B8LASHx40/1P-SC-M 4x3/4"&16(20)

B8LASHx40/1P-SC-M 4x3/4"&16(20) designates a SWEP B8LAS 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 4x3/4"&16(20). The B8LAS plate pack measures 317.7 x 76.2 mm (12.51 x 3.00 in) on 278 x 40 mm port centres, and by SWEP's published weight formula a 40-plate unit comes to about 3.2 kg (7.1 lb) dry. Maximum flow for the frame is 4 m3/h (17.61 GPM); that is a ceiling for the ports, not a duty point. Thermal performance depends on the duty as much as on the part number, so include the fluids if the unit is going into a new application.