New! Heat Exchangers Phoenix Systems, Inc., is now a distributor of Fluorotherm chemically resistant and ultrapure Teflon and other fluoropolymer Heat Exchangers, Extruded fluoropolymer tubing and rod, Retractable coiled tubing, Custom fabricated. formed and machined plastics products. Immersion Heat Exchangers Shell & Tube Heat Exchangers Acid Recovery Heat Exchangers New! Hydrochloric Acid ...