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Flow Rates and Pressure Drops
Plastic Internal Baffle - Manufactured after 11/08
Cast Iron Header (ASME Models)
Pressure Drop (Ft of Head)
Flow
GPM
206/207
20
1.8
30
2.2
8.0
336/337
406/407
9.0
9.0
9.0
2.7
9.8
9.8
9.8
60
3.3
10.5
10.5
10.5
5.2
70
4.3
11.0
11.0
11.0
6.9
6.9
80
5.5
11.5
11.5
11.5
6.9
6.9
6.9
90
6.8
14.0
14.0
14.0
4.6
8.1
9.2
9.2
100
8.2
17.0
17.0
17.0
80
4.6
9.2
9.8
9.8
90
6.9
10.4
10.4
10.4
100
8.1
11.0
12.1
12.1
110
10.4
11.5
13.3
13.3
120
11.0
12.7
17.9
17.9
125
11.5
13.8
20.2
20.2
Pressure Drop (Ft of Head)
Flow
GPM
206/207
20
4.0
25
4.0
4.6
40
2.5
30
4.0
5.2
50
35
4.0
5.8
5.2
40
4.6
5.8
5.2
50
4.6
6.3
60
4.6
70
266/267
336/337
406/407
266/267
Flow Rates
Model
Min GPM
Max GPM
206/207
20
125
266/267
25
125
336/337
35
125
406/407
40
125
FLOW RATES & PRESS DROPS
Polymer Header (Standard Models)
35