Watts LF123LP User Manual
For Residential and Point of Use Applications
ES-LF123LP
Job Name
Job Location
Engineer
Approval
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LEAD FREE
*
Contractor
Approval
Contractor’s P.O. No.
Representative
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Series LF123LP
Water Pressure Reducing Valves
Size: 1⁄2" – 3⁄4" (15 – 20mm)
Series LF123LP Water Pressure Reducing Valves are designed
to reduce incoming water pressure to a sensible level to protect
plumbing system components and reduce water consumption.
This series is suitable for water supply pressures up to 200psi
(13.8 bar) and may be adjusted from 10 – 30psi (69 – 207 kPa).
The standard setting is 30psi (207 kPa). All parts are quickly and
easily serviceable without removing the valve from the line. The
LF123LP features Lead Free* construction to comply with Lead
Free* installation requirements.
Features
• High performance
• High flow capacity
• Integral stainless steel valve seat
• Integral stainless steel strainer
• Lead Free* cast copper silicon alloy body construction
• Serviceable in-line
Specifications
A Water Pressure Reducing Valve and strainer shall be
installed to reduce pressures to 35psi (241 kPa) or less. The
valve shall have a stainless steel seat with EPDM seat disc and
diaphragm. Valve shall be a Watts Series LF123LP.
Pressure – Temperature
Temperature Range: 33˚F – 180˚F (0.5˚C – 82˚C)
Maximum Working Pressure: 200psi (13.8 bar)
Adjustable Reduced Pressure Range: 10 – 30psi (69 – 207 kPa)
Standard Reduced Pressure Setting: 30psi (207 kPa)
Dimensions – Weights
Valve Features a Modular
Seat & Disc Assembly
Materials
Body: Lead Free* cast copper silicon alloy
Seat: Stainless steel
Integral Strainer: Stainless steel
Diaphragm: Reinforced EPDM
Valve Disc: EPDM
Capacity
Inlet – 83psi (572 kPa)
psi kPa
0 0
2 14
6 41
10 69
14 96
18 124
0 2 4 6 8 10 12 14 gpm
0 7.6 15.2 22.8 30.4 38 45.6 53.2 lpm
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.
Reduced – 18psi (124 kPa)
SIZE (DN) DIMENSIONS WEIGHT
A B C D
in. mm in. mm in. mm in. mm in. mm lbs. kgs.
1
⁄2 15 31⁄16 78 5 127 33⁄8 86 15⁄8 41 1.6 .73
3
⁄4 20 31⁄16 78 5 127 33⁄8 86 15⁄8 41 1.6 .73
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
LF123LP
C
B
D
A
USA: Tel. (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel. (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
ES-LF123LP 1315 © 2013 Watts
A Watts Water Technologies Company
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