Watts Strainers - Clean My Water

Cast Stainless Steel Strainers, Wye-Pattern,
Flanged End Connections
150 psig WSP / 275 psig WOG, Sizes 1 ⁄2" – 12"
77F-CSSI Strainers
This cost-effective Class 150 series of cast stainless
steel strainers are manufactured overseas. They are
furnished with blow-off connections and a machined
seat that allows the seat to be self-aligning and
assures a perfect fit. All sizes come complete with
flanged blow-off screen cover and non-asbestos gasket.
The strainer may be installed in horizontal or vertical
pipe with the blow-off connection at the lower
end of the screen retainer cover.
Blow-off Outlets
Tapped NPT; see dimension “C” for specific sizes.
Blow-off plug furnished.
Maximum Pressures (Non-Shock) & Temperatures
Steam:
150 psig @ 400°F.
Water, Oil, Gas 275 psig @ 100°F.
Materials of Construction
Body and screen retainer cover are constructed of
ASTM A-351 Grade CF8M Type 316SS. Plug is ASTM
A-182 Type 316. All screens are 304SS, gasket is
PTFE.
ANSI 300 Class Cast Stainless Steel Strainers
Consult Watts for availability of stainless steel 300 psig
WSP / 720 psig WOG 316SS strainers.
Dimensions - Weights
Inlet
A
For liquid or steam service
77F-CSSI
Performance Data
Table shows flows (gpm-water) at various pressure
drops (psig) using standardly furnished screens.
Flow (water) - gpm
10000
1000
100
12"
10"
8"
6"
5"
4"
3"
2 1 ⁄2"
2"
1 1 ⁄2"
1 1 ⁄4"
1"
3
⁄4"
77F-CSSI
C
NPT
Dimensions (approx.)
Ordering Size (DN) A B C (NPT) Weights
Code in. mm in. mm in. mm in. mm lbs. kgs.
0823089 1
⁄2" 15 6 152 3 7 ⁄8 98 1
⁄4 8 6 2.4
0823090 3
⁄4" 20 7 178 4 1 ⁄4 108 3
⁄8 10 7 2.9
0823091 1" 25 7 1 ⁄2 191 4 3 ⁄4 121 1
⁄2 15 9 4.0
0823092 1 1 ⁄2" 40 9 229 5 5 ⁄8 143 1
⁄2 15 12 5.4
0823093 2" 50 8 5 ⁄8 219 5 1 ⁄4 133 1
⁄2 15 20 9.0
0823094 2 1 ⁄2" 65 10 1 ⁄4 260 7 1 ⁄2 191 3
⁄4 20 32 14.5
0823095 3" 80 11 5 ⁄8 295 7 195 1 25 36 16.3
0823096 4" 100 14 3 ⁄8 365 9 1 ⁄8 232 1 1 ⁄2 40 61 27.6
0823097 6" 150 18 5 ⁄8 473 13 330 2 50 160 72.5
0823098 8" 200 24 3 ⁄8 619 15 5 ⁄16 389 2 50 210 95.2
0823099 10" 250 26 660 19 1 ⁄8 486 2 50 440 199.5
0823100 12" 300 30 3 ⁄8 772 22 559 2 50 585 265.3
Dimensions shown are subject to change. Contact Watts for exact dimensions
when required.
B
10
1
.7
Standard Screens
0.1 1 10
Pressure Drop - psig
Size Openings Standard Screens
1
⁄2" - 1 1 ⁄2" 0.032" 1
⁄32" 304SS perf.
2" - 3" 0.045" 3
⁄64" 304SS perf.
4" - 12" 0.125" 1
⁄8" 304SS perf.
1
⁄2"
Strainer Size
14
For additional information, please call or write for ES-77F-CSSI specification sheet.