Spool valve NG4
The proven flange spool valves for the modular valve construction have been extended with an execution for use in very corrosive environments. In the "K8" version, all external metal parts of the valve are completely coated with zinc-nickel, which results in significantly higher corrosion protection (800 h in the salt spray test according to ISO 9227). The valve can switch volumes up to 30 l/min with up to 350 bar and is available as a 2-way or 3-way function. An optional detent function enables valve actuation with a short electrical impulse, which greatly reduces energy consumption. A low-leakage version is available for applications where the lowest possible leakage is required. An "Economy" version in a greatly reduced size was also created, which can be used in tight installation spaces. The direct operated valve of nominal size NG4 is available as a 4/2-way and 4/3-way function with the designation WDxFA04_K8. It controls the direction of flow and thus in most cases the direction of movement or rotation of hydraulic actuators. Due to the high corrosion protection it is suitable for use in harsh weather conditions.
Further details can be found in data sheet 1.2-33.