Get current pricing for Helical, HELICAL-21887-ID Helical Screw Compressor. Model 7cdl11h. 21403. Rated For 1,265 Cfm @ 18 Psig. 100 Hp U.s. Electric Motor, 1780 Rpm, 230/460 Volt, 405t Frame. V-b . Product Category: Process Equipment, Sub Category: Process Blowers: