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      Model SP158.15 

 

       Page 2 of 8 

OPERATION: 

 

The SP158.15 automatically monitors the water temperature within the 8315CTFP shower: 

When water temperature cools to 36

⁰F (2.2°C) or below, the thermostat begins to open the valve and 

water will bleed through the drain.  

When the wa

ter temperature rises to 42⁰F (5.6°C) or above, the valve will close completely.  

 

The valve automatically repeats this cycle as long as water temperature remains low. Bleeding frequency 
increases with colder temperature. The valve flows as much as necessary to prevent system freezing. 

 

FEATURES:

   

 

Fully automatic operation. 

 

Contamination-resistant seat design for drip free closing. 

 

Paraffin thermostat for industry-leading response time and reliability. 

 

SPECIFICATIONS: 

 

Operating Pressure Range:   

Follow 8315CTFP specifications.

 

 

Ambient Temperature Range:   

Follow 8315CTFP specifications.

 

 

Maximum Water Temperature:   165°F 

 

Valve Starts to Open at:  

36°F (2.2°C) 

 

Valve is Fully Closed at:  

42°F (5.6°C) 

 

VALVE PORTS: 

 

Inlet:    Factory-plumbed to 1-1/4

” to interface 

with the 8315CTFP (or SP121). 

 

Outlet:  Factory-plugged; unused. 

 

Drain:    Factory-plumbed to barbed connection 

for 1/2

” ID tubing. 

 
RECOMMENDED TOOLS & SUPPLIES:  

 

Adjustable wrench 

(only for retrofit installations) 

 

Wire cutters 

 

Pipe wrench (and slip-joint pliers, if possible) 

 

Pipe joint sealant 

(Loctite PST #567 recommended) 

 

Serrated knife or saw 

(only for installing without the SP121) 

 

Insulation coating or cladding  

(only needed for severe outdoor exposure to UV)

 

 

LOCATION OF UNIT:

   

 

The Model SP158.15 Freeze Protection Valve is intended for use only with the 8315CTFP series of 
emergency showers, and may be installed as follows: 

As a standalone accessory directly on an 8315CTFP shower, 

OR

 

in conjunction with the SP121 Auxiliary Plumbing Assembly, which allows for various combinations of 
the following:   

 

A recirculation loop through the shower 

 

An SP158.15 valve 

 

An SP145 drench hose 

For a freeze protection valve for use with other showers and eyewashes, please see Model SP158B. 

 

This valve must be accessible for maintenance in its installed position. 
 

INSTALLATION NOTES: 

Installation of this device is the responsibility of the installer and shall be carried out in accordance with the 
instructions in this and other pertinent Haws manuals. 

 

To install the SP158.15 with the SP121 auxiliary plumbing assembly:

  Please consult the SP121 manual. 

 

To install the SP158.15 as a standalone accessory:

  Please use the following procedures. 

 

 

If system shutoff valves are installed for maintenance purposes, make provisions to prevent unauthorized 
shutoff. 

 

Flush water supply prior to installation. 

Summary of Contents for SP158.15

Page 1: ...upon written authority from HAWS Sparks Nevada HAWS will not be liable for any damages caused by defective materials or poor workmanship except for replacements as provided above Buyer agrees that Haw...

Page 2: ...trofit installations Wire cutters Pipe wrench and slip joint pliers if possible Pipe joint sealant Loctite PST 567 recommended Serrated knife or saw only for installing without the SP121 Insulation co...

Page 3: ...iping Carefully clip the zip ties holding this coil together taking care not to damage the heat trace c This extra heat trace will soon be pulled rearward so it can run out the back of the unit Clip t...

Page 4: ...ough the open square cut in the grommet and feed the excess length back within the jacket The heat trace must run along the opposite side of the auxiliary outlet plumbing until it rejoins the vertical...

Page 5: ...errated knife or saw Do not cut off any more than is necessary Place the insulation around the freeze valve assembly noting the opening for the freeze valve drain c Place the new insulation disc into...

Page 6: ...5 After cleaning lubricate all three O rings with an appropriate food grade lubricant such as Dow Corning 111 and confirm that the small O ring is in place 6 Reinstall the thermostat cartridge and ch...

Page 7: ...APPROVED DRAWN PART NUMBER SCALE REVISION JL 09 17 20 2 SP158 15 FREEZE PROTECTION VALVE 1 1 JL 04 19 21 DRAWING TYPE SIZE A 5588 BY BJM PARTS BREAKDOWN DATE DATE REV ECN 5661 CHK D MODEL S 1455 KLEPP...

Page 8: ...AL CODES SHOULD BE ADHERED TO 2021 Haws Corporation All Rights Reserved HAWS and other trademarks used in these materials are the exclusive property of Haws Corporation THIS DOCUMENT IS TRUE AND CORRE...

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