35
6A
Hydronic piping
(continued)
Figure 6-2 Pressure Drop vs. Flow
Table 6A Temperature Rise Applications
Installation & Service Manual
NKC110
Delta T
GPM
FT/HD
Eq Ft of 1" Pipe
19.1°F
10.6
4.0
53
20°F
10.1
6.0
85
25°F
8.1
13.4
287
30°F
6.7
17.4
523
35°F
5.8
19.9
789
40°F
5.1
21.4
1085
45°F
4.5
22.5
1410
NKC150
Delta T
GPM
FT/HD
Eq Ft of 1" Pipe
26.0°F
10.6
4.0
53
30°F
9.2
9.6
162
35°F
7.9
14.1
317
40°F
6.9
17.0
490
45°F
6.1
19.0
679
NKC199
Delta T
GPM
FT/HD
Eq Ft of 1" Pipe
34.7°F
10.6
4.0
53
40°F
9.2
9.6
162
45°F
8.2
13.1
277
Assumed Equivalent Lengths (1" Pipe)
Fitting / Component
Eq Ft
90° Elbow
2.5
45° Elbow
1.0
Tee (straight run)
0.5
Tee (side port)
4.5
Ball Valve
4.3
Swing Check
4.5
Flow Check Valve (typical)
54.0
Y-Strainer
4.5
All equivalent pipe lengths are based on the minimum pipe size of one inch.
NOTICE
The data provided takes into account the boiler and integral pump. Flow determination is based solely on
piping external to the boiler.
NOTICE
In Primary/Secondary, only the boiler loop is considered when determining flow. In full flow applications, all
piping and equipment must be considered.
NOTICE
F I R E T U B E C O M B I
™
