Service Stop Roll Pin 7 Service Stop Stem 8 Retainer O Ring 9 Service Stop Retainer RK7300 WF WALL FLANGE KIT OPTIONAL ITEM NO 14 Wall Flange RK7300 LH LEVER HANDLE KIT ITEM NO 21 Handle 22 Set Screw RK7300 11AE 001 COVER SCREWS KIT 2 PER ITEM NO 18 Cover Plate Screw 3 RK7300 EXT EXTENSION KIT OPTIONAL ITEM NO 26 Escutcheon Extension 27 Set Screw 28 Stem Extensio...

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