B80Hx40/1P-SC-M 2x35.1(27)+2x1 1/4"&28U(27)

B80Hx40/1P-SC-M 2x35.1(27)+2x1 1/4"&28U(27) designates a SWEP B80 brazed plate heat exchanger with 40 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 M is the pressure class: up to 45 bar at 135 C, fatigue tested. The connection field reads 2x35.1(27)+2x1 1/4"&28U(27). The B80 plate pack measures 526 x 119 mm (20.71 x 4.69 in) on 470 x 63 mm port centres, and by SWEP's published weight formula a 40-plate unit comes to about 9.2 kg (20.2 lb) dry. The frame is published to 16.9 m3/h (74.41 GPM) - a port limit rather than a design flow. For a new duty, send the inlet temperture on each side and the flows, and we will say immediately whether this plate count is the right one.