B12MTx70/1P-SC-S 4x1 1/4"&28U(27)

B12MTx70/1P-SC-S 4x1 1/4"&28U(27) designates a SWEP B12 brazed plate heat exchanger with 70 plates in the pack. The /1P-SC fields read as single pass, with 316/316L stainless steel plates and a copper braze. The closing S is the pressure class: 31 bar at 155 C. The connection field reads 4x1 1/4"&28U(27). The B12 plate pack measures 287 x 117 mm (11.3 x 4.61 in) on 234 x 63 mm port centres, and by SWEP's published weight formula a 70-plate unit comes to about 8.1 kg (17.9 lb) dry. Maximum flow for the frame is 16.9 m3/h (74.41 GPM); that is a ceiling for the ports, not a duty point. Thermal performance depends on the duty as much as on the part number, so include the fluids if the unit is going into a new application.