E8ASHx28/1P-SC-S 4x3/4"(20)

E8ASHx28/1P-SC-S 4x3/4"(20) designates a SWEP E8AS brazed plate heat exchanger with 28 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. It is catalogued with 4x3/4"(20) connections. The E8AS plate pack measures 315 x 74 mm (12.40 x 2.91 in) on 278 x 40 mm port centres, and by SWEP's published weight formula a 28-plate unit comes to about 2.1 kg (4.6 lb) dry. The frame is published to 4 m3/h (17.61 GPM) - a port limit rather than a design flow. Treat each side as an independent circuit when you ask for a quote: give both flows and what each fluid is.