Compact Brazed Plate Heat Exchanger - great for Solar heating, SVO / WVO oil-preheating applications for trucks, cars and boats, Beer and Wort Chilling, and many other heating and cooling applications. Unit Dimensions: 3"x8" - 30 plates - 316L Stainless Steel - Copper Brazed - 3/4" MNPT Ports - Flow Rate: 15 GPM max - Design pressure 435 psi