Flow Rates; Heat Exchanger Pressure Drop Tables - Raypak 336A Installation & Operating Instructions Manual

FLOW RATES

MODEL PIPE SIZE
206/207 1-1/4"–1-1/2" - 2"
266/267 1-1/4"–1-1/2" - 2"
336/337 1-1/4"–1-1/2" - 2"
406/407 1-1/4"–1-1/2" - 2"
POLYMER HEADERS

HEAT EXCHANGER PRESSURE DROP TABLES

POLYMER HEADER (STANDARD MODELS)
PLASTIC INTERNAL BAFFLE
(Manufactured after 11/08)
PRESSURE DROP (FT OF HEAD)
FLOW
GPM
206/207 266/267
20 4.0
25 4.0
30 4.0
35 4.0
40 4.6
50 4.6
60 4.6
70 4.6
80 4.6
90 6.9
100 8.1
110 10.4
120 11.0
125 11.5
MIN. GPM MAX. GPM*
20 125
25 125
35 125
40 125
336/337 406/407
4.6
5.2
5.8 5.2
5.8 5.2 5.2
6.3 6.9 6.9
6.9 6.9 6.9
8.1 9.2 9.2
9.2 9.8 9.8
10.4 10.4 10.4
11.0 12.1 12.1
11.5 13.3 13.3
12.7 17.9 17.9
13.8 20.2 20.2
*When flow rates exceed maximum GPM an external auxil-
iary bypass valve is required. See external bypass valve
section for details.
CAST IRON HEADERS (ASME)
CAST IRON HEADER (ASME MODELS)
PRESSURE DROP (FT OF HEAD)
FLOW
GPM
206/207
20 1.8
30 2.2
40 2.5
50 2.7
60 3.3
70 4.3
80 5.5
90 6.8
100 8.2
21
266/267 336/337 406/407
8.0
9.0 9.0
9.8 9.8
10.5 10.5
11.0 11.0
11.5 11.5
14.0 14.0
17.0 17.0
9.0
9.8
10.5
11.0
11.5
14.0
17.0