B28Hx96/1P-SC-S 4x1 1/4"(D24.70)

B28Hx96/1P-SC-S 4x1 1/4"(D24.70) designates a SWEP B28 brazed plate heat exchanger with 96 plates in the pack. The H plate is the obtuse chevron: it gives the most heat transfer per plate and the most pressure drop, so it suits duties where approach temperature matters more than pump head. 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. It is catalogued with 4x1 1/4"(D24.70) connections. 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 96-plate unit comes to about 17.8 kg (39.3 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 separate this build from its neighbours in the series.