How to differentiate Fans, Blowers, Compressors

Fans/ Blowers/ Compressors are differentiated based on Specific Pressure (Discharge Pressure/Suction Pressure)

·         Fans                 : Sp. Pr. < 1.11

·         Blowers           : Sp. Pr. 1.11 – 1.20

·         Compressor     : Sp. Pr. > 1.20