LF(M) High Viscosity Filter Assemblies

Low pressure filter assemblies optimized for high flow hydraulic, high viscosity lube and heavily contaminated fuel applications.

Max Operating Pressure: 150 psi (10 bar)

Available options up to 1000 psi (68.9 bar)

Download the Donaldson Hy-Pro LF(M) High Viscosity Filter Assemblies Brochure


Filtration starts with the filter.

The oversized coreless filter element in every LF delivers lower ISO Codes over a long element lifespan to ensure low disposal impact, simultaneously reducing your environmental footprint and your bottom line. To top it off, select elements come standard with an integral zero-leak bypass so with every filter change you get a new bypass along with peace of mind.

Built for industrial use.

Constructed from heavy duty carbon steel (standard) or the optional 304 or 316 stainless steel, the LF filter housings are designed to excel in even the toughest industrial conditions. Multiround units go even further to provide increased capacity whether you’re operating with incredibly high viscosity oils, extreme flow rates or need extended service intervals.

Media Efficiency 2018-01

Element configuration & media options.

With media options down to β3[C] > 4000, insoluble varnish removal and water absorbing options, you get the perfect element for your application, every time. Element configurations include Hy-Pro HP106 and HP107 coreless style elements with integral, zero-leak bypass valves. For those plants using 8314 style industry standard elements, the HP8314 offers an improved bypass valve design.

Setting the new standard.

Sampling and condition monitoring are no longer optional, they’re a necessity. That’s why every LF comes standard with sample ports and green to red true ∆P gages that indicate exact element condition at all times. With access to accurate system cleanliness conditions, you’ll know exactly how well your filtration is performing.


Minimize the mess.

Top loading filter housings minimize the mess from element services and changes. And with the easy open swing bolt lid design, you’ll be back to filtering your fluids without having to search for all those lost parts.

Seamlessly integrated into your systems.

Multiple connection options and port customization provide the flexibility to integrate LF directly into existing re-circulating or auxiliary side loop and dispensing lines to improve fluid cleanliness and optimize existing assets. Get filtration exactly where you need it without extra expense of installing new plumbing and electrical.