B12Hx30/1P-SC-S 4x1 1/4"&28U

This is the 30-plate B12: SWEP designation B12Hx30/1P-SC-S 4x1 1/4"&28U. Its H plates are the high-theta pattern - the choice when the leaving temperature is tight and the pump has head to spare. 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 4x1 1/4"&28U connections. The B12 plate pack measures 287 x 117 mm (11.3 x 4.61 in) on 234 x 63 mm port centres, and by SWEP's published weight formula a 30-plate unit comes to about 3.5 kg (7.7 lb) dry. Maximum flow for the frame is 16.9 m3/h (74.41 GPM); that is a ceiling for the ports, not a duty point. If the flow on either side would excede the published ceiling, the answer is a larger frame, not more plates on this one.