# Operazioni Code Description
21 HE-GA Heat Exchanger, gas/gas
22 HE-GA-LP Heat Exchanger, gas/gas, Low Pressure
23 HE-GA-HP Heat Exchanger, gas/gas, High Pressure
24 HC-LI Air cooler, liquid
25 HC-LI-LP Air cooler, liquid, Low Pressure
26 HC-LI-HP Air cooler, liquid, High Pressure
27 HC-GA Air cooler, gas
28 HC-GA-LP Air cooler, gas, Low Pressure
29 HC-GA-HP Air cooler, gas, High Pressure
30 BOIL Boiler
31 BOIL-LP Boiler , Low Pressure
32 BOIL-HP Boiler , High Pressure
33 HM-INT Electrical Heater, internal component
34 REA Reactor, high temperature
35 FUR Furnace/thermal reactor
36 CHI Chiller (air/water)
37 PU Pump
38 KG Integral Gear Compressors
39 KZ Miscellaneous compressors/blowers/ventilators
40 KA Centrifugal compressors