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Home / Products / Air Filters / PAF Series Pressurized Air Filter
PAF Series Pressurized Air Filter

PAF Series Pressurized Air Filter

PAF Series Pressurized Air Filter is a hydraulic reservoir air control component developed for systems that require controlled tank pressure and clean air exchange. It integrates air filtration, pressure regulation, and oil mist protection functions to help maintain stable hydraulic system operation.
Unlike common ventilation filters, this equipment controls air entering and leaving the tank through check valve structures. As a Pressurized Tank Air Filter, it helps maintain internal reservoir pressure and reduce problems caused by unstable oil conditions.
The Hydraulic Air Filtration Device design combines filtration and pressure balance functions, making it suitable for engineering machinery, vehicles, and mobile hydraulic equipment.



Customised Services

Pressurized Air Filter supports customized solutions based on hydraulic tank design, working environment, and equipment requirements.
Pressure Setting Customization: Provide different pressure control options including 0.02MPa, 0.035MPa, and 0.07MPa according to system needs.
Air Flow Configuration: Support airflow selection from 0.45-0.75m³/min based on reservoir ventilation requirements.
Filtration Structure Adjustment: Provide air filtration options of 10μm, 20μm, and 40μm with different oil mesh configurations.
Connection Design Customization: Support threaded G3/4 and flange installation solutions according to equipment structure.
Application Adaptation: Provide solutions for engineering machinery, mobile equipment, and industrial hydraulic systems using a Hydraulic Air Filtration Device.
Order Support: Minimum order quantity starts from 10 units, with a production lead time of 5-7 days to support efficient project delivery.

  • Specifications

  • Areas of Application

  • Product Benefits

  • FAQ

  • Inquiry

  • Model PAF₁-*-*-*L PAF₂-*-*-*F
    Check valve setting (MPa) (Pre-set pressure in oil tank) 0.02, 0.035, 0.07 0.02, 0.035, 0.07
    Air flow rate (m³/min) 0.45, 0.55, 0.75 0.45, 0.55, 0.75
    Air filtration (μm) 10, 20, 40 10, 20, 40
    Oil filter mesh (mm) None (No oil filler strainer) 0.5 (As per customer requirement)
    Temp. range (℃) -20 ~ +100 -20 ~ +100
    Connect type Thread (G3/4") Flange (6 pcs M4×16)
    Weight (Kg) 0.2 0.28
  • Areas of Application

    Pressurized Air Filter is commonly used in hydraulic systems where tank pressure control and air cleanliness are important.
    Engineering Machinery: Installed on hydraulic tanks of construction equipment to help maintain stable internal pressure and reduce contamination risks.
    Mobile Equipment: Suitable for vehicles and mobile machines requiring reliable air filtration during frequent movement and working condition changes.
    Hydraulic System Manufacturing: Provides Pressurized Tank Air Filter solutions for equipment manufacturers and system integrators developing hydraulic oil tanks.
    Industrial Hydraulic Applications: Used in systems requiring controlled air exchange, where the Hydraulic Air Filtration Device helps support cleaner oil environments.
    Special Hydraulic Equipment: Applied in equipment requiring improved pump self-priming performance and stable reservoir operation.

  • Product Benefits

    Pressure Control Capability: Supports check valve opening pressure options of 0.02MPa, 0.035MPa, and 0.07MPa to maintain suitable tank pressure conditions.
    Adjustable Air Flow Performance: Provides air flow options of 0.45m³/min, 0.55m³/min, and 0.75m³/min for different hydraulic reservoir requirements.
    Multiple Filtration Precision Options: Supports air filtration accuracy of 10μm, 20μm, and 40μm to reduce external particle contamination.
    Oil Mist Protection: Provides oil filter mesh options of none or 0.5mm according to different oil mist filtration requirements.
    Wide Temperature Adaptability: Operates within a temperature range of -20℃ to +100℃, suitable for various industrial environments.
    Flexible Installation Methods: Supports threaded connection G3/4 and flange connection with 6-M4×16 bolts for different equipment structures.

  • FAQ

    1. What is the purpose of a Pressurized Tank Air Filter?
    A Pressurized Tank Air Filter helps control air exchange and maintain suitable pressure conditions inside hydraulic reservoirs.

    2. How does this hydraulic air filtration device work?
    The device uses air filtration and check valve structures to control air intake and exhaust according to tank pressure changes.

    3. What filtration accuracy options are available for this air filter?
    The filter supports air filtration accuracy options of 10μm, 20μm, and 40μm for different contamination control requirements.

    4. What should be considered when selecting a hydraulic tank air filter?
    Important factors include pressure setting, airflow requirement, filtration accuracy, connection method, and operating temperature.

    5. Can PAF air filters be customized for different hydraulic systems?
    Yes. Custom solutions can be provided according to tank design, installation requirements, and application conditions.

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About Us
Wenzhou Jingtong Hydraumatic Co.,Ltd

Wenzhou Jingtong Hydraulic Co., Ltd. of China (Formerly Wenzhou Jingtong Hydraulic Parts Factory) was founded in 2006. It is situated at Li'ao Industrial Zone, Qiaoxia, Yongjia, Wenzhou, Zhejiang, China, beside the Oubei Expressway Exit at the intersection of Yongtaiwen and Jinliwen Expressways. The company owns more than 6,000 square meters of standard factory buildings and ranks among China’s major large-scale manufacturers focusing on hydraulic filters. Our brand has earned a solid reputation at home and abroad, supported by over 20 sales outlets nationwide. Our product portfolio covers a full range of hydraulic filters, hydraulic air breathers, oil coolers, accumulators, liquid level controllers, liquid level & temperature gauges, miniature pressure test hose assemblies, filtration units and other hydraulic accessories.

Endowed with strong technical strength, advanced production technologies and strict inspection procedures, we maintain consistent product quality and have passed ISO9001:2008 Quality Management System Certification. We have been awarded a series of honors including AAA Grade Contract-abiding & Trustworthy Enterprise, AAA Grade Integrity Operation Demonstration Unit, AAA Grade Credit Enterprise, China Famous Brand. Our products cater to a wide spectrum of sectors covering construction and engineering machinery, mining and metallurgical equipment, hydraulic engineering systems, machine tools, agricultural machinery, plastic machinery, petrochemical industry as well as marine and offshore engineering equipment.

Upholding the tenet of “Integrity First” and the guideline of “Quality Priority”, we sincerely welcome valuable suggestions and feedback from customers worldwide to help us keep optimizing our products.

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