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Product Overview

The Industrial Fluid Filter Unit is designed for particulate contamination control in hydraulic, lubrication, and industrial fluid circuits. It removes solid contaminants from the working fluid to help maintain the cleanliness level required by pumps, valves, bearings, hydraulic actuators, machine tools, and other fluid-sensitive components.

The filtration assembly consists of a pressure-rated filter housing, replaceable filter element, sealing system, and optional differential pressure monitoring or bypass protection. Depending on the application, the unit can be configured for pressure-line, return-line, or other industrial filtration duties.

Selection should be based on the required flow rate, operating pressure, fluid type, target cleanliness level, filtration rating, temperature, connection standard, and allowable pressure drop.

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Product Configuration & Construction

Filter Housing: Available configurations include carbon steel, stainless steel, aluminum alloy, or other specified housing materials according to operating pressure, fluid compatibility, and installation requirements.

Filter Element Media: Element construction can be configured with glass fiber, stainless steel wire mesh, cellulose, or other media according to filtration rating, fluid type, temperature, and contamination load.

Sealing Materials: NBR, FKM, EPDM, and other seal materials can be selected according to the working fluid and operating temperature. Seal compatibility should be confirmed against the actual fluid specification.

Bypass Valve: An internal bypass valve can be specified where required to protect the circuit from excessive differential pressure during cold starts or high contamination loading.

Differential Pressure Monitoring: Visual indicators, electrical switches, or differential pressure indicators can be configured to provide a service signal when the filter element reaches the specified pressure-drop limit.

Connection Options: Depending on the housing configuration, SAE flange, BSPP, NPT, metric, or other connection interfaces can be supplied.

Key Features

01/

Controlled Particle Removal: Filter elements are available in different filtration ratings to meet the cleanliness requirements of hydraulic and lubrication circuits. Actual particle retention performance should be evaluated according to the applicable test method and element specification.

02/

Flow-Optimized Housing: Internal flow passages are designed to provide the required filtration flow while controlling pressure loss across the housing and element.

03/

Pressure-Resistant Construction: Housing and element support structures are selected according to the specified working pressure and differential pressure requirements.

04/

Flexible Element Configuration: Different filter media, micron ratings, seal materials, and support structures can be specified according to fluid characteristics and operating conditions.

05/

Maintenance-Oriented Design: Threaded bowls, clamp-type covers, or other service configurations allow access to replaceable filter elements without replacing the complete housing.

06/

Condition Monitoring: Differential pressure indicators and switches can be integrated where monitoring of element loading is required.

Technical Specifications

Parameter	Available Specification
Application	Hydraulic, lubrication, coolant, and industrial fluid filtration
Nominal Flow Rate	10 L/min to 600 L/min, depending on housing and element configuration
Filtration Rating	1 um, 3 um, 5 um, 10 um, 20 um configurations, subject to element selection
Maximum Working Pressure	Up to 31.5 MPa, depending on housing design
Operating Temperature	Approximately -30°C to +110°C, subject to seal and element selection
Housing Materials	Carbon steel, stainless steel, aluminum alloy, or specified alternatives
Filter Media	Glass fiber, stainless steel mesh, cellulose, or specified media
Seal Options	NBR, FKM, EPDM, subject to fluid compatibility
Connection Options	SAE flange, BSPP, NPT, metric, or specified connections
Monitoring Options	Visual indicator, electrical switch, or differential pressure monitoring
Bypass Options	Available according to circuit design and specified bypass pressure

Applications

Hydraulic Systems:

Used in hydraulic power units, injection molding machines, stamping equipment, rolling mills, mobile hydraulic equipment, and other systems where particulate contamination can affect valves, pumps, and actuators.

Lubrication Systems:

Configured for circulating lubrication systems serving gearboxes, bearings, compressors, machine tools, and other equipment requiring controlled lubricant cleanliness.

Machine Tool Coolant Systems:

Can be configured for industrial coolant filtration where removal of machining particles is required before fluid recirculation.

Wind Turbine Hydraulic and Lubrication Systems:

Filter configurations can be selected for gearbox lubrication and hydraulic circuits according to the equipment manufacturer's cleanliness and pressure requirements.

Power Generation Equipment:

Applicable to lubrication and auxiliary fluid circuits used with turbines, compressors, and other rotating equipment, subject to fluid compatibility and system filtration requirements.

Manufacturing & Quality Control

Material Control:

Pressure-containing housing materials can be supplied with material documentation where required by the project specification.

CNC Machining:

CNC machining is used for critical housing features such as connection interfaces, sealing surfaces, mounting dimensions, and internal element locations.

Welding Control:

Welded housing configurations are manufactured according to the specified welding procedure and inspection requirements. Applicable weld inspection documentation can be provided for projects requiring additional verification.

Cleaning:

Filter housings and internal components can undergo cleaning procedures before final assembly to reduce residual machining and assembly contamination.

Pressure Testing:

Finished filter housings can be pressure-tested according to the applicable product specification and project requirements.

Inspection Documentation:

Inspection records, material certificates, pressure-test records, and product documentation can be supplied when specified in the purchase order.

OEM & Customization

Housing Dimensions: Custom mounting dimensions, port locations, face-to-face dimensions, and installation interfaces can be developed for replacement or system-integration projects.

Filter Element Configuration: Media type, filtration rating, element length, support structure, and sealing configuration can be selected according to the application.

Connection Standards: SAE, BSPP, NPT, metric, and project-specific connection requirements can be accommodated according to the selected housing design.

Material Selection: Carbon steel, stainless steel, aluminum alloy, and other suitable materials can be evaluated according to pressure, fluid, temperature, and environmental conditions.

Monitoring Configuration: Differential pressure indicators, switches, and other monitoring components can be integrated where required.

Documentation: Technical drawings, dimensional drawings, product data sheets, and 3D CAD files can be provided according to project requirements.

FAQ

Q: How should I select the correct industrial filter unit?

A: Selection should start with the required flow rate, operating pressure, fluid type, operating temperature, filtration rating, allowable pressure drop, connection size, and installation position. The filter housing and element should then be selected as a matched configuration.

Q: What filtration rating should I use for a hydraulic system?

A: There is no single filtration rating suitable for every hydraulic system. The required rating depends on the sensitivity of the valves, pumps, actuators, and other components, as well as the system cleanliness target. The equipment manufacturer's filtration requirements should be used together with the required cleanliness level.

Q: Can the filter be used on the suction side of a pump?

A: A suction-line filter requires careful pressure-drop evaluation because excessive restriction can contribute to pump inlet problems. Where suction-side installation is required, the filter should be selected specifically for the available inlet pressure, fluid viscosity, flow rate, and required filtration level.

Q: How do I choose between NBR, FKM, and EPDM seals?

A: Seal selection depends primarily on the working fluid and operating temperature. NBR, FKM, and EPDM have different chemical compatibility ranges, so the seal material should be selected against the actual fluid specification rather than by temperature alone.

Q: When should the filter element be replaced?

A: Element replacement should normally be based on the specified differential pressure limit, maintenance procedure, or contamination condition rather than only on a fixed operating time. A differential pressure indicator or switch can provide a service signal when the element reaches the specified loading level.

Q: What information should I provide when requesting a quotation?

A: For accurate filter selection, provide the required flow rate, operating pressure, fluid type, operating temperature, target filtration rating, connection type and size, installation position, available installation space, and any existing filter model or drawing. For replacement elements, the original element dimensions and part number are also useful.

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