Continuous Operation with Eaton HYD DU 251-401 Duplex Filters
In the world of industrial filtration, downtime is the enemy of productivity. The Eaton HYD DU 251-401 series stands out as a robust solution designed to keep hydraulic and lubrication systems running smoothly without interruption. As a trusted distributor for major filtration brands, Purecowater provides in-depth access to Eaton’s engineered solutions, including this high-performance duplex pressure filter.
Quick Product Overview
The Eaton DU 251-401 is a low-to-medium pressure duplex filter capable of handling operating pressures up to 464 PSI (32 bar). Its defining feature is the integrated change-over valve, allowing operators to switch filtration from a dirty element to a clean one without shutting down the system.
Why Choose the Eaton DU 251-401?
The DU 251 and DU 401 models are engineered for applications where system availability is critical. Unlike simplex filters that require a complete system halt to change a clogged element, the widespread adoption of the DU series is due to its seamless maintenance capabilities.
Key Features & Benefits
- Uninterrupted Flow: The integrated rotary slide or three-way change-over valve ensures that fluid flow continues to the clean filter side during maintenance.
- High Pressure Stability: Rated for working pressures up to 464 PSI, these filters can absorb pressure peaks with a sufficient safety margin, protecting sensitive downstream components.
- Versatile Fluid Compatibility: Suitable for petroleum-based fluids, HW emulsions, water glycols, and most synthetic lubrication fluids.
- Flexible Installation: Can be utilized effectively as a suction filter or pressure filter in vertical installations.
Technical Specifications
Understanding the technical capabilities of the DU 251-401 series is essential for proper system integration. Below is a breakdown of the standard specifications for these units.
| Specification | Data |
|---|---|
| Series | DU 251 / DU 401 |
| Max. Operating Pressure | 464 PSI (32 bar) |
| Test Pressure | Approx. 900 PSI (depending on model variant) |
| Operating Temperature | -14°F to +212°F (-10°C to +100°C) |
| Mounting Position | Vertical |
| Connection Type | SAE-flange connection 3000 PSI (Standard) |
| Seal Material Options | Nitrile (NBR) or Viton (FPM) |
Filter Element Options
The efficiency of the Eaton DU 251-401 relies heavily on the choice of filter element. Eaton offers high intrinsic stability elements that provide excellent dirt-retaining capacity and long service life. The flow direction for these elements is typically from outside to inside.
- Wire Mesh (G): Cleanable surface filter elements made of stainless steel mesh. Ideal for specific filtration ratings where element reuse is required.
- Microglass (VG): Disposable depth filter elements made of glass fiber fleece. These are recommended for finer filtration (finer than 40 µm) and offer superior retention rates (down to 4 µm(c) or finer upon request).
Typical Industrial Applications
The DU 251-401 series is versatile and found across various heavy industries. Common applications include:
- Hydraulic Systems: Protecting pumps, valves, and actuators from particulate contamination.
- Lubrication Systems: Ensuring clean oil flow to bearings and gears in power generation and manufacturing machinery.
- Machine Tools: Filtering coolants and cutting fluids to maintain precision.
- Marine & Offshore: Reliable operation in harsh environments (with appropriate housing coatings or stainless steel variants like the EDU series).
Contact Purecowater for Filtration Solutions
Whether you require a replacement unit, spare filter elements, or a completely new filtration skid, Purecowater is your partner for Eaton products. We help you navigate specific fluid requirements, sizing, and material gradients to ensure your process remains efficient.
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