V120THx70/1P-SC-M 22U(27)+42U(27)+2x1 1/2"&35.1(27)

V120THx70/1P-SC-M 22U(27)+42U(27)+2x1 1/2"&35.1(27) designates a SWEP V120T brazed plate heat exchanger with 70 plates in the pack. Its H plates are the high-theta pattern - the choice when the leaving temperature is tight and the pump has head to spare. Reading the string: /1P is single pass; -SC is 316/316L stainless steel plates joined with copper. The closing M is the pressure class: up to 45 bar at 135 C, fatigue tested. Connections are listed as 22U(27)+42U(27)+2x1 1/2"&35.1(27), in port order. The V120T plate pack measures 525 x 243 mm (20.67 x 9.57 in) on 456 x 174 mm port centres, and by SWEP's published weight formula a 70-plate unit comes to about 38.0 kg (83.8 lb) dry. Maximum flow for the frame is 27.4 m3/h (120.64 GPM); that is a ceiling for the ports, not a duty point. It is not neccessary to send drawings for a like-for-like replacement - the string above carries the whole build.