Watts 88S User Manual
For Commercial and Industrial Applications
ES-88S
Job Name
Job Location
Engineer
Approval
LEAD FREE
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Series 88S
Stainless Steel Wye-Pattern
Strainers, Threaded Connections
Sizes: 1/4" – 2" (8-50mm)
Series 88S Stainless Steel, Wye-Pattern Strainers with threaded
connections are used in liquid or steam applications.
They are built for long service in corrosive, high pressure, and
high temperature applications. The bottom-threaded cap is
mated to the body with straight threads and is sealed off from
contact with the media flowing through the strainer by a cap
gasket. This prevents corrosion of the threads, thus enabling
easy servicing and avoiding potential deterioration of the
threads after an extended period. The cap is tapped for a closure plug. Closure plug is not provided.
Contractor
Approval
Contractor’s P.O. No.
Representative
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No. 88S
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Features
• Class 600 stainless steel body
• Wye-pattern
• Threaded connections
• Stainless steel screen
• Stainless steel tapped retainer cap with graphite gasket
Pressure (Non-Shock)-Temperature
Maximum Working Pressure:
600psi (41.4 bar) at 489°F (254°C) WSP
1440psi (99.3 bar) at 100°F (38°C) WOG
Materials
Body: ASTM A-351 Grade CF8M
Retainer:
1
/4" – 1" (8mm-25mm) ASTM A-276 Grade 316
1
1
/4" - 2" (32mm–50mm) ASTM A-351 Grade CF8M
Cap Gasket: Graphite fiber
Screen: Perforated stainless steel
stainless steel
stainless steel
stainless steel
*The wetted surface of this product contacted by consumable
water contains less than 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
/4 - 2 8-50mm 0.062 1.57
†Wire mesh liners are available to insert inside the standard
1
⁄16" perforated screen.
A
1
⁄16" 304SS perf.
Performance Data
For standard 1⁄16" (1.6mm) perforated stainless screen.
300
200
100
9
8
7
6
5
4
3
2
10
9
Liquid Flow (Water) - gpm
8
7
6
5
4
3
2
1
0.1 .2 .3 .4 .5 .6 .7 .8 .91 2 3 4 5 6 7 8 9 10
Flow/Pressure Drop Chart
Pressure Drop - psi
in. mm
2 50
1
⁄2 40
1
1
1
⁄4 32
1 25
3
⁄4 20
1
⁄2 15
3
⁄8 10
1
⁄4 8
Strainer Size
Inlet
NPT
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
the flow capacity curve at intersection with the one (1)
psi pressure drop.
B
To convert to atmospheres, multiply by .069.
To convert gpm to lpm, multiply by 3.8
For performance data on nonstandard screens and liners,
please send for F-C77.
C
Cap
NPT
Dimensions — Weights
SIZE DIMENSIONS WEIGHTS
A B C (NPT) Cv
in. mm in. mm in. mm in. mm lbs. kgs. Rating
1⁄4 8 3 76 21⁄4 57 1⁄4 8 1.3 .5 31⁄2
3⁄8 10 3 76 21⁄4 57 1⁄4 8 1.3 .5 6
1
⁄2 15 313⁄16 97 25⁄8 67 1⁄4 8 2.1 .9 101⁄2
3⁄4 20 43⁄8 111 33⁄16 81 3⁄8 10 3.0 1.3 17
1 25 5
1
1
⁄4 32 55⁄8 143 47⁄8 124 3⁄4 20 5.8 2.6 45
1
1
⁄2 40 61⁄4 159 5 127 3⁄4 20 7.0 3.1 60
2 50 7
3
⁄16 132 33⁄4 95 1⁄2 15 4.5 2.0 28
1
⁄2 191 61⁄8 156 1 25 10.0 4.5 100
A Watts Water Technologies Company
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
ES-88S 1325 © 2013 Watts
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