B35TM0x30/1P-SC-S 4x2"

The B35TM0x30/1P-SC-S 4x2" is a 30-plate build of the SWEP B35T. 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. 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 4x2" 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 30-plate unit comes to about 16.2 kg (35.7 lb) dry. Maximum flow for the frame is 27 m3/h (118.88 GPM); that is a ceiling for the ports, not a duty point. Check the connection field separately from the plate count: two units can be consistent in every other field and still not pipe up.