Watts 97FB-CIB User Manual
For Commercial and Industrial Applications
ES-97FB-CI
Job Name
Job Location
Engineer
Approval
LEAD FREE
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Series 97FB-CI
Cast Iron, Simplex, Basket
Strainers
Sizes: 2" – 12" (50-300mm)
Series 97FB-CI cast iron, simplex basket strainers are for use
in liquid and steam applications. All sizes of Series 97FB-CI
are furnished with a plugged blowdown connection and angledesigned baskets. Sizes 8" (200mm) and larger come with a
side drain facing the outlet of the strainer. All sizes come with
a bolted cover and a graphite gasket. These strainers may only
be installed in a horizontal position.
Features
Contractor
Approval
Contractor’s P.O. No.
Representative
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No. 97FB-CIB
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• Class 125 cast iron body
• Angle-designed basket
• Flanged connections
• Stainless steel screen
• Cast iron retainer cap with graphite gasket
• Blowdown plug
Models
97FB-CIB bolted screen retainer cover
Standards
The dimensions and drilling of flanges conform to ANSI B16.1,
Class 125 and Class 150 flanges.
Pressure (Non-Shock)-Temperature
Model 97FB-CIB Maximum Working Pressure:
200psi (13.8 bar) at 150°F (66°C) WOG
125psi (8.6 bar) at 353°F (178°C) WSP
Materials
Body: ASTM A-126 Class B cast iron
Retainer Cap: ASTM A-126 Class B cast iron
Screen: 304 perforated stainless steel
Cap Gasket: Graphite
Blowdown Plug: ASTM A-126 Class B cast iron
*The wetted surface of this product contacted by consumable
water contains less than one quarter of one percent (0.25%) of
lead by weight.
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.
Standard Screens
SIZE OPENINGS STANDARD SCREENS
in. mm in. mm
2 - 3 50-80 0.045 1.143
4 - 12 100-300 0.125 0.317
Consult Watts for information and availability of flanged basket strainers
manufactured of cast bronze, cast or fabricated steel (UL/FM) and stainless steel.
Also available are threaded and socket weld 1⁄2" - 2"(15-50mm) cast steel
basket strainers.
Bolted Cover
D
A
B
Inlet
C
3
⁄64" 304SS perf.
1
⁄8" 304SS perf.
E
(NPT)
Performance Data
Table shows flows (gpm-water) at various pressure drops (psi)
using standard screens.
10000
1000
100
Liquid Flow (Water) - gpm
10
0.1 1 10
Pressure Drop - psi
in. mm
12 300
10 250
8 200
6 150
5 125
4 100
3 80
21⁄2 65
2 50
Strainer Size
Flow-coefficient
The flow coefficient (Cv) is the number of gallons per minute
of water flowing through a given size restriction at a pressure
drop of one psi. To obtain the Cv factor for a given size
strainer, read capacity at intersection with the one (1)
psi pressure drop.
Conversions: For gpm to lpm, multiply by 3.8
For psi to bar, multiply by .069
Dimensions — Weights
REMOVAL
SIZE DIMENSIONS CLEARANCE WEIGHTS
A B C D E (NPT)
in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs.
2 50 81⁄8 206 83⁄8 213 5 127 53⁄8 137 1 25 22 9.9
21⁄2 65 83⁄4 222 95⁄8 244 55⁄16 135 65⁄16 160 1 25 31 14.0
3 80 97⁄8 251 111⁄4 286 61⁄2 165 8 203 1 25 42 19.0
4 100 111⁄2 292 131⁄2 343 8 203 95⁄16 237 1 25 70 31.7
5 125 131⁄8 333 145⁄8 371 8 203 101⁄4 260 1 25 90 40.8
6 150 147⁄8 378 155⁄8 397 85⁄8 219 111⁄8 283 11⁄4 32 124 56.2
8 200 1811⁄16 475 21 533 113⁄4 298 159⁄16 395
10 250 201⁄8 511 241⁄2 622 133⁄4 349 18 457
12 300 261⁄4 667 293⁄4 756 163⁄8 416 231⁄4 591 1 25 670 303.9
Dimensions shown are subject to change. Contact Watts for exact dimensions when required.
A Watts Water Technologies Company
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
ES-97FB-CI 0934 © 2009 Watts
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
3
⁄4 20 270 122.4
3
⁄4 20 384 174.1
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