Specification Sheet

For Residential and Commercial Applications
ES-LFTWH
Job Name
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Contractor
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Job Location
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Approval
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Engineer
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Contractor’s P.O. No.
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Approval
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Representative
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LFTWH-UT-H
LFTWH-QC-H
LFTWH-UT-C LFTWH-QC-C
Specifications
A tankless water heater valve shall be installed where indicated
on the plans. The valve shall facilitate isolation of the water
heater from the water lines, water heater purging, draining and
a provision for a pressure relief valve. The Lead Free* Tankless
Water Heater Valves shall comply with state codes and standards,
where applicable, requiring reduced lead content. The valve shall
be a Watts Series LFTWH.
Materials
Body: Lead Free* copper silicon alloy body
Ball: Lead Free* brass
Seats: Virgin PTFE
Series LFTWH
Tankless Water Heater Valves
Sizes:
3
⁄4" (20mm) & 1" (25mm)
Series LFTWH tankless water heater valves are designed to
simplify the installation, maintenance and operation of tankless
water heaters. The LFTHW features Lead Free* construction to
comply with Lead Free* installation requirements.
Features
•LeadFree*coppersiliconalloybody
•FPTunionsforconnectiontowaterheater(allmodels)
•FPTunionsforconnectiontowaterlines(UTmodels)
•Quick-Connectendconnectionstowaterlines(QTmodels)
•FPTconnectiontowaterlines(FTmodels)
•Sweatconnectiontowaterlines(FSmodels)
•FPT/sweatunionsforconnectiontowaterlines(UTSmodels)
•Full-port,quarter-turnballvalvewithcolor-codedteehandle
and union
•Quarter-turnpurgeanddrainvalvewithhoseconnectionand
tethered brass cap
•Optional
3
⁄4"pressurereliefvalve150psi(10.3bar)
•Optionalintegralspringcheckvalveincoldwatervalves
•HotandcoldvalvescertifiedtoNSF/ANSI61
•Staggeredconnectionpointsforeaseofinstallationandaccess
•Valvesaresuitableformosttanklessinstallations
•Noadditionaladaptersrequired
•600WOGrated
Models LFTWH RV
Model Nomenclature
LFTWH tankless water heater
UT union with female threaded tailpieces for connection to water lines
UTS union with female threaded and sweat tailpieces for connection to
water lines
QC  Quick-Connectfittingstowaterlines
FT female pipe thread connection to water lines
FS female sweat connection to water lines
H hot water valve
C cold water valve
CN cold water valve without integral spring check
HC hot and cold valve set
HCN hot and cold valve set, no spring check
RV 150psi relief valve
LEAD FREE
*
* The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
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.