B35TH0x53x52/2S-SC-S 4x2"(54) / 2x2"(54)

B35TH0x53x52/2S-SC-S 4x2"(54) / 2x2"(54) designates a SWEP B35T brazed plate heat exchanger with 53x52 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 closing S is the pressure class: 31 bar at 155 C. It is catalogued with 4x2"(54) / 2x2"(54) connections. The B35T plate pack measures 393 x 243 mm (15.47 x 9.57 in) on 324 x 174 mm port centres. Maximum flow for the frame is 27 m3/h (118.88 GPM); that is a ceiling for the ports, not a duty point. 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.