Specification
Series LF70A
Hot Water Extender
Tempering Valves
Sizes:
1
⁄2" -
3
⁄4" (15 - 20mm)
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" (15 and 20mm) sizes, with sweat or threaded connections.
Temperature range 120° to 160°F (49° 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"
(20mm) 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 construc-
tion that is recognized and required to resist corrosive domestic hot
water conditions. The LF70A features Lead Free* construction to
comply with Lead Free* installation requirements.
No. LF70A-F furnished in
1
⁄2" and
3
⁄4" (15 - 20mm) size with sweat
connections.
No. LF70A-T in
1
⁄2" and
3
⁄4" (15 - 20mm) threaded connections.
Series LFL70A
Identical to above except furnished for low temperature range
applications between 100° to 130°F (38° 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" (15 - 20mm) 2 8
NOTE: 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 without prior notice and without incurring any obligation to make
such changes and modifications on Watts products previously or subsequently sold.
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.
For Residential and Commercial Applications
ES-LF70A
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LEAD FREE
*
* The wetted surface of this product contacted by consumable water
contains less than one quarter of one percent (0.25%) of lead by
weight.
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 stan-
dard 1016 devices are required. These Watts valves should never be
used to provide “anti-scald” or “anti-chill” service.
WARNING
!
No. LF70A-T
Threaded Connections
No. LF70A-F
Sweat connections