Watts FP53L - Manual

Model FP53L
Pressure Relief Valve
Size: 1 ⁄
2
" (15mm)
Watts No. FP53L is designed for use in fire protection grid systems
to provide protection against excessive water pressure caused by
thermal expansion or line surge. It is available in 175psi (12.1 bar),
185psi (12.8 bar), 260psi (17.9 bar) and 310psi (21.4 bar) pressure
relief settings and can be installed horizontally or vertically. Bronze
body construction with stainless steel spring to inhibit corrosion. The
valve is constructed with a precision stem guide to ensure proper
reseating. The test lever affords periodic manual testing and flushing
of waterways and seating surfaces.
Features
• Underwriters Laboratory listed
• Forged stainless steel spring
• Bronze body construction for superior strength and to
prevent corrosion
• Manual test lever
• Valve stem is guided to enhance reseating
•
1 ⁄
2
" (15mm) male inlet x female outlet
• Pressure settings: 175psi (12.1 bar), 185psi (12.8 bar),
260psi (17.9 bar) and 310psi (21.4 bar)
Specifications
For applications requiring a UL approved relief valve to provide
pressure relief protection from water pressure in excess of 175psi
(12.1 bar). Each valve shall be bronze body construction with forged
stainless steel spring. It shall have a test lever and the valve shall be
guided to enhance reseating and to decrease chance of the seat
being misaligned. Watts Model No. FP53L.
Dimensions — Weight
1 ⁄
2
" NPT
Female Outlet
Model Size HeigHt WidtH WeigHt
in. mm in. mm in. mm lbs. kgs.
FP53L 1 ⁄
2
15 3 1 ⁄
2
89 1 7 ⁄
8
48 1 ⁄
2
.23
Pressure Relief Valves should be tested periodically to ensure that
the product has not been affected by corrosive water conditions and
to ensure that the valve and discharge piping have not been altered
or tampered with.
1 ⁄
2
" NPT
Male Inlet
For Fire Protection Applications
ES-FP53L
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
This device is designed for emergency safety relief and shall
not be used as an operating control.
NOTICE
This information is not intended to replace the full product
installation and safety information available or the experience
of a trained product installer. You are required to thoroughly
read all installation instructions and product safety informa-
tion before beginning the installation of this product.
WARNING !
ES-FP53L 1414 © 2014 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