Filtervorrichtung mit Bypaßventil

摘要

The invention concerns a filter device with a bypass valve (20) which, releases a fluid-conveying path to an outlet when a filter element (14) becomes clogged and comprises a closure part (22) on which at least one closure spring (24) acts. According to the invention, in order to adjust the spring pretension and hence the opening force for the closure part (22), an adjusting device (28) is provided for adjusting the opening force of the respective closure spring (24). As a result, a filter device is provided which can be economically adapted without any structural modifications to very different applications in a predetermiend pressure range.