The key specifications of the Copper Tube-in-Tube Models Capacity 40 CFM Air Cooled are — Nominal Capacity: 40 cfm; Electrical Connection: Yes 220V/ 1ph, 50Hz; Air Connection: 1/2'BSP(F) In I Out; Rated Power(kW): 0.29. These specifications are based on the standard GEM Equipments design; always verify against your machine's requirement before use. GEM Equipments Pvt. Ltd., established in 1984 and ISO 9001:2015 certified, is one of India's leading manufacturers of compressed air dryers, cooling towers, industrial chillers, and compressed air treatment accessories, based in Coimbatore, Tamil Nadu.