Often, cylinders need both a check valve and a flow regulator, in order to control the cylinder movement and speed. These functions are integrated as part of the cylinder bottom. The new cartridge is screwed directly into the cylinder bottom, carrying out both the check and flow control functions at the same time. This solution is suitable for the third point cylinders but can also be used for all applications requiring a check valve (single or double acting), with flow regulation. Can be assembled either in rod or bottom side, depending on application requirements.