The ZNGL02011801 Hydraulic Oil Filter Element is a return-line filtration component widely utilized in hydraulic and lubrication systems. Its primary function is to filter out solid particles and colloidal contaminants from the fluid, thereby ensuring the proper operation of the equipment. The following is a summary of the basic information for this filter element:

 Product Model  ZNGL02011801

 Application  Used in hydraulic system return lines or lubrication stations to filter out contaminants such as metal particles and rubber impurities from seals within the fluid.

 Applicable Media  Hydraulic oil, lubricating oil, turbine oil, and other mineral oils, as well as emulsions.

 Filtration Precision  1–80 μm (optional); common precision ratings include 3 μm, 5 μm, 10 μm, 20 μm, 25 μm, etc.

 Filter Media Type  Glass fiber (recommended), stainless steel wire mesh, stainless steel sintered felt, filter paper, etc.

 Operating Pressure  1.0 MPa – 21.0 MPa (varies significantly depending on specific specifications).

 Operating Temperature  -25°C to 120°C

 Bypass Valve Opening Pressure  0.35 MPa (some models feature a built-in bypass valve to prevent system flow interruption in the event of filter element clogging).

 Structure  Pleated filter element; the pleated structure increases the effective filtration surface area.

 Testing Standards  International standards including ISO 2941, 2942, 2943, 3968, 4572, etc.

Main Application Fields

The ZNGL02011801 filter element is widely used in the hydraulic systems and lubrication equipment of the following industries:

- Electric Power Industry: Fluid filtration for steam turbines, boiler lubrication systems, feedwater pumps, fans, etc.

- Iron & Steel Metallurgy: Hydraulic systems for rolling mills and continuous casting machines, as well as various lubrication devices.

- Construction Machinery: Hydraulic systems for tunnel boring machines, excavators, injection molding machines, and heavy-duty machinery.

- Mining Machinery: Hydraulic and lubrication systems for various types of mining equipment.

- Shipbuilding: Hydraulic systems for marine cranes and similar onboard equipment.

�� Product Features

1. 1. High Filtration Precision: Utilizes high-quality glass fiber filter media with a filtration ratio of βx ≥ 100, effectively controlling fluid contamination levels.

2. High Dirt-Holding Capacity: Features a pleated structure that increases the filtration surface area, enabling deep dirt retention and ensuring a long service life.

3. Excellent Structural Integrity: Constructed with a metal pleated frame and bonded with epoxy resin adhesive, ensuring structural stability and high pressure resistance.

4. Bypass Valve Design (Select Models): When the pressure differential across the filter element reaches 0.35 MPa due to clogging, the bypass valve automatically opens to prevent system flow interruption and potential equipment damage.

5. Corrosion and High-Temperature Resistance: The glass fiber filter media exhibits excellent resistance to acids, alkalis, and high temperatures.

Leah     Sales Manager

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