Technical Specifications

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Series LF3L
Poppet Type Pressure Relief
Valves for Protection Against
Excessive Pressure
Sizes: LF3L:
3
⁄4" (20mm)
Series LF3L is used for protection against excessive pressure on
domestic storage tanks or tankless water heaters. Similar in con-
struction to Watts Model 10L, the Series LF3L has no temperature
relieving element. Pressure range is 75-150psi (5.2-10.3 bar).
Series LF3L comes in standard settings of 75, 100, 125 and 150psi
(5, 7, 8.6 and 10.3 bar). The Pressure Relief Valve is popularly
used in conjunction with the Model 210 gas shutoff valve on gas
water heaters to shut off gas to heater if water heater temperature
exceeds 210°F (99°C). The LF3L features Lead Free* construction
to comply with Lead Free* installation requirements.
Features
• Lead Free* Copper Alloy Body
• Furnished with test lever
• Relieves excessive pressure on storage tanks
• Relieves excessive pressure on tankless water heaters
• Series LF3L is ASME approved
• Compatible with Model 210 gas shutoff valves
Models
Solar LF3L Use in solar applications. Specify Z9 for stainless steel
lever and pin or outside solar applications.
Model LF3L ASME construction/Tested, listed and certified by
the National Board of Boiler and Pressure Vessel
Inspectors
LF3L
For Residential, Commercial and Industrial Applications
ES-LF3L
modeL Size HeigHt WidtH WeigHt verSion
in mm in mm in mm lbs. gms.
LF3L
3
⁄4 20 3
1
⁄2 89 1
3
⁄4 44
5
⁄8 284 M7
Model LF3L *
3
⁄4" (20mm) size CSA and ASME
Materials
Body: Lead Free* Copper Alloy
Spring: Stainless steel
Disc: Silicone
Pressure
Pressure range: 75-150psi (5.2-10.3 bar)
Standard settings: 75, 100, 125 and 150psi
(5.2, 6.9, 8.6 and 10.3 bar)
notiCe
Maximum system operating pressure must not exceed 75% of
valve set pressure.
Dimensions-Weights
LEAD FREE
*
ES-LF3L 1421 © 2014 Watts
USA: Tel: [phone] • Fax: [phone] • www.watts.com
Canada: Tel: [phone] • Fax: [phone] • www.watts.ca
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.
A Watts Water Technologies Company
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.