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Engine NOx Sensor

Car NOx Sensor

Nitrogen Oxide NOx Sensor

Truck Blower Motor

Urea Doser Pump

Truck ABS Sensor

Exhaust Temperature Sensor

Crankshaft Position Sensor

Truck Pressure Sensor

Power Window Switch

VGT turbo actuator
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Company news about What is the DEF pump?

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What is the DEF pump?

2025-07-21

A ‌DEF pump‌ (Diesel Exhaust Fluid pump) is a specialized device designed to transfer DEF (Diesel Exhaust Fluid, also known as AdBlue®) from a storage tank to a vehicle's ‌SCR (Selective Catalytic Reduction)‌ system, which reduces harmful nitrogen oxide (NOx) emissions from diesel engines.

Key Features:

Function‌：

Extracts DEF and delivers it to the SCR system at precise flow rates to ensure efficient NOx conversion.
Some models include adjustable pressure relief valves and welded flanges for durability.

Construction‌：

Typically made of ‌316 stainless steel‌ for corrosion resistance.
May incorporate wear-resistant components like ‌PTFE seals‌ and ‌Duravane vanes‌.

Applications‌：

Used in ‌heavy-duty diesel vehicles‌, construction machinery, and other equipment requiring emission compliance.
Integral to SCR systems in commercial trucks and industrial engines.
Notes:
DEF is a non-toxic urea-based solution that decomposes into ammonia, which reacts with NOx in the SCR catalyst.
Proper pump maintenance prevents contamination and ensures consistent DEF dosing.

 

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News Details
Home > News >

Company news about-What is the DEF pump?

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News

Cases

What is the DEF pump?

2025-07-21

A ‌DEF pump‌ (Diesel Exhaust Fluid pump) is a specialized device designed to transfer DEF (Diesel Exhaust Fluid, also known as AdBlue®) from a storage tank to a vehicle's ‌SCR (Selective Catalytic Reduction)‌ system, which reduces harmful nitrogen oxide (NOx) emissions from diesel engines.

Key Features:

Function‌：

Extracts DEF and delivers it to the SCR system at precise flow rates to ensure efficient NOx conversion.
Some models include adjustable pressure relief valves and welded flanges for durability.

Construction‌：

Typically made of ‌316 stainless steel‌ for corrosion resistance.
May incorporate wear-resistant components like ‌PTFE seals‌ and ‌Duravane vanes‌.

Applications‌：

Used in ‌heavy-duty diesel vehicles‌, construction machinery, and other equipment requiring emission compliance.
Integral to SCR systems in commercial trucks and industrial engines.
Notes:
DEF is a non-toxic urea-based solution that decomposes into ammonia, which reacts with NOx in the SCR catalyst.
Proper pump maintenance prevents contamination and ensures consistent DEF dosing.

 

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