The Blackmer STX1220A-DEF is a 2-inch, high-speed 316 stainless steel truck-mounted sliding vane pump specifically designed for Diesel Exhaust Fluid transfer applications. This specially cleaned pump meets or exceeds all industry specifications for DEF Aqueous Urea Solutions AUS32. Achieving a maximum speed of 1,200 rpm with flow rates from 45 to 92 gpm, the STX1220A-DEF features a double-ended shaft for clockwise or counterclockwise rotation, external ball bearings, non-metallic Duravanes, and Blackmer chemical mechanical seals. With self-priming capability, extended dry run performance, line-stripping abilities, and an adjustable relief valve, this pump delivers reliable high-speed DEF transfer for demanding applications.
