B18Hx80/1P-SC-U 4xS28.58&W35.1

This is the 80-plate B18: SWEP designation B18Hx80/1P-SC-U 4xS28.58&W35.1. 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. It is catalogued with 4xS28.58&W35.1 connections. The B18 plate pack measures 377 x 119.5 mm (14.84 x 4.7 in) on 329 x 72 mm port centres, and by SWEP's published weight formula a 80-plate unit comes to about 24.1 kg (53.1 lb) dry. The frame is published to 9 m3/h (39.63 GPM) - a port limit rather than a design flow. For a new duty, send the inlet temperature on each side and the flows, and we will say immediately whether this plate count is the right one.