Application Summary

Application

SCR/DPF

Description

Removal of nitrogen oxides from diesel exhaust using selective catalytic reduction (SCR)

How It’s Used

Urea is injected into the exhaust port of the diesel engine using a gear pump. Urea combines with the exhaust gases and converts nitrogen oxides into nitrogen and water in the catalytic converter.

Key Feature

Smooth flow, Freeze Resistant, Rugged

End Equipment

SCR/DPF modules for diesel emissions control

Pump Function

Dosing

Fluids

Urea

Flow Rate

10 to 100 mL/min

Differential Pressure

<8 bar

PUMPING REQUIREMENTS

WSF SOLUTIONS

Corrosion Resistance

Pump body material: The flow-through parts are made of 316L stainless steel with precision processing.

Sealing Material

PTFE, neoprene and perfluoroether are available.

Gear Material

The gear shaft adopts P+C combination, i.e. ceramic shaft + imported PEEK gear hobbing + gear grinding + post-processing strengthening treatment, etc. It has high corrosion resistance, improves the wear resistance of the gear, and can effectively handle fluids such as urea.

Small and compact, providing solutions for limited spaces

The compact design of the WSF precision micro gear pump allows it to be easily integrated into existing SCR systems

High-precision flow transmission to ensure exhaust gas treatment effect

WSF precision micro gear pump can provide accurate flow and pressure output. In the SCR system, the precise injection of urea solution into the catalyst reactor to fully react with NOx in the exhaust gas is the key.

Corrosion resistance improves equipment reliability

The corrosion resistance makes the WSF precision micro gear pump a reliable choice in the SCR exhaust gas treatment industry. It can operate continuously in harsh working environments to ensure the stability and reliability of the system.

WSF gear pump products optimized for this application

WSF gear pumps are most commonly used in this application. They are the most commonly used solution in SCR applications.