125B SERIES
BASKET STRAINERS
125B SERIES
CAST IRON
FLANGED BASKET STRAINERS
PRESSURES TO 200 PSIG (13.8 BARG)
T
EMPERATURES TO 450°F (232°C)
●FF flanges in accordance with ASME B16.1
●Angular basket for straight through flow
●Stainless steel perforated basket is standard
●Recommended minimum straining level is 250 microns
●NPT drain connection furnished with plug as standard
MODELS
●125B1F - Straight Flow
OPTIONS
●Other screen perforations and mesh liners
●Quick Opening Covers -
APPLICABLE CODES
●ASME B16.1
Canadian Registration OE 6331.5-125B1FI 10" & 12"
- 440 -
PRESSURE/TEMPERATURE CHART
ASME B16.1
0800-125B1FI-4____
12345678910111213141516
Add’l
Inlet Size Model Body Dash Perf Mesh Require-
Material ments
125B1 Series Ordering Code
Inlet Size -
Position 1 - 4
0200 - 2"
0250 - 2
1
⁄2"
0300 - 3"
0400 - 4"
0500 - 5"
0600 - 6"
0800 - 8"
1000 - 10"
1200 - 12"
1400 - 14"
1600 - 16"
1800 - 18"
2000 - 20"
Dash - Position 5
Model - Position 6 - 11
125B1F - Straight Flow
Body Material - Position 12
I - Cast Iron
Dash - Position 13
Perf1- Position 14
304 SS Material
2
B - 3/64" (std < 4")
4 - 1/8" (std => 4")
A - None
1 - 1/32"
2 - 1/16"
3 - 3/32"
5 - 5/32"
6 - 3/16"
7 - 7/32"
8 - 1/4"
9 - 3/8"
Z - Other
Mesh2- Position 15
Leave Blank
If not Required
(Std. All)
1 - 10
2 - 20
3 - 30
4 - 40
5 - 50
6 - 60
7 - 80
8 - 100
9 - 120
Z - Other
APPLICA TIONS
●Water, Oil Systems
●Other Liquid Systems
●Protection of Pumps, Meters, Valves and
Similar Equipment
For Quick Opening Covers Ratings,
Add’l Requirements -
Position 16
Leave Blank
If not Required
D - Special Drain Size
E1 -1/4" Vent
E2 -3/8" Vent
E3 -1/2" Vent
F - Silicon Free
G - Special Gaskets
T - Special Testing
V1- Clamp Cover
X - Oxygen Cleaning
Y - Other and / or
Multiple Specials
Indicate Specials
Clearly On the Order
see page 467.
See page 467
1. Standard screens
All 2"-3"—3/64" perf,
All 4"-20"— 1/8" perf.
For any variations, use the part
numbering system above but
clearly indicate the additional
requirement.
2. For other screen
material, contact
factory.
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125B SERIES
BASKET STRAINERS
Connections: 2"– 20" FF Flanged
SCREEN OPENINGS
STANDARD
SIZE SCREEN MATERIALS
2" – 3" 3/64 Perf. 304 SS
4" - 20" 1/8 Perf. 304 SS
125B SERIES
CAST IRON
FLANGED BASKET STRAINERS
SPECIFICATION
Basket Strainer shall have straight flow with an angular basket. The Basket
Strainer shall be cast iron with 125 PSIG ANSI rated FF flanges. The screen
shall be size _____ perforated stainless steel. The Strainer shall have an
inlet size of _____ and open area ratio of _____. The Basket Strainer shall
be SSI 125B Series.
MATERIALS OF
CONSTRUCTION
Body ………………………………………………Cast Iron A126-B
Cover ………………………………………………Cast Iron A126-B
Screen1…………………………………………………………304 SS
Plug2………………………………………………Cast Iron A126-B
Gasket1………………………………………………………Graphite
3
Bolt/Stud2……………………………………………………A307-B
Nut2………………………………………………………………A563
1. Recommended Spare Parts
2. Materials of equivalent strength may be substituted
3. Gasket for bolted cover. For Quick Opening Covers,
A B C D* E F G H**
WEIGHT
SIZE
Cover Unit
228
1
⁄8 41⁄16 91⁄16 5 215⁄16 113⁄4
1
⁄2 5 23
(50) (51) (206) (103) (230) (127) (75) (298) (15) (2.3) (10)
21⁄2 21⁄2 81⁄4 41⁄8 105⁄16 61⁄4 4 131⁄4
3
⁄4 7 33
(65) (64) (210) (106) (262) (159) (102) (337) (20) (3.2) (15)
339
7
⁄
8 4
15
⁄
16 12
3
⁄
16 7
1
⁄
8 5 15
3
⁄
8
3
⁄
4 9 44
(80) (76) (251) (125) (310) (181) (127) (391) (20) (4) (20)
4411
1
⁄2 53⁄4 135⁄8 8 513⁄16 173⁄4 1 13 67
(100) (102) (292) (146) (346) (203) (148) (451) (25) (6) (30)
5513
1
⁄8 69⁄16 149⁄16 81⁄2 71⁄16 201⁄2 1 20 88
(125) (127) (333) (167) (370) (216) (179) (521) (25) (9) (40)
6614
7
⁄8 77⁄16 153⁄4 9 715⁄16 23 1 26 120
(150) (152) (378) (189) (400) (229) (202) (584) (25) (12) (54)
881811⁄16 93⁄8 1915⁄16 12 927⁄32 30 11⁄2 45 220
(200) (203) (475) (238) (506) (305) (250) (762) (40) (20) (100)
10 10 201⁄
8 10 26 14 12
5
⁄
16 35
1
⁄
2 1
1
⁄
2 70 353
(250) (254) (511) (254) (660) (356) (313) (902) (40) (32) (160)
12 12 263⁄4 133⁄8 301⁄8 17 1511⁄32 421⁄2 2 110 523
(300) (305) (679) (340) (765) (432) (390) (1080) (50) (50) (237)
14 14 301⁄4 151⁄8 371⁄2 22 18 53 11⁄2 140 815
(350) (356) (768) (384) (953) (559) (457) (1346) (40) (64) (370)
16 16 331⁄
8 16
5
⁄
8 39
1
⁄
4 22
7
⁄
8 20
3
⁄
4 55
5
⁄
8 2 180 1041
(400) (406) (841) (422) (997) (581) (527) (1413) (50) (82) (472)
18 18 381⁄2 191⁄4 40 19 241⁄4 61 2 220 1446
(450) (457) (978) (489) (1016) (483) (616) (1549) (50) (100) (656)
20 20 413⁄
8 20
11
⁄
16 46
1
⁄
4 23
1
⁄
4 26
1
⁄
2 69
1
⁄
4 2 285 1980
(500) (508) (1051) (525) (1175) (591) (673) (1759) (50) (129) (898)
DIMENSIONS inches (mm) AND WEIGHTS pounds (kg)
* For models with Quick Opening Cover, consult factory. For sizes 2"-6", allow
clearance for bottom drain bolt removal.
**Side drain is standard on sizes 8" and larger. Bottom drain is optional.
Dimensions shown are subject to change. Consult factory for certified drawings.
see page 467
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125B SERIES
BASKET STRAINERS
125B SERIES
CAST IRON FLANGED BASKET STRAINERS
OPEN AREA RATIOS
with Standard Perforated Screen
Nominal Gross Free Open
Opening Outlet Screen Screen Area
Size
diameter Opening Area Area Area Ratio
(in) % (in2) (in2) (in2) (OAR)
2 3/64 36 3.14 29.4 10.6 3.5
21⁄2 3/64 36 4.91 43.6 15.7 3.3
3 3/64 36 7.07 75.0 27.0 3.9
4 1/8 40 12.57 104.4 41.8 3.3
6 1/8 40 28.27 177.3 70.9 2.5
8 1/8 40 50.27 307.0 122.8 2.4
10 1/8 40 78.54 450.0 180.0 2.3
12 1/8 40 113.1 688.5 275.4 2.4
14 1/8 40 153.94 1019.1 407.6 2.6
16 1/8 40 201.06 1248.6 499.4 2.5
OAR = Free Screen Area / Nominal Inlet Area
Free Screen Area = Opening % x Gross Screen Area
Values shown are approximate. Consult factory for exact ratios.
* For Gas, Steam or Air service, consult factory.
Basket Burst Pressure
Page 472
Correction Factors for Other
Viscous Liquids and/or Mesh Liners
Page 471
Correction Factors
for Clogged Screens
Page 471
Other Screen Openings
Page 466
125B SERIES
CAST IRON FLANGED BASKET STRAINERS
PRESSURE DROP VS FLOW RATE
Water Service, Clean Basket, 1/32" - 1/4" Perforated Screen*
(SIZES 2" - 20")
10
1
PRESSURE DROP (PSID)
0.1
2"
100
3"
2-1/2"
FLOW RATE (GPM)
4"
5"
6"
1000
8"
10"
12"
14"
16"
18"
20"
10000
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