www.pmmag.com/articles/88142-indirect-pool-heater-by-diversified-heat-transfer
Indirect Pool Heater by Diversified Heat Transfer
April 1, 2003

E-ZEE FLOW by Diversified Heat Transfer Inc. stretches dollars and the pool season. It uses energy from an existing boiler and comes in a full range of sizes. E-ZEE FLOW accommodates swimming pools, spas and hot tubs for residential and commercial applications. Designed to perform at high fluid velocities with low pressure drops.