B427M1x240/1P-SC-S / 4xDN100C cs

This is the 240-plate B427: SWEP designation B427M1x240/1P-SC-S / 4xDN100C cs. The digit after the plate letter (M1) tracks port size and port centre distance rather than heat transfer, so on a replacement it is the field that decides whether the unit lines up with the existing pipework. The /1P-SC fields read as single pass, with 316/316L stainless steel plates and a copper braze. The closing S is the pressure class: 31 bar at 155 C. The connection field reads / 4xDN100C cs. The B427 plate pack measures 694 x 304 mm (27.32 x 11.97 in) on 567 x 179 mm port centres, and by SWEP's published weight formula a 240-plate unit comes to about 172.1 kg (379.5 lb) dry. The frame is published to 155.5 m3/h (684.65 GPM) - a port limit rather than a design flow. A like-for-like order needs only this string; we recommend adding the fluids and flows where the system has been altered.