# Operazioni Code Description
201 CM Sand filter/"Dual media" filter
202 CA Regenerative filter
203 CL Cartridge filter
204 CY Miscellaneous filters
205 GC Specific filters for H.V.A.C.
206 GY Chemical filter scrub
207 CQ Coalescence filter and separator
208 CE Static mixer
209 CJ Mixer/Agitator (motorized)
210 GL UV type sterilizer (for water), Water softener and Demineraliser
211 ET Transformers and autotransformers
212 EM MCC switchgears
213 EH Medium Voltage switchgears
214 TB Atmospheric storage tank, cylindrical (floating roof)
215 TC Atmospheric storage tank, not cylindrical
216 TD Spherical or spheroid tank
217 TE Bin bulk storage
218 TG Silos
219 TH Drainage separator basin
220 TJ Diaphragm Tank