B25THx90/1P-SC-S 4x1"(45)

B25THx90/1P-SC-S 4x1"(45) designates a SWEP B25T brazed plate heat exchanger with 90 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 S is the pressure class: 31 bar at 155 C. Connections are listed as 4x1"(45), in port order. The B25T plate pack measures 526 x 119 mm (20.71 x 4.69 in) on 479 x 72 mm port centres, and by SWEP's published weight formula a 90-plate unit comes to about 18.1 kg (39.9 lb) dry. The frame is published to 9 m3/h (39.63 GPM) - a port limit rather than a design flow. For a new duty, send the inlet temperture on each side and the flows, and we will say immediately whether this plate count is the right one.