Editorial Technical Reference

Integrated Filter

This page explains how Integrated Filter is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A filtration component integrated within the DEF supply pump system to remove contaminants from diesel exhaust fluid.

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Integrated Filter in a manufacturing environment
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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
ParameterTypical rangeNotes & selection driver
Filtration Rating10–20 μmFiner rating increases pressure dropISO 16889
Flow Rate5–15 L/minHigher flow requires larger filterISO 3968
Burst Pressure3.0 MPaSafety factor of 2x operating pressureISO 2941
Operating Temperature-40–85 °COutside range may degrade seal materialISO 607
Media CompatibilityDEF (AUS32)Must resist urea crystallizationISO 22241
Housing MaterialStainless steel 304Corrosion resistance in DEF environmentASTM A240
Seal MaterialFKM (Viton)Resistant to DEF and temperature extremesASTM D2000
Connection SizeG1/4–G1/2 inchMatch pump inlet/outlet portsISO 228-1
Overall Dimensions80–120 mmLength and diameter vary with flow rating
Weight0.3–0.8 kgAffects mounting and vibration
Pressure Drop≤0.05 MPaAt 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

Application & selection

Application Fit & Sizing Matrix

Operational Limits
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
Media Compatibility
✓ Polypropylene media ✓ Stainless steel housing ✓ Nitrile rubber seals
Unsuitable: High chloride environments
Sizing Data Required
  • DEF system flow rate (L/min)
  • Required filtration efficiency (microns)
  • Maximum allowable pressure drop (bar)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Filter Media Degradation
Cause: Chemical incompatibility with process fluid leading to swelling, embrittlement, or dissolution of filter media; excessive differential pressure causing mechanical rupture; thermal cycling beyond design limits.
Seal/Bypass Failure
Cause: Improper installation torque causing gasket compression set or extrusion; vibration-induced loosening of housing bolts; thermal expansion mismatch between housing and sealing components; particulate buildup on sealing surfaces.
Maintenance Indicators
  • Sustained high differential pressure reading (>80% of design maximum) with no recovery after backwash/cleaning
  • Visible fluid leakage at housing seams or downstream contamination in clear sight glasses
Engineering Tips
  • Implement condition-based monitoring with trending of differential pressure, flow rate, and particle count data to optimize replacement intervals and detect abnormal degradation patterns
  • Establish standardized installation procedures including torque sequencing, seal lubrication verification, and post-installation pressure testing to prevent premature seal failures

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 16889:2008 (Hydraulic fluid power - Filters - Multi-pass method for evaluating filtration performance) ANSI/ASHRAE 52.2-2017 (Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size) DIN EN 1822-1:2019 (High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking)

Quoted from the published standard.

Manufacturing Precision
  • Filter media pore size: +/-5% of nominal rating
  • Housing sealing surface flatness: 0.05mm across any 100mm diameter
Quality Inspection
  • Pressure decay leak test (per ISO 2942) to verify structural integrity
  • Particle counting efficiency test (per ISO 16889) to validate filtration performance
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
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Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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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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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. See the editorial policy.

Related equipment

Applied To / Applications

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

DEF Supply Pump
View system integration details

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Integrated Filter.

DEF Filter Urea Filter SCR Filter

Data Basis

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

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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 12 October 2026

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