B8THx20/1P-SC-M 4x3/4''&16

This is the 20-plate B8T: SWEP designation B8THx20/1P-SC-M 4x3/4''&16. 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-SC fields read as single pass, with 316/316L stainless steel plates and a copper braze. The closing M is the pressure class: up to 45 bar at 135 C, fatigue tested. It is catalogued with 4x3/4''&16 connections. The B8T plate pack measures 317 x 76 mm (12.48 x 2.99 in) on 278 x 40 mm port centres, and by SWEP's published weight formula a 20-plate unit comes to about 2.3 kg (5.2 lb) dry. The frame is published to 4 m3/h (17.61 GPM) - a port limit rather than a design flow. Check the connection field seperately from the plate count: two units can be consistent in every other field and still not pipe up.