B12Lx60/1P-SC-S 4x1 1/4"(27)

B12Lx60/1P-SC-S 4x1 1/4"(27) designates a SWEP B12 brazed plate heat exchanger with 60 plates in the pack. The L plate is the acute chevron, which gives up some heat transfer per plate for a lower pressure drop - the usual answer when the available head is small. 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. It is catalogued with 4x1 1/4"(27) 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 60-plate unit comes to about 7.0 kg (15.3 lb) dry. The frame is published to 16.9 m3/h (74.41 GPM) - a port limit rather than a design flow. If the duty has changed since the original equipment went in, send the flows and both inlet conditions and we will confirm whether this configuration still fits.