B427Hx320/1P-SC-S / 4xDN100C cs

B427Hx320/1P-SC-S / 4xDN100C cs designates a SWEP B427 brazed plate heat exchanger with 320 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. The /1P-SC fields read as single pass, with 316/316L stainless steel plates and a copper braze. The closing S is the pressure class: 31 bar at 155 C. The connection field reads / 4xDN100C cs. The B427 plate pack measures 694 x 304 mm (27.32 x 11.97 in) on 567 x 179 mm port centres, and by SWEP's published weight formula a 320-plate unit comes to about 219.3 kg (483.5 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.