Instructions / Assembly

Series LF70A
Hot Water Extender
Tempering Valves
Sizes:
1
⁄2" -
3
⁄4"
You can meet various installation requirements with the Watts LF70A
Series Hot Water Extender Tempering Valves. They are available in
1
⁄2" and
3
⁄4" sizes, with sweat or threaded connections. Temperature range 120°F
to 160°F (49°C to 71°C).
The hydraulically-operated thermostat opens a spring loaded check in the
cold water inlet allowing cold water to mix with the hot water.
They have unusually high capacity for their size. For example, the
3
⁄4"
LF70A-T used for smaller domestic and residential requirements, passes over
10 gpm (38 lpm) with a 10psi (69 kPa) pressure drop.
Maintenance is simple too, as the thermostat is easily removed and
replaceable as a unit. Valve bodies are of Lead Free* brass construction
that is recognized and required to resist corrosive domestic hot water con-
ditions. The LF70A features Lead Free* construction to comply with Lead
Free* installation requirements.
No. LF70A-F furnished in
1
⁄2" and
3
⁄4" size with sweat connections.
No. LF70A-T in
1
⁄2" and
3
⁄4" threaded connections.
Series LFL70A
Identical to above except furnished for low temperature range applica-
tions between 100°F to 130°F (38°C to 54°C).
Features
• Lead Free* brass valve bodies
• Simple maintenance thermostat assembly is easily removed and
replaceable as a unit
• “FINGER TIP” Dial adjustment Cap
• Sweat or threaded connections
• Stainless steel springs
For...Small Domestic Water Supply Systems
recommended for Tankless Heater, Water Heater
and Solar Installations in Lead Free* applications
MINIMUM FLOW REQUIREMENTS
TO MAINTAIN SET TEMPERATURE FOR LF70A SERIES
Valve Size gpm lpm
1
⁄2" and
3
⁄4" 2 8
No. LF70A-T
Threaded Connections
No. LF70A-F
Sweat connections
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
ES-LF70A
LEAD FREE
*
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Approval
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Engineer
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*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
NOTICE
Inquire with governing authorities for local installation requirements
The information contained herein is not intended to replace the full
product installation and safety information available or the experience
of a trained product installer. You are required to thoroughly read all
installation instructions and product safety information before begin-
ning the installation of this product.
NOTICE
Watts Hot Water Extender Tempering Valves cannot be
used for tempering water temperature at fixtures. Severe
bodily injury (i.e., scalding or chilling) and/or death may
result depending upon system water pressure changes and/
or supply water temperature changes. ASSE standard 1016
listed devices such as Watts Models LFMMV, LFL111 or
LFUSG should be used at fixtures to prevent possible injury.
The Watts Hot Water Tempering Valves are designed to be
installed at or near the boiler or water heater. They are not
designed to compensate for system pressure fluctuations and
should not be used where ASSE standard 1016 devices are
required. These Watts valves should never be used to provide
“anti-scald” or “anti-chill” service.
WARNING
!
Temperature - Pressure
Max. Temperature: 210°F (99°C)
Max. Pressure: 150psi (10.3 bar)
Engineering Specification