B439Hx220/1P-SC-S / 4xDN100C cs(54)

B439Hx220/1P-SC-S / 4xDN100C cs(54) designates a SWEP B439 brazed plate heat exchanger with 220 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. 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. It is catalogued with / 4xDN100C cs(54) connections. The B439 plate pack measures 979 x 304 mm (38.54 x 11.97 in) on 854 x 179 mm port centres, and by SWEP's published weight formula a 220-plate unit comes to about 211.5 kg (466.3 lb) dry. Maximum flow for the frame is 155.5 m3/h (684.65 GPM); that is a ceiling for the ports, not a duty point. Where a nameplate is worn, the plate count and the connection sizes are usually enough to separate this build from its neighbours in the series.