... Plate Heat Exchanger, Double Wall Plate Heat Exchanger, Dual Wall Heat Exchanger, CE, UL, TUV,ISO9001:2000 Technical parameterProduct nameDouble Wall Brazed Plate Heat Exchanger, Double Wall Plate ... Acceptable High Vacuum Brazing Systems RVSB-1124 5 3.0 Acceptable Numerical Controlled Wire Electric ... Washing 3.Assembly 1 4.Assembly 2 5.Vacuum Brazing 6.Packing Certification: Certified Picture ...