Watts 88-CSI User Manual
For Commercial and Industrial Applications
ES-88CSI
Job Name
Job Location
Engineer
Approval
LEAD FREE
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*
Series 88CSI
Cast Steel Wye-Pattern Strainers,
Threaded and Socket Weld
Connections
Sizes:
Series 88-CSI Cast Steel Wye-Pattern Strainers with Threaded
(Model 88CSI-T) or Socket Weld (Model 88CSI-SW) connections are used in liquid or steam applications. These strainers
are manufactured overseas. Series 88-CSI has a machined
seat that allows the screen to be self-aligning to assure a perfect fit. All sizes come with blowdown connection and an easily
removable stainless steel screen. Blowdown plug is furnished.
1
/2" - 2" (15 - 50mm)
Contractor
Approval
Contractor’s P.O. No.
Representative
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No. 88CSI
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Features
• Class 600 cast steel body
• Wye-pattern
• Threaded connections (Model 87CSI-T)
• Socket weld connections (Model 87CSI-SW)
• Self-aligning stainless steel screen
• Cast steel retainer cap is tapped and plugged
• Graphite-filled stainless steel spiral wound gasket
Models
88CSI-T threaded connections
88CSI-SW socket weld connections
Pressure (Non-Shock)-Temperature
Maximum Working Pressure:
600psi (41.4 bar) at 489°F (254°C) WSP
1480psi (102.0 bar) at 100°F (38°C) WOG
Materials
Body: ASTM A-216 Grade WCB cast steel
Retainer Cap: ASTM A-216 Grade WCB cast steel
Screen: 304 stainless steel
Cap Gasket: Graphite-filled 304 stainless steel
spiral wound
*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
1⁄ - 11⁄2 15-40 0.032 0.813
2 50 0.045 1.143
1
⁄32 304SS perf.
3
⁄64 304SS perf.
Performance Data
Table shows flow rates (gpm-water) at various pressure drops
(psi) using standard screens.
300
100
in. mm
2 50
1
1
⁄2 40
1
⁄4 32
1
1 25
3
⁄4 20
10
Flow (water) - gpm
1
.5
0.1 1 10
Pressure Drop - psi
A
Watts product specifications in U.S. customary units and
metric are approximate and are provided for reference only.
Inlet
NPT/SW
For precise measurements, please contact Watts Technical
Service. Watts reserves the right to change or modify prod-
uct 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.
B
Flow-coefficient
The flow coefficient (Cv) is the number of gallons per minute
of water flowing through a given size restriction at a pressure
Cap
C
NPT
Dimensions — Weights
SIZE DIMENSIONS WEIGHTS
A B C (NPT)
in. mm in. mm in. mm in. mm lbs. kgs.
1⁄2 15 215⁄16 75 21⁄4 57
3
⁄4 20 37⁄16 87 29⁄16 65
1 25 4
1
1
⁄4 32 415⁄16 125 31⁄16 78
1
1
⁄2 40 59⁄16 141 35⁄16 84
2 50 6
Dimensions shown are subject to change. Contact Watts for exact dimensions when required.
9
⁄16 116 213⁄16 71
15
⁄16 176 413⁄16 122 1 25 15 6.8
drop on 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 bars, multiply by .069
1
⁄4 8 2 .9
3
⁄8 10 3 1.3
3
⁄8 10 5 2.2
3
⁄4 20 7 3.1
3
⁄4 20 10 4.5
1
⁄2 15
Strainer Size
A Watts Water Technologies Company
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
ES-88CSI 0930 © Watts, 2009
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
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