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 36
⁰F (2.2°C) or below, the thermostat begins to open the valve and
water will bleed through the drain.
o
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:
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.