B320HTHx257/2P-SC-S 2x2 1/2" / 2x2 1/2"

B320HTHx257/2P-SC-S 2x2 1/2" / 2x2 1/2" designates a SWEP B320HT brazed plate heat exchanger with 257 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: /2P is two 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 2x2 1/2" / 2x2 1/2" connections. The B320HT plate pack measures 525 x 243 mm (20.67 x 9.57 in) on 441 x 159 mm port centres, and by SWEP's published weight formula a 257-plate unit comes to about 113.3 kg (249.8 lb) dry. The frame is published to 61.7 m3/h (271.66 GPM) - a port limit rather than a design flow. 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.