B80Hx76/1P-NC-S 4x1 1/4"

This is the 76-plate B80: SWEP designation B80Hx76/1P-NC-S 4x1 1/4". 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; -NC is AISI 304 stainless steel plates joined with copper. The closing S is the pressure class: 31 bar at 155 C. Connections are listed as 4x1 1/4", in port order. The B80 plate pack measures 526 x 119 mm (20.71 x 4.69 in) on 470 x 63 mm port centres, and by SWEP's published weight formula a 76-plate unit comes to about 15.1 kg (33.3 lb) dry. The frame is published to 16.9 m3/h (74.41 GPM) - a port limit rather than a design flow. If the flow on either side would excede the published ceiling, the answer is a larger frame, not more plates on this one.