Low pressure Duplex Filter

FilSon Low Pressure Duplex Filters (LPDF) provide a simple and cost effective way to separate particle impurities from hydraulic & lube oil systems.

They are ideal for applications where continuous flow must be maintained, with no flow interruption for strainer basket cleaning. The surface of the duplex basket filters are treated with phosphorus and painted using polyurethane top coating. Transfer valve and convenient bleed valve provides smooth changeover.

  • Maximum flow rate of 2500 l/min
  • Numerous connection variants
  • Bypass-valve, clogging indicators
  • High capacity with low-pressure drops
  • Carbon steel or stainless steel strainer optional
  • Ball valve, poppet and cam-operated valve are available

All FilSon duplex filters and duplex basket strainers are subjected to strict air-tight and leak testing.

We use high-quality hydraulic fittings and duplex filter housing that allow for quick set up and minimal oil spills.

There is a ball valve changeover and a contamination indicator for protecting the hydraulic system safety and reliable seals. Its flow rate is 2500 l/min and a maximum pressure up to 1.6 Mpa.

Low pressure Duplex Filter drawing Low pressure Duplex Filter drawing

ModelFlow Rate
By-pass setting
Pressure loss
Element Number
LPDF-2525DN 203,5,10,20,25,40,50,1001.60.4≤0.351*2
LPDF-4040DN 20
LPDF-6060DN 25
LPDF-110110DN 25
LPDF-160160DN 40
LPDF-240240DN 40
LPDF-330330DN 50
LPDF-500500DN 50
LPDF-660660DN 65,80
LPDF-850850DN 65,80
LPDF-950950DN 65,80,100
LPDF-13001300DN 65,80,100

Why Filson Low Pressure Duplex Filter

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    Easy-to-operate lever handle

    Flexible, lightweight and quiet operation

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    Duplex Filter Housing

    Industrial quality, ensure continuous operation even during element is changed. Stainless steel models are also available

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    Three-way Ball Valve

    Longer service life, well sealing without oil leakage. Permit by-passing the filter during elements changes without costly system shutdown

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    High-strength Bolt Connection

    Good firmness, not easy to deformation. Cannot get up the nail.

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    Clogging Indicator

    Indicating when to change filter elements

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    Vent plug

    Efficient air purging to ensure pressure equilibration

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    Inlet (above) Outlet (below)

    Inlet and outlet connections are located on the same or opposite side

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    Balance Valve

    Used for pressure relief, providing smooth changeover when changing elements.

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    Variety customizable colors, Industrial powder-coated paint

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