Watts 53 User Manual
Series 53, Pressure relief valves, For commercial and residential applications
For Commercial and Residential Applications
ES-53
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IMPORTANT: INQUIRE WITH GOVERNING AUTHORITIES
FOR LOCAL INSTALLATION REQUIREMENTS
Series 53
Pressure Relief Valves
Sizes: 53:
1
⁄
2
" or
3
⁄
4
" (15-20mm)
Watts Series 53 Pressure Relief Valves are spring operated
bronze relief valves designed to be used only as protection
from the build up of excessive pressure in systems contain-
ing water, oil or air. These valves are not ASME approved
safety relief valves and should not be used in system appli-
cations with this requirement. They feature all bronze con-
struction with stainless steel springs. Series 53 have stan-
dard pressure settings of 75, 125, and 150psi (5.2, 8.6 and
10.3 bar). They are also specially available at 50psi (3.4 bar)
setting. Pressure range is 75-175psi (5.2-12.1 bar).
Features
• Rugged bronze body
• Stainless steel springs
• Protects against buildup of excessive pressure
• For use in systems containing water, oil, and air
Models
53 - Pressure relief valve
Materials
Body:
Bronze
Springs:
Stainless steel
Disc:
Buna-N
Pressure
53 Pressure Range: 75-175psi (5.2-12.1 bar)
53
The Watts products shown on this page are small type relief valves.
Construction of these products does not meet the (ANSI Z21.22)
nationally recognized applicable standard.
Dimensions-Weights
Model
Size (dN)
HeigHt
WidtH
WeigHt
in
mm
in
mm
in
mm
lbs.
gms.
53
1
⁄
2
or
3
⁄
4
15 or 20
2
7
⁄
8
73
1
3
⁄
4
44
1
⁄
2
227
ES-53 1010
© 2010 Watts
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.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