Watts 77F-CSSI User Manual
For Commercial and Industrial Applications
ES-77F-CSSI
Job Name
Job Location
Engineer
Approval
LEAD FREE
–––––––––––––––––––––––––––––––––––––––––––
–––––––––––––––––––––––––––––––––––––––––
–––––––––––––––––––––––––––––––––––––––––––––
–––––––––––––––––––––––––––––––––––––––––––––
*
Series 77F-CSSI
Stainless Steel, Flanged,
Wye-Pattern Strainers
Sizes: 1/2" – 6" (15 - 150mm)
Series 77F-CSSI Stainless Steel, Flanged, Wye-Pattern Strainers
are used in liquid and steam applications. They are furnished
with blowdown connections and a machined seat that allows the
screen to be self-aligning and assures a perfect fit.
All sizes come complete with a bolted screen retainer cover
and PTFE gasket. Screen cover is tapped for strainer clean out
by removing the blowdown plug or opening a blowdown valve
piped to the blowdown outlet. The strainer may be installed in
horizontal or vertical pipe with the blowdown connection at the
lower end of the screen retainer cover.
Contractor
Approval
Contractor’s P.O. No.
Representative
––––––––––––––––––––––––––––––––––––––––––––
–––––––––––––––––––––––––––––––––––––––––––––
––––––––––––––––––––––––––––––––––––––––
No. 77F-CSSI
––––––––––––––––––––––––––––––––––
Features
• Stainless steel body
• Wye-pattern
• Self-aligning stainless steel screen
• Screen retainer cover tapped and plugged
Pressure (Non-Shock)-Temperature
Maximum Working Pressure:
150psi (10.3 bar) at 400°F (204°C) WSP
275psi (19.0 bar) at 100°F (38°C) WOG
Materials
Body: ASTM A-351 Grade CF8M
Plug: ASTM A-182 Type 316
Screen: 304 stainless steel
Screen Retainer Cover: ASTM A-351 Grade CF8M
Gasket: PTFE
Type 316 stainless steel
stainless steel
Type 316 stainless steel
*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
1/2 - 11/2 15-40 0.032 0.813
2 - 3 50-80 0.045 1.143
4 - 6 100-150 0.125 3.175
A
Inlet
1
⁄32 304SS perf.
3
⁄64 304SS perf.
1
⁄8 304SS perf.
Performance Data
Table shows flows (gpm-water) at various pressure drops (psig)
using standardly furnished screens.
in. mm
10000
1000
100
Flow (water) - gpm
12 300
10 250
8 200
6 150
5 125
4 100
3 80
1
2
⁄2 65
2 50
1
1
⁄2 40
1
⁄4 32
1
1 25
3
⁄4 20
B
C
NPT
Dimensions — Weights
SIZE DIMENSIONS WEIGHTS
A B C (NPT)
in. mm in. mm in. mm in. mm lbs. kgs.
1⁄2 15 6 152 37⁄8 98 1⁄4 8 6 2.4
3
⁄4 20 7 178 41⁄4 108 3⁄8 10 7 2.9
1 25 7
1
1
⁄2 40 9 229 55⁄8 143 1⁄2 15 12 5.4
2 50 8
1
2
⁄2 65 101⁄4 260 71⁄2 191 3⁄4 20 32 14.5
3 80 11
4 100 14
6 150 18
Dimensions shown are subject to change. Contact Watts for exact dimensions
1
⁄2 191 43⁄4 121 1⁄2 15 9 4.0
5
⁄8 219 51⁄4 133 1⁄2 15 20 9.0
5
⁄8 295 7 195 1 25 36 16.3
3
⁄8 365 91⁄8 232 11⁄2 40 61 27.6
5
⁄8 473 13 330 2 50 160 72.5
1
10
1
.7
0.1 1 10
⁄2 15
Strainer Size
Pressure Drop - psi
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 bars, multiply by .069
A Watts Water Technologies Company
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
ES-77F-CSSI 0930 © Watts, 2009
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Loading...