Eaton LF Series Low Pressure Hydraulic Filters

Eaton LF Series: Low Pressure In-Line Hydraulic Filters

The Eaton LF Series represents a robust solution for low-pressure filtration in hydraulic and lubrication systems. Designed to operate as suction filters, pressure filters, or return-line filters, these units provide critical protection for downstream components by maintaining fluid cleanliness levels essential for operational efficiency.

Purecowater supplies the Eaton LF Series to industries requiring high intrinsic stability and extended service life. Whether for mobile hydraulics or stationary industrial machinery, the LF series offers versatile mounting and element options to suit a wide range of fluid conditions.

Product Overview and Functionality

The LF Series consists of in-line mounted filters suitable for working pressures up to 464 psi (32 bar). They are engineered to absorb pressure peaks with a significant safety margin, ensuring system integrity during cold starts or flow surges.

The housing design facilitates flow from the outside to the inside of the filter element, optimizing dirt retention. Smaller models typically feature aluminum-cast housings, while larger units utilize steel construction for enhanced durability. The internal valve system often includes an integrated bypass valve (optional) in the filter cover to prevent starvation during cold starts or clogged conditions.

Key Features

• Versatile Application: Can be installed as suction, pressure, or return-line filters.
• High Pressure Capability: Rated up to 464 psi (32 bar), accommodating a wide range of low-pressure circuits.
• Flow Direction: Optimized outside-to-inside flow allows for high dirt-holding capacity.
• Maintenance Friendly: Elements are easily accessible by removing the top cover, minimizing downtime during change-outs.
• Element Variety: Compatible with both disposable Glass Fiber Fleece (Microglass) for fine depth filtration and cleanable Stainless Steel Wire Mesh for surface filtration.

Technical Specifications

The following table outlines the general operating parameters for the Eaton LF Series. Specific values may vary by model size (e.g., LF 63 vs. LF 4005).

Filter Element Technology

The performance of the LF Series relies on Eaton’s high-quality filter elements. Choosing the right element material helps balance filtration efficiency with pressure drop.

• Glass Fiber Fleece (VG): A depth filtration media reinforced with epoxy resin. It offers high dirt-holding capacity and is available in absolute ratings (4, 5, 6, 10, 20 µm). Ideal for protecting sensitive hydraulic components.
• Stainless Steel Wire Mesh (G): A surface filtration media that is cleanable. It provides low pressure drop and high mechanical strength. Available in ratings like 25, 40, and 80 µm.
• Paper (P): Resin-reinforced cellulose fiber for nominal filtration (typically 10 µm).

Common Applications

Due to their flexible design and pressure ratings, Eaton LF filters are deployed across various demanding industries:

• Industrial Manufacturing: Injection molding machines and automated presses.
• Power Generation: Turbine control systems and lubrication skids.
• Pulp & Paper: Hydraulic units in paper mills and sawmill equipment.
• Metal Processing: Steel mills and foundry machinery.
• Simulation & Testing: Flight simulators and component test benches.

Available Models and Sizes

The LF Series spans a wide range of nominal sizes to match specific flow requirements. Below are common frame sizes referenced in technical documentation:

For detailed sizing, pressure drop calculations, or to determine the correct filter element for your fluid viscosity, please reach out to our engineering team.