ES-LFTWH
For Residential and Commercial Applications
Job Name –––––––––––––––––––––––––––––––––––––––––––– Contractor –––––––––––––––––––––––––––––––––––––––––––––
Job Location –––––––––––––––––––––––––––––––––––––––––– Approval ––––––––––––––––––––––––––––––––––––––––––––––
Engineer –––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––––
Approval –––––––––––––––––––––––––––––––––––––––––––––– Representative –––––––––––––––––––––––––––––––––––––––––
LEAD FREE*
Series LFTWH
LFTWH-UT-C
LFTWH-QC-C
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
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
Models
Model Nomenclature
LFTWH UT
UTS
QC
FT
FS
H
C
CN
HC
HCN
RV
LFTWH-UT-H
LFTWH-QC-H
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
LFTWH
tankless water heater
union with female threaded tailpieces for connection to water lines
union with female threaded and sweat tailpieces for connection to
water lines
Quick-Connect fittings to water lines
female pipe thread connection to water lines
female sweat connection to water lines
hot water valve
cold water valve
cold water valve without integral spring check
hot and cold valve set
hot and cold valve set, no spring check
150psi relief valve
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.
RV
/ " LFTWH-QC-H
/ " LFTWH-QC-C
3 4
3 4
C
C
/ " LFTWH-UT/UTS-H
/ " LFTWH-UT/UTS-C
3 4
3 4
C
C
B
B
A
CERTIFIED TO
NSF/ANSI 61
A
CERTIFIED TO
NSF/ANSI 61
CERTIFIED TO
NSF/ANSI 61
TWH-UT-C
TWH-UT-H
TWH-CTS-H
A
A
CERTIFIED TO
NSF/ANSI 61
TWH-CTS-C
B
/ " LFTWH-QC-H-RV
3 4
3 4
C
C
/ " LFTWH-UT/UTS-H-RV
C
/ " LFTWH-FT/FS-H-RV
3 4
D
A
/ " LFTWH-FT/FS-CN
3 4
C
C
A
A
D
D
A
/ " LFTWH-FT/FS-TS-H
3 4
A
E
B
B
B
B
3/4 LFTWH-FT/FS-H
LINE ART
B
1" LFTWH-UT/UTS-H
1" LFTWH-UT/UTS-CN
C
A
A
B
C
B
1" LFTWH-UT/UTS-H-RV
C
A
B
D
Dimensions — Weights
size (DN)
MODEL
CONNECTIONsdimensions
in.
mm
⁄ "
3⁄4"
3⁄4"
3⁄4"
3⁄4"
3⁄4"
3⁄4"
3⁄4"
1"
1"
1"
34
20
20
20
20
20
20
20
20
25
25
25
LFTWH-UT-C
LFTWH-UT-H
LFTWH-QC-C
LFTWH-QC-H
LFTWH-UT-H-RV
LFTWH-QC-H-RV
LFTWH-FT/FS-CN
LFTWH-FT/FS-H
LFTWH-UT/UTS-CN
LFTWH-UT/UTS-H
LFTWH-UT/UTS-H-RV
Union x Union
Union x Union
Quick-connect x Union
Union x Quick-connect
Union x Union
Quick-connect x Union
Union x FPT/Sweat
Union x FPT/Sweat
Union x Union
Union x Union
Union x Union
in.
415⁄16125213⁄1671 2
615⁄16177 23⁄469 2
55⁄16 135213⁄1671 2
73⁄818723⁄469 2
615⁄16177 23⁄4 69 2
73⁄818723⁄4 69 2
41⁄16103 21⁄264 17⁄8
6
152 21⁄264 17⁄8
53⁄8
13725⁄8 6621⁄8
73⁄16 18325⁄8 6621⁄8
73⁄16 18325⁄8 6621⁄8
A Watts Water Technologies Company
ES-LFTWH 1319
WEIGHT
A B CD E
mm in.
mm in.
mm in.
mm
in.
51 –
51 –
51 –
51 –
5131⁄2
5131⁄2
47–
4731⁄2
54–
53–
53311⁄16
mm
lbs.
kgs.
– – – 2.2
– – – 2.5
– – – 2.0
– – – 2.4
8937⁄8 992.5
8937⁄8 992.4
– – – 1.9
8927⁄16 622.1
– – – 3.0
– 25⁄8
663.3
9425⁄8
663.8
1.0
1.1
.9
1.1
1.1
1.1
0.9
0.9
1.3
1.5
1.7
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
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