Watts 53L - Manual

Series 3L, 53L
Poppet Type Pressure Relief
Valves for Protection Against
Excessive Pressure
Sizes: 3L: 3 /
4
" (20mm) 53L: 1 /
2
" (15mm)
Series 3L and 53L are used for protection against excessive pressure
on domestic storage tanks or tankless water heaters. Similar in
construction to Watts Model 10L, the Model 3L has no temperature
relieving element. Model 53L has the basic design as Model 3L
except it is furnished in 1 ⁄
2
" (15mm) size and does not comply
with A.S.M.E. requirements. Pressure range is 75-150psi (5.2-10.3
bar). Series 3L and 53L come in standard settings of 75, 100, 125
and 150psi (5.2, 6.9, 8.6 and 10.3 bar). These Pressure Relief Valves
are 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).
Features
• Bronze bodies
• Furnished with test levers
• Relieves excessive pressure on storage tanks
• Relieves excessive pressure on tankless water heaters
• Model 3L is ASME approved
• Model 53L is CSA certified and is furnished in
1 /
2
" size
• Compatible with Model 210 gas shutoff valves
Models
Solar 3L Use in solar applications. Specify Z9 for stainless
steel lever and pin or outside solar applications.
Model 3L ASME construction/Tested, listed and certified
by the National Board of Boiler and Pressure
Vessel Inspectors
Model 53L Does not comply with ASME requirements/Listed
and certified by CSA
Model 53 Model 53L without test lever
Model
3L 53L
For Residential, Commercial and Industrial Applications
ES-3L-53L
model Size HeigHt WidtH WeigHt verSion
in mm in mm in mm lbs. gms.
3L 3 ⁄
4
20 3 1 ⁄
2
89 1 3 ⁄
4
44 5 ⁄
8
284 M7
53L 1 ⁄
2
15 3 1 ⁄
2
89 1 7 ⁄
8
48 1 ⁄
2
227 M7
Model 3L * 3 ⁄
4
" (20mm) size CSA and ASME
NOTE: Watts product specifications in U.S. customary units and
metric are approximate and are provided for reference only. For pre-
cise 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 incur-
ring any obligation to make such changes and modifications on
Watts products previously or subsequently sold.
Materials
Body: Bronze
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)
NOTE: On all the above pressure relief valves, pressure setting
should be not less than 25-30 lbs. above the maximum service main
pressure.
Dimensions-Weights
ES-3L-53L 1350 © 2013 Watts
USA: Tel. (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel. (905) 332-4090 • Fax: (905) 332-7068 • 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
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
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Use in fire protection grid systems. Protects
against excessive pressure from thermal expan-
sion or line surge. UL listed. Set at 175psi, 185psi,
260psi, & 310psi. For additional information, refer
to literature ES-FP53L.
FP53L