Selection Guide
Rotameters  
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 Model  
FL-1000
 
FL-110
 
FL-120
 
FL-1300 AND FL-1400
 
FL-1500
 
FL-1600
 
FL-1650
 
FL-1700
 
FL-1800
 
FL-1900
 
FL-2,3,4AA,SA,AB,SB,GP
 
FL-2000
 
FL-210
 
FL-300
 
FL-3000 AND FL-3100
 
FL-3600 AND FL-3800
 
FL-400A
 
FL-5000
 
FL-75
 
FL-77 AND FL-78
 
FL-800
 
FL-86
 
FL1200
 
FL30000
 
FL4000
 
FL45100
 
FL45200
 
FL46300
 
FL50000
 
FL600
 
FL7000
 
FL900
 Starting Price  
£30
 
£137
 
£239
 
£389
 
£315
 
£605
 
£362
 
£82
 
£123
 
£113
 
£200
 
£24.75
 
£87
 
£77
 
£157
 
£80
 
£190
 
£46
 
£108
 
£86
 
£19.5
 
£125
 
£332
 
£44
 
£24.75
 
£150
 
£304
 
£46
 
£60
 
£153
 
£24.75
 
£447
 Min Flow Rate Air  
5.5 SCFH
 
100 ML/MIN
 
15 ML/MIN
 
146 ML/MIN
 
3.17 SCFM
 
2.22 SCFM
 
0.93 SCFM
 
0.13 SCFH
 
49 ML/MIN
 
1.2 SCFH
 
18.8 ML/MIN
 
1 SCFH
 
90 M/MIN
 
.02 ML/MIN
 
8.3 ML/MIN
 
5.77 ML/MIN
 
330 L/MIN
 
51 ML/MIN
 
 
66 ML/MIN
 
1 SCFH
 
 
3.4 SCFM
 
 
2.6 SCFH
 
 
30 SCFM
 
 
1.0 SCFM
 
3 SCFM
 
2.6 SCFH
 
2.7 SCFM
 Max Flow Rate Air  
100 SCFH
 
77 L/MIN
 
77 L/MIN
 
85 SCFH
 
25.76 SCFM
 
25.76 SCFM
 
105.70 SCFM
 
44 SCFH
 
23.5 L/MIN
 
120 SCFH
 
52.5 L/MIN
 
4000 LPM
 
77 L/MIN
 
15 ML/MIN
 
29.3 L/MIN
 
59.4 L/MIN
 
630 L/MIN
 
66.3 L/MIN
 
 
20.5 L/MIN
 
200 SCFH
 
 
15 SCFM
 
 
62 SCFM
 
 
230 SCFM
 
 
20 SCFM
 
245 SCFM
 
62 SCFM
 
350 SCFM
 Min Flow Rate Water  
1.1 GPH
 
1.1 ML/MIN
 
1.1 ML/MIN
 
24.9 ML.MIN
 
0.78 GPM
 
0.55 GPM
 
0.17 GPM
 
0.011 GPH
 
0.537 ML/MIN
 
0.14 GPH
 
0.196 ML/MIN
 
50 ML/MIN
 
1.1 ML/MIN
 
0.0002 ML/MIN
 
0.251 ML/MIN
 
0.07 ML/MIN
 
9 ML/MIN
 
22 ML/MIN
 
5 GPM
 
0.72 ML/MIN
 
2.5 GPH
 
1.0 GPM
 
0.8 GPM
 
40 GPM
 
7 GPH
 
10 GPM
 
20 GPM
 
0.25 GPM
 
0.25 GPM
 
0.74 GPM
 
7 GPH
 
0.64 GPM
 Max Flow Rate Water  
20 GPH
 
1.9 L/MIN
 
1.9 L/MIN
 
1350 ML/MIN
 
6.28 GPM
 
6.28 GPM
 
23.10 GPM
 
8 GPH
 
573 ML/MIN
 
30 GPH
 
2.0 L/MIN
 
75 L/MIN
 
1.9 L/MIN
 
0.12 ML/MIN
 
829 ML/MIN
 
59.4 L/MIN
 
20 ML/MIN
 
2.08 L/MIN
 
200 GPM
 
580 ML/MIN
 
40 GPH
 
100 GPM
 
5 GPM
 
1900 GPM
 
20 GPM
 
40 GPM
 
175 GPM
 
20 GPM
 
20 GPM
 
116 GPM
 
20 GPM
 
132 GPM
 Max Temp  
100°F(37.8°C)
 
180°F(82.2°C)
 
180°F(82.2°C)
 
250°F(121°C)
 
250°F(121°C)
 
250°F(121°C)
 
200°F(93.3°C)
 
100°F(37.8°C)
 
100°F(37.8°C)
 
250°F(121°C)
 
200°F(93.3°C)
 
150°F(65.6°C)
 
180°F(82.2°C)
 
180°F(82.2°C)
 
150°F(65.6°C)
 
200°F(93.3°C)
 
180°F(82.2°C)
 
200°F(93.3°C)
 
70°F(21°C)
 
100°F(37.8°C)
 
70°F(21°C)
 
160°F(71°C)
 
250°F(121°C)
 
190°F(87.8°C)
 
130°F(54°C)
 
212°F(100°C)
 
150°F(65.6°C)
 
150°F(65.6°C)
 
120°F(48.9°C)
 
200°F(93.3°C)
 
130°F(54°C)
 
200°F(93.3°C)
 Max Pressure (psi)  
130
 
125
 
125
 
200
 
300
 
300
 
312
 
150
 
150
 
200
 
200
 
100
 
125
 
125
 
60
 
200
 
50
 
200
 
125
 
130
 
100
 
125
 
200
 
150
 
125
 
150
 
130
 
150
 
120
 
250
 
125
 
300
 Accuracy  
10% of Full Scale
 
2% of Reading
 
2%-5% of Reading
 
5% of Full Scale
 
2% of Full Scale
 
2% of Full Scale
 
2% of Full Scale
 
10% of Full Scale
 
5% of Full Scale
 
10% of Full Scale
 
2% of Full Scale
 
2-5% of Full Scale
 
5% of Reading
 
5% of Reading
 
2% of Full Scale
 
2% of Full Scale
 
2% of Reading
 
3-5% of Full Scale
 
3-5% of Full Scale
 
4-6% of Full Scale
 
4% of Full Scale
 
3% of Full Scale
 
10% of Full Scale
 
10% of Full Scale
 
2-6% of Full Scale
 
3% of Full Scale
 
3% of Full Scale
 
5% of Full Scale
 
5% of Full Scale
 
3% of Full Scale
 
2%-6% of Full Scale
 
2% of Full Scale
 Connections  
1/8" FNPT
 
1/4",1/2" MNPT
 
1/8",1/4" NPT
 
1/4" FNPT
 
1/2", 3/4",1" NPT
 
1/2",3/4" NPT
 
3/4" NPT
 
1/4" FNPT
 
1/4" FNPT
 
1/4" FNPT
 
1/8" FNPT
 
1/8", 1/4", 1" FNPT
 
1/4",1/2" MNPT
 
1/4" NPT
 
1/8" FNPT
 
1/8" FNPT
 
1/2"FNPT
 
1/8" FNPT
 
1",1.5",2" NPT
 
1/8" FNPT
 
1/8" FNPT
 
1/2", 3/4", 1",2" FNPT
 
3/8" NPT
 
1",1.5", 2",3",4",6",8" Pipe
 
1/4", 1/2", 1" FNPT
 
1" FNPT
 
2" FNPT
 
1/4",3/8",1/2",3/4",1"FNPT
 
1/4",3/8",1/2",3/4",1"MNPT
 
1/2",1",2" FNPT
 
1/4", 1/2", 3/4", 1" FNPT
 
1/2",1",1.5",2" FNPT
 Valve  
Yes
 
No
 
Yes
 
Yes
 
No
 
No
 
No
 
Yes
 
Yes
 
Yes
 
Yes
 
Yes
 
No
 
No
 
Yes
 
Yes
 
No