B439Hx260/1P-SC-S / 4xDN100C cs

This is the 260-plate B439: SWEP designation B439Hx260/1P-SC-S / 4xDN100C cs. 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 / 4xDN100C cs connections. 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 260-plate unit comes to about 247.1 kg (544.8 lb) dry. Maximum flow for the frame is 155.5 m3/h (684.65 GPM); that is a ceiling for the ports, not a duty point. Check the connection field separately from the plate count: two units can be consistent in every other field and still not pipe up.