DIESEL EXHAUST FLUID

STX DEF Series Stainless Steel Transport Pumps for Diesel Exhaust Fluid (DEF) Spec Sheet 203-003 Section: 203 Effective: March 2012 Replaces: May 2011 STX3-DEF STX2A-DEF & STX1220A-DEF How Blackmer’s sliding vane action works Design Blackmer’s STX DEF Series pumps meet or exceed all industry specifications for DEF Aqueous Urea Solutions (AUS32). Made from 316 stainless steel, the pumps feature external ball bearings, non-metallic Duravanes, PTFE elastomers and Blackmer chemical mechanical seals. The design also includes an adjustable relief valve, weld flanges and self-priming capability. The STX3-DEF has a versatile mounting bracket. Application Applications include DEF transport and railcar loading and off-loading, as well as DEF tote filling. The STX3-DEF offers flow rates up to 250 gpm (946 L/min) with differential pressures up to 125 psi (8.6 bar) and maximum speed of 800 rpm. The STX1220A-DEF offers flow rates up to 92 gpm (348 L/min) and maximum speed of 1,200 rpm, and the STX2A-DEF provides flow rates to 60 GPM (227 L/min) and maximum speed of 780 rpm. Benefit Blackmer’s STX3-DEF offers fast fluid off-loading. A typical off-loading of a 6,000 gallon (22,700 liter) tanker can be unloaded as quickly as 24 minutes. Blackmer’s non-metallic vanes self-compensate for wear and allow the STX DEF Series pumps to run dry for short periods of time for self-priming and blowing lines clean, with out pump damage. The STX DEF Series is designed to offer easy maintenance because the internal wear is limited almost completely to the sliding vanes, which can be replaced with ordinary hand tools.