B185Hx120/1P-SC-U 2x42.4&35.1+2x48.3&42U

B185Hx120/1P-SC-U 2x42.4&35.1+2x48.3&42U designates a SWEP B185 brazed plate heat exchanger with 120 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 U is the pressure class: 64 to 140 bar. Connections are listed as 2x42.4&35.1+2x48.3&42U, in port order. The B185 plate pack measures 425.2 x 203.2 mm (16.74 x 8 in) on 354 x 126 mm port centres, and by SWEP's published weight formula a 120-plate unit comes to about 63.7 kg (140.5 lb) dry. The frame is published to 38.8 m3/h (170.83 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.