Haws SP158.15 Guide

03/21 Model SP158.15 Page 1 of 8
1455 Kleppe Lane Sparks, NV 89431-6467 [phone] Fax [phone]
E-mail: [email protected] website: www.hawsco.com No. 0510001069 (2)
Model SP158.15
Freeze Protection Valve
INSTALLATION, OPERATION
&
MAINTENANCE INSTRUCTIONS
LIMITED WARRANTY
HAWS warrants that this specific product is guaranteed against defective material or poor workmanship
for a period of one year from date of shipment. HAWS liability under this warranty shall be discharged
by furnishing without charge F.O.B. HAWS Factory any goods, or part thereof, which shall appear to the
Company upon inspection to be of defective material or not of first class workmanship, provided that claim
is made in writing to Haws within a reasonable period after receipt of the product. Where claims for
defects are made, the defective part or parts shall be delivered to the Company, prepaid, for inspection.
HAWS will not be liable for the cost of repairs, alterations or replacements, or for any expense connected
therewith made by the owner or his agents, except 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 Haws has made no other warranties either
expressed or implied in addition to those above stated, except that of title with respect to any of the
products or equipment sold hereunder and that HAWS shall not be liable for general, special, or
consequential damages claimed to arise under the contract of sale.
The emergency equipment manufactured by HAWS is warranted to function if installation and
maintenance instructions provided are adhered to. The units also must be used for the purpose for which
they were intended. This product is intended to supplement first-aid treatment. Due to widely varying
conditions, Haws cannot guarantee that the use of this emergency equipment will prevent serious injury
or the aggravation of existing or prior injuries.
NO OTHER WARRANTIES EXPRESSED OR IMPLIED ARE AUTHORIZED, PROVIDED OR GIVEN BY
HAWS.
NOTE TO INSTALLER: Please leave this information with the Maintenance Department.
SHOULD YOU EXPERIENCE DIFFICULTY WITH THE INSTALLATION OF THIS MODEL,
PLEASE CALL:
1-800-766-5612
FOR PARTS CALL: 1-800-640-4297

03/21 Model SP158.15 Page 2 of 8
OPERATION:
•The SP158.15 automatically monitors the water temperature within the 8315CTFP shower:
o When water temperature cools to 36⁰F (2.2°C) or below, the thermostat begins to open the valve and
water will bleed through the drain.
o When the water 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:
o As a standalone accessory directly on an 8315CTFP shower, OR
o 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
o 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.

03/21 Model SP158.15 Page 3 of 8
Valve Installation (Standalone Accessory Only)
STEP 1: Unboxing & Preparation
The following components are included with this model. Pertinent installation steps are included for reference.
•Plumbing grommet..........................................Step 2
•1-1/4”x 1”reducer...........................................Step 3
•1-1/4”x 4-1/2”nipple........................................Step 3
•Plumbed valve assembly.................................Step 3
•6 zip ties for heat trace.....................................Step 4
•Smaller insulation ring......................................Step 5
•4 zip ties for insulation within jacketing............Step 5
•Larger insulation section..................................Step 5
•2 straps and 2 heads for outer insulation.........Step 5
•Insulation disc..................................................Step 5
•Insulation seam tape........................................Step 5
STEP 2: Auxiliary Outlet
a) Install the grommet in the jacket opening beneath the inlet, pointing the square cuts on the inner diameter
toward the sides of the shower.
b) Locate the coil of extra heat trace in front of the vertical piping. 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 the 1 or 2
insulation zip ties rearward of the heat trace that would prevent routing it in this fashion.
d) Remove and
discard the
insulation disc
over the auxiliary
outlet cap and
discard. The slits
in the insulation
here allow the
insulation to be
folded back –find
the galvanized
cap over the
auxiliary outlet
and remove it with
slip-joint pliers or
a pipe wrench.
Installation Tip: It is easiest to install this valve while installing the 8315CTFP-series shower itself; refer to
the 8315CTFP O&M for details.
If this valve is to be retrofitted into a completed shower, the right-hand section of jacketing at the level
of the eyewash must be removed:
•Peel the black seal trim off of the jacketing flanges in this area.
•Remove the eyewash push flag and the shower handle assembly so the jacket can slide off.

03/21 Model SP158.15 Page 4 of 8
STEP 3: Plumbing
a) Run the heat trace out the grommet from Step 1, situating it within the nearest square cut in the grommet.
b) Connect and seal the galvanized
reducer, and then the galvanized
nipple, to the auxiliary outlet. The
nipple will run through the grommet,
with the heat trace alongside it.
c) Connect and seal the freeze valve
assembly to the end of the nipple.
Point the freeze valve drain fitting
downward.
d) Pressurize the plumbing and check
for leaks.
e) Make sure the heat trace is running
smooth and flat along the new
plumbing, but do NOT zip tie it into
place yet.
STEP 4: Heat Trace
a) Run the heat trace straight and level along the side of the plumbing and freeze valve. Wrap it around the
outlet plug of the freeze valve, then run it straight back along the opposite side.
b) Push the end of the heat trace through 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 shower piping. The excess length beyond this point should run out through the
insulation slit that the extra heat trace originally used. Store this excess length where the extra heat trace
was originally located.
c) Install the heat trace zip ties (found in a bundle of 6) approximately where shown. Use more than the 4
shown if needed. The purpose of these zip ties is to ensure that the heat trace maintains solid
contact with the piping as continually as possible –make sure the heat trace is ideally positioned
before tightening down the zip ties.
WARNING: The heat trace must lay flush against the plumbing, contacting it wherever possible, in order
to transfer the necessary heat into the water. Failure to bring the heat trace into adequate contact with
the plumbing may cause local freezing within the plumbing, risking damage, leakage, and malfunction.

03/21 Model SP158.15 Page 5 of 8
STEP 5: Insulation
a) Place the smaller insulation ring around the bare auxiliary piping within the jacketing, using both the
integral adhesive strips on the insulation to close it up. Be sure this new piece is butted fully against the
factory insulation. Use the insulation zip ties (found in a bundle of 4) to secure the new piece, and to
replace the ones previously cut. Tighten each zip tie only enough to close the insulation around the piping.
b) Note the large radius found on one end of the larger insulation. For this
application, carefully cut the radiused portion away with a serrated 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 the open end of the larger insulation. Apply
the seam tape over it to hold it in place.
d) Use both the integral adhesive strips on the larger insulation to close it up.
Use the insulation straps and heads on the two ends of the larger insulation to
further hold it in place –only tighten the straps enough to close the insulation
around the plumbing (and insulation disc).
e) If the insulation is to be exposed to severe levels of UV (e.g. a rooftop installation), consider applying a
protective coating or cladding (such as K-FLEX 374 or K-FLEX Clad) to the insulation.
f) If desired, connect the valve drain to a drain line.

03/21 Model SP158.15 Page 6 of 8
Cleaning Procedure
CAUTION-Safely turn off the water supply pressure and confirm pressure has been relieved prior to
servicing the valve.
1. Remove the insulation from around the valve.
2. Use an adjustable wrench (or 7/8”hex wrench) to remove the thermostat cartridge located next to the drain
port.
3. Confirm that the very small O-ring (Dash #007, EPDM, Durometer 70) at the top of the cartridge is removed
along with the cartridge. This O-ring is the sealing surface with the stainless-steel plunger and must be
present, clean, and undamaged for the valve to seal properly.
4. Inspect the top of the cartridge for debris/corrosion and clean the small O-ring and the plunger surfaces.
The cartridge may be immersed in cool water if desired.
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 check for room temperature leakage.
7. If the valve continues to leak from the drain at room temperature, the valve may need to be repaired (see
valve repair kit model VRK158B) or replaced.
8. Re-insulate the valve.
TROUBLESHOOTING PROCEDURE
PROBLEM CONDITION
REPAIR CHECKLIST
1.
Valve leaks to drain.
a.
b.
Check tempered water line temperature. If it is over 42⁰F (5.6°C), clean
the valve per the Cleaning Procedure.
Valve may require Repair (VRK158B) or Replacement.
2.
Local freezing within plumbing.
a.
b.
c.
Ensure heat trace is powered.
Check if heat trace is contacting piping in the freezing area.
Consult 8315CTFP troubleshooting guide.
© 2021 Haws®Corporation –All Rights Reserved
HAWS® and other trademarks usedin these materials are the exclusive property of Haws Corporation.

1
2
(INSULATION, ETC. HIDDEN FOR CLARITY)
ITEM DESCRIPTION PART NO.
1
KIT, REPAIR, SP158B
(THERMOSTAT CARTRIDGE)
VRK158B
2
FREEZE PROTECTION VALVE
(INCLUDES VRK158B COMPONENTS)
SP158B
THIS DOCUMENT IS TRUE AND CORRECT AT TIME OF PUBLICATION. CONTINUED PRODUCT
IMPROVEMENTS MAKE SPECIFICATIONS AND MEASUREMENTS SUBJECT TO CHANGE WITHOUT NOTICE.
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 KLEPPE LANE
SPARKS, NEVADA 89431
[phone] FAX [phone]
E-MAIL: [email protected]
WEBSITE: WWW.HAWSCO.COM
JL
ECN:
WHEN ORDERING PARTS, PLEASE
SPECIFY PART NUMBER
SHEET 1 OF 1
0510001069
© 2021 Haws Corporation - All Rights Reserved.
HAWS® and other trademarks used in these materials are the exclusive property of Haws Corporation.
PAGE 7 OF 8

DRAIN CONNECTION;
BARBED FITTING FOR
1/2" ID TUBING
THERMOSTAT
INLET;
1-1/4" NPT
OUTLET;
1/2" PLUG
FACTORY-ASSEMBLED VALVE SECTION
(WITHOUT INSULATION, ZIP TIES,
OR ADDITIONAL PLUMBING)
10"
254mm
33 7/16"
850mm
4 7/16"
112mm
13 13/16"
352mm
FREEZE VALVE
DRAIN CONNECTION
SP158.15 STANDALONE INSTALLATION
(FOR USE IN CONJUNCTION WITH THE SP121,
CONSULT THE SP121 DOCUMENTATION)
8315CTFP SHOWER
(SOLD SEPARATELY)
NOTES:
1. HOLD ROUGH-IN DIMENSIONS ±1/4" (6.4mm).
2. WHEN INSTALLING THIS UNIT, LOCAL, STATE, OR FEDERAL 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 CORRECT AT TIME OF PUBLICATION. CONTINUED PRODUCT
IMPROVEMENTS MAKE SPECIFICATIONS AND MEASUREMENTS SUBJECT TO CHANGE WITHOUT NOTICE.
APPROVED:
DRAWN:
PART NUMBER
SCALE:
REVISION
JL
09/17/20
2
N/A
JL
04/19/21
DRAWING TYPE:
SIZE: A
5588
BY:
BJM
INSTALLATION
DATE:
DATE:
REV. ECN:
5661
CHK'D.:
MODEL(S)
1455 KLEPPE LANE
SPARKS, NEVADA 89431
[phone] FAX [phone]
E-MAIL: [email protected]
WEBSITE: WWW.HAWSCO.COM
JL
ECN:
SHEET 1 OF 1
0510001069.D
SP158.15 FREEZE PROTECTION VALVE
PAGE 8 OF 8
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