Threaded valve e.g. for use as check valve, path valve or overload valve has sleeve mounted so that it cannot be axially displaced but can be offset and/or turned

摘要

The threaded valve has an externally threaded part (30) and a sleeve (13) with connection apertures (16, 17) and containing a piston (20) to open and close the apertures. The sleeve is mounted so that it cannot be axially displaced with respect to the threaded part, but can be offset and/or turned perpendicular to the direction of the thread.