HDU
Clean Oil
All The Time
![HDU Dirty OIl Pour](https://b2574188.smushcdn.com/2574188/wp-content/uploads/2022/09/HDU-Dirty-OIl-Pour.jpg?lossy=1&strip=1&webp=1)
Particles, water, and other impurities in an oil system cause performance problems and increased maintenance costs.
![cropped-Klassen-Icon-Wordpress-Tab-512x512px.png Klassen Icon Logo](https://b2574188.smushcdn.com/2574188/wp-content/uploads/2022/03/cropped-Klassen-Icon-Wordpress-Tab-512x512px.png?lossy=1&strip=1&webp=1)
![HDU Fine Filter copy](https://b2574188.smushcdn.com/2574188/wp-content/uploads/2022/06/HDU-Fine-Filter-copy.png?lossy=1&strip=1&webp=1)
The HDU fine filter is an offline oil filtration unit designed specifically to solve contamination problems in lubrication systems.
![HDU 15_12 Domtar 2020 copy](https://b2574188.smushcdn.com/2574188/wp-content/uploads/2022/06/HDU-15_12-Domtar-2020-copy.png?lossy=1&strip=1&webp=1)
HDU 15/12
HDU 15/12 is a compact offline filter for maintaining oil in small hydraulics, gearbox, lubrication, and diesel fuel applications.
![HDU 15_25 Product copy](https://b2574188.smushcdn.com/2574188/wp-content/uploads/2022/06/HDU-15_25-Product-copy-1.png?lossy=1&strip=1&webp=1)
HDU 15/25
HDU 15/25 is a fine filter for offline oil filtration in small-to-medium hydraulics, gearbox, lubrication, and diesel fuel applications.
![HDU 27 Filter Family copy](https://b2574188.smushcdn.com/2574188/wp-content/uploads/2022/06/HDU-27-Filter-Family-copy.png?lossy=1&strip=1&webp=1)
HDU 27/27 to 108
HDU 27/– series is a fine filter system for offline oil filtration. The modular configuration allows for medium-to-large applications that include hydraulics, gearboxes lubrication, cooling & quenching, and diesel fuel applications.