Integrated Filter for DEF Supply Pump Systems

Product Specifications

Technical details and manufacturing context for Integrated Filter

Definition

The Integrated Filter is a critical component of the DEF Supply Pump system designed to remove particulate matter, impurities, and contaminants from diesel exhaust fluid before it enters the pump and injection system. It ensures the purity of the DEF solution, preventing damage to sensitive components and maintaining optimal performance of the selective catalytic reduction (SCR) system in diesel engines. The filter is typically housed in a polypropylene body with pleated cellulose or synthetic filter media, and nitrile rubber seals. It is available in configurations with filtration ratings from 10 to 20 micrometers, flow rates from 5 to 15 liters per minute, and operating pressures from 1.0 to 1.6 MPa. The burst pressure is rated at 3.0 MPa, providing a safety factor of two times the operating pressure. The filter operates within a temperature range of -40 to 85 degrees Celsius and is compatible with DEF (AUS32) per ISO 22241. Housing material is stainless steel 304, and seal material is FKM (Viton) to resist DEF and temperature extremes. Connection sizes range from G1/4 to G1/2, overall dimensions from 80 to 120 mm, and weight from 0.3 to 0.8 kg. The pressure drop at rated flow is less than or equal to 0.05 MPa. These parameters are reference ranges; actual values must be confirmed for the specific model and application. The filter is designed to meet ISO 16889, ISO 3968, ISO 2941, ISO 607, ISO 22241, ASTM A240, ASTM D2000, and ISO 228-1 standards as applicable. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The Integrated Filter operates by forcing DEF fluid through a porous filter media (typically pleated paper or synthetic material) that traps particles and contaminants above a specific micron rating. As fluid flows from the DEF tank through the filter housing, contaminants are captured on the filter element while clean fluid passes through to the pump. Some designs incorporate bypass valves to maintain flow if the filter becomes clogged. The filter media's pore size determines the filtration rating, and the flow rate and pressure drop are influenced by the media's surface area and the filter's dimensions. The filter must be selected based on the pump's flow requirements and the acceptable pressure drop. Regular maintenance includes monitoring pressure drop and replacing the filter element when clogged. The filter's integrity is critical to prevent contamination of the SCR system, which could lead to injector fouling or catalyst damage.

Common Materials

Polypropylene housing, Pleated cellulose/synthetic filter media, Nitrile rubber seals

Technical Parameters

Parameter	Typical range	Notes & selection driver
Filtration Rating	10–20 μm	Finer rating increases pressure dropISO 16889
Flow Rate	5–15 L/min	Higher flow requires larger filterISO 3968
Burst Pressure	3.0 MPa	Safety factor of 2x operating pressureISO 2941
Operating Temperature	-40–85 °C	Outside range may degrade seal materialISO 607
Media Compatibility	DEF (AUS32)	Must resist urea crystallizationISO 22241
Housing Material	Stainless steel 304	Corrosion resistance in DEF environmentASTM A240
Seal Material	FKM (Viton)	Resistant to DEF and temperature extremesASTM D2000
Connection Size	G1/4–G1/2 inch	Match pump inlet/outlet portsISO 228-1
Overall Dimensions	80–120 mm	Length and diameter vary with flow rating
Weight	0.3–0.8 kg	Affects mounting and vibration
Pressure Drop	≤0.05 MPa	At rated flow; higher drop reduces pump efficiencyISO 3968

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Filter Housing
Contains the filter element and provides connection points to the DEF system

Material: Polypropylene or similar chemical-resistant plastic
Filter Element Part
Porous media that physically traps contaminants from the DEF fluid

Material: Pleated cellulose or synthetic fiber
Seals/Gaskets Part
Prevent leakage between housing components and connections

Material: Nitrile rubber or similar DEF-compatible elastomer
Bypass Valve
Allows fluid to bypass the filter element if it becomes clogged, preventing system failure

Material: Stainless steel spring with elastomer seals

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Integrated Filter.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

DEF Supply Pump

View system integration details

Manufacturers of Integrated Filter

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Jiangxi Ruiqian Auto Parts Co., Ltd.

Shangrao, Jiangxi, CN

Founded 1988300+ staff10,000+ Square Meters

ISO-TS16949:2009 ISO9001:2008 IATF 16964:2016

Also makes: Fuel Filter, Air Filter, Filter Assembly and 5 more

Stated by the company · profile compiled by CNFX from public sources

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the filtration rating of the Integrated Filter?

The filtration rating is typically 10 to 20 micrometers, as per ISO 16889. However, the exact rating depends on the specific model and application. Always verify with the manufacturer.

What is the operating pressure range?

The operating pressure range is 1.0 to 1.6 MPa, with a burst pressure of 3.0 MPa (safety factor of 2x). Confirm the required pressure for your system.

What materials are used in the filter?

The housing is typically polypropylene or stainless steel 304, the filter media is pleated cellulose or synthetic, and seals are made of nitrile rubber or FKM (Viton). Material compatibility with DEF is essential.

How do I know when to replace the filter?

Monitor the pressure drop across the filter. If it exceeds the rated maximum (≤0.05 MPa at rated flow), the filter may be clogged and should be replaced. Also, follow the manufacturer's maintenance schedule.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 6 bar
flow rate:	0.5 to 10 L/min
temperature:	-40°C to 85°C
slurry concentration:	Up to 0.5% solids by weight

Integrated Filter

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards