B80SHx20/1P-SPS-M 4x1 1/4"&28U

Part number B80SHx20/1P-SPS-M 4x1 1/4"&28U is the SWEP B80S frame carrying 20 plates. Its H plates are the high-theta pattern - the choice when the leaving temperature is tight and the pump has head to spare. The /1P-SPS fields read as single pass, with 316 stainless steel plates and a stainless, copper free braze. The closing M is the pressure class: up to 45 bar at 135 C, fatigue tested. It is catalogued with 4x1 1/4"&28U connections. The B80S 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 20-plate unit comes to about 6.8 kg (15.0 lb) dry. Maximum flow for the frame is 17 m3/h (74.85 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.