With the new spool valve, directional functions in the nominal size of 4 can now be realised for zone 0. The valve is available as 4/3 and 4/2-way function and as a detented version. With a leakage of less than 20 ml/min at 120 bar, the valve is ideally suited for applications where small leakages play an important role. The valve with the designation WDZFA04 is also ideally suited for pilot…