Specification Sheet

For Residential, Commercial and Institutional Applications
ES-LFMMV
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Series LFMMV
Thermostatic Mixing Valves
Sizes:
1
⁄2" – 1" (15 – 25mm)
Series LFMMV Thermostatic Mixing Valves maintain and limit mixed
hot water to a desired, selectable temperature. The LFMMV series
can be set to any temperature between 80°F and 120°F with flow
rates as low as 0.5 gpm and as high as 12 gpm (refer to capac-
ity chart on back). This mixing valve series is listed under ASSE
1017 for valves used in hot water source applications, ASSE 1069
for single-pipe, tempered water applications and ASSE 1070 for
valves used in individual or multiple fixture applications and also
listed IAPMO cUPC. The LFMMVs feature Lead Free* construction
to comply with Lead Free* installation requirements.
The LFMMV-M1 uses a double throttling design to control both the
hot and cold water supply to the mixed outlet. The superior flow
characteristics of this valve provide accurate temperature control
(±3°F) with low pressure drop across the rated flow range. As an
added feature, the LFMMV-M1 series incorporates integral inlet filter
washers and check valves in both the hot and cold water inlets to
protect against cross flow.
The LFMMV-M1 is available with either union thread (-UT), union solder
(-US), CPVC (-CPVC ) Quick-Connect (-QC) or PEX (-PEX) end connectors.
Features
•LeadFree*Brassbodyconstruction
•Solidwaxhydraulicprinciplethermostatassuresdependable
mixing of hot and cold water
•Thermostatcontrolsbothhotandcoldwater
•Solder,threaded,PEXorCPVC,Quick-Connectendconnection
models available
•Adjustmentcapwithlockingfeature
•ASSE1017listed
•ASSE1069listed
•ASSE1070listed
•IAPMOcUPClisted
•Integralfilterwashersandcheckvalves
Specifications
A Thermostatic Mixing Valve shall be installed on the hot water supply
to fixture. The valve shall be ASSE 1017, ASSE 1069, ASSE Standard
1070 and IAPMO cUPC listed. It shall have a Lead Free* brass body.
BodyshallbeconstructedusingLeadFree*brassmaterials.LeadFree*
thermostatic valves shall comply with state codes and standards, where
applicable, requiring reduced lead content. The valve shall include inte-
gralfilterwashersandcheckvalvesandanadjustmentcapwithlocking
feature. The valve shall be provided with solder (-US), threaded (-UT),
CPVC, (-CPVC) Quick Connect (-QC) or PEX (-PEX) union connections.
The valve shall be a Watts Series LFMMV-M1.
Applications
The LFMMV-M1 Thermostatic Mixing Valves are ideal for supply-
ing sinks, baths, showers or lavatories with tempered water. The
LFMMV-M1 valves can be used in residential, commercial and
institutional environments. These thermostatically modulated mixing
valves can be used anywhere preset water temperature is required
for point-of-use installations such as in homes, schools, restaurants,
hospitals, beauty salons, and public restrooms. The LFMMV-M1 is
providedwithanadjustmentcapthatincludesalockingfeature.
The LFMMV-M1 valves should be used prior to the fixture to reduce
the hot water supply to a safe temperature.
Triple Listed!
ASSE 1017,
ASSE 1069 & ASSE 1070
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.
LFMMV-US-M1
LFMMV-QC-M1
!
IMPORTANT!
Water temperatures in excess 110ºF (43ºC) are dangerous and may
cause scalding, severe injury or death! This valve can be adjusted to
deliver water at temperatures exceeding 110ºF (43ºC). Consequently,
when used in an ASSE 1016, ASSE 1069 or ASSE 1070 applica-
tion, the installer must check the mixed water outlet temperature
at the point of use and adjust the Watts Thermostatic Mixing Valve
Series LFMMV to ensure delivery of water at a safe temperature not
exceeding 110ºF (43ºC). Mechanical valves are not fail-safe. Due to
the effects of various water conditions, periodic verification of outlet
water temperature is required.
!
WARNING!
When used in an ASSE 1017 application at the hot water source,
the Watts Thermostatic Mixing Valve Series LFMMV cannot be
used by itself to control final temperature at fixtures where ASSE
Standard 1016 or ASSE Standard 1070 listed devices are required.
Such use may result in severe bodily injury (i.e. scalding or chilling)
and/or death. Additional ASSE Standard 1016, ASSE 1069 or ASSE
Standard 1070 listed devices, such as Watts Series LFUSG, LFL111
or LFMMV, should be used at fixtures to prevent possible injury.
Recirculation systems should recirculate water at temperatures over
140ºF to reduce the risk of bacterial growth in the piping. This valve
should not be used to achieve these elevated temperatures. This valve
canbeusedatfixturesinconjunctionwithrecirculationsystemsto
reduce the system’s hot water to a safe temperature at the point of use.
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.