B439Hx300/1P-SC-S / 4xDN100C cs(54)

B439Hx300/1P-SC-S / 4xDN100C cs(54) designates a SWEP B439 brazed plate heat exchanger with 300 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. Connections are listed as / 4xDN100C cs(54), in port order. 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 300-plate unit comes to about 282.7 kg (623.3 lb) dry. The frame is published to 155.5 m3/h (684.65 GPM) - a port limit rather than a design flow. Treat each side as an independant circuit when you ask for a quote: give both flows and what each fluid is.