B35TH0x80/1P-SC-S 4x2"

B35TH0x80/1P-SC-S 4x2" designates a SWEP B35T brazed plate heat exchanger with 80 plates in the pack. The digit after the plate letter (H0) 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 4x2". 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 80-plate unit comes to about 29.0 kg (63.9 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. Depth is the one dimension that changes accross the plate counts of a series, so measure the space behind the unit before moving to a larger pack.