The CT valves are provided with concentric metal rings and selflubricating non-metallic guides made of various kinds of thermoplastic materials such as PTFE, Peek™, Vespel®.

Most suited for dry use, they fit to any kind of gas and conditions, reaching pressures to 560 bar. They are also used in process gas and diaphragm compressors. There is a wide range of available dimensions, from small diameters of 20 mm to large dimensions.