B35TM0x60/1P-SC-S 4x2"(54)

This is the 60-plate B35T: SWEP designation B35TM0x60/1P-SC-S 4x2"(54). The digit after the plate letter (M0) 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. It is catalogued with 4x2"(54) connections. The B35T plate pack measures 393 x 243 mm (15.47 x 9.57 in) on 324 x 174 mm port centres, and by SWEP's published weight formula a 60-plate unit comes to about 23.9 kg (52.6 lb) dry. The frame is published to 27 m3/h (118.88 GPM) - a port limit rather than a design flow. Where a nameplate is worn, the plate count and the connection sizes are usually enough to separate this build from its neighbours in the series.