NIH — Nozzle-in-Head
* The 150 psig (1034 kPa) water b ox cover weights are inc lud ed in the dry weight shown in Ta ble 10.
† Two different waterbox c ov e rs are present on 2-pass mach ines. The weight shown in this table
represents the weight of the waterbox cover that co nt ains the nozzles. A blank wat erbox cover is also
present on 2-pass units . The weight of the blank wate r box c ov e r is identical to the weight of the same
size marine waterbox cover. Refer to Table 14.
Table 15 — NIH Waterbox Cover Weights*
Heat Exchanger
Size Passes
Design Maximum
Water Pressure Cooler Condenser
psi kPa lb kg lb kg
41 – 48
1 150 1034 2997 1361 1735 788
300 2068 4225 1918 2510 1140
2150 1034 2984 1355 1885 856
300 2068 4188 1901 2590 1176
3 150 1034 3035 1378 1777 807
300 2068 4244 1927 2539 1153
51 – 57
1 150 1034 – 2032 923
300 2068 – 2940 1335
2150 1034 – 2649 1203
300 2068 – 3640 1653
3 150 1034 – – –
300 2068 – – –