Watts 97FB-FSFE - Manual

Series 97FB-FSFE
UL/FM Fire Service Strainers
Sizes: 3" – 10" (80 – 250mm)
Series 97FB-FSFE (flanged) UL/FM Fire Service Strainers are
used in water spray fire protection systems to protect against
clogging that can be caused by particles fouling the discharge
opening of the sprinkler heads. Strainers for fire systems are
designed to trap foreign material 1 ⁄
4
" diameter or larger.
This type of strainer is usually installed upstream of most
of the devices in the system including the meters, backflow
preventers (or detector check valves) and flow alarms, in order
to protect these devices from damage caused by dirt
and debris.
Features
• Fabricated steel, epoxy lined and coated
body and cover
• With cleanout port
• Large solids trap to minimize screen blockage
• 304 Stainless Steel strainer element
Pressure – Temperature
Suitable for supply pressure up to 175psi (12.1 bar)
Water temperature up to 140˚F (60˚C)
Materials
Body and cover: corrosion resistant fusion-bonded epoxy
lined and coated steel.
Screen: 304 Stainless Steel, .25 diameter perforation
Clean-Out Plug: Brass or Bronze
Flanges: AWWA Class “D”
For Fire Protection Applications
ES-97FB
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. –––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
97FB-FSFE
Listed 321 Class 5551
Approvals
Specifications
The strainer shall be designed to permit removal of the strainer
screen for replacement and repair without removing the body
from the line. A flush outlet shall be provided with each strainer.
The strainer screen shall withstand 125psi (8.6 bar) when
plugged. Friction loss shall not exceed 10psi (69 kPa) when
tested with foreign materials (gravel) equal to 2 1 ⁄
2
' (762mm)
of filled pipe trapped in the strainer. Open screen area shall be
at least 6 times greater than the nominal pipe size open area.
Friction loss shall not exceed 3psi (21 kPa) at rated flow when
tested with clean strainer screen and clean water. The strainer
shall be a Watts Series 97FB-FSFE.
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.