name: plate heat exchanger model: b3-12a unit heat exchange area: 0.012m² maximum flux: 4m3/h material: 316l or 304 stainless steel weld material: copper or nickel with a purity of 99.9% thickness of the sheet: 0.3mm liquid hold-up: 0.018l/each passage quantity of max plate: 60 design pressure: 3.0mpa testing pressure: 2.0mpa or 4.5mpa design temperature : -195 -- +220 the way of linking: the biggest screw thread pipe of water:3/4", the biggest welded pipe of liquid:7/8 heat transferred: 1-5kw area of application: hanging boilers, water heaters, low temperature experiment equipment, small-sized refrigeration equipment, etc.