Fuel pre-filters

The main design of the WAVELOCK system is largely comparable to the conventional spin‑on filter. The fluid to be filtered flows through the filter head axially into the filter and flows through the filter element from the outside to the inside. The cleaned fluid flows out of the filter through its center. The sealing to the environment and between the dirty and clean side of the filter element is respectively made with a radial O-ring. Depending on the respective requirements, the modular design can be used to integrate additional functions such as a filter bypass valve or an anti-drain membrane. The WAVELOCK spin-on filter does not require additional space for fitting or removal.

The key innovation of the WAVELOCK spin-on filter is the design of the connection to the flange on the filter head. A bayonet concept with three bayonet wings was designed to enable a quick and easy service with fitting or removal carried out simply by a 90° rotation. Filter service takes place without the use of special tools, making maintenance and assembly particularly simple and safe. Clearly defined loosening and tightening torques reduce assembly errors.

The sealing between the filter head and the WAVELOCK spin-on filter is made with two radial O-rings. This robust design with pressurized sealing also seals reliably at high pressures and can compensate relative movements in the application. As there is no thread present in the flow area of the fluid, the component cleanliness is considerably increased. Shavings or wear particles from the thread manufacture or fitting process cannot enter the fluid.

In order to cover a wide range of applications in fuel, oil and hydraulic oil filtration, the integration of the WAVELOCK design into a modular system is currently being implemented. This enables different sizes, diverse filtration requirements and additional functions to be combined in a modular system. The first product family in which the WAVELOCK concept is being implemented is the modular fuel pre-filter portfolio. There are three different filter heads for the complete product range in this size, the standard version, a version with a hand-operated pump and another with an electric fuel pump. The WAVELOCK spin-on filter is available in two lengths. The WAVELOCK spin-on filters are also available with water separation and will be equipped with a variety of filter media. Finally, with the addition of components such as an electric heater or water sensor, the WAVELOCK fuel pre‑filter system is suitable for universal use.