tube side pressure: 14 bar@ 20/220°C (610 liter), shell: 8 bar@ 20/220°C (410 liter) evaporator is made up of (2) vertical heat exchangers joined together, 1st section 60 square meter with (1121) 12mm diameter x 1.5mm x 1.5m long 316L stainless steel tubes, 2nd section 191 square meter with (1121) 12mm diameter x 1.5mm x 4.5m long 316L stainless steel tubes, (2) expansion bellows, (2) 316L stainless steel coned heads (bottom with a jacket),