B28Hx36/1P-SC-S 4x1 1/4"(D24.70)

B28Hx36/1P-SC-S 4x1 1/4"(D24.70) designates a SWEP B28 brazed plate heat exchanger with 36 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 1/4"(D24.70), in port order. The B28 plate pack measures 526 x 119 mm (20.71 x 4.69 in) on 470 x 63 mm port centres, and by SWEP's published weight formula a 36-plate unit comes to about 8.0 kg (17.6 lb) dry. The frame is published to 16.9 m3/h (74.41 GPM) - a port limit rather than a design flow. Where a nameplate is worn, the plate count and the connection sizes are usually enough to seperate this build from its neighbours in the series.