Spool valve Ex-protection
Wandfluh has extended the proven spool valves for the modular valve construction with a version for use in highly corrosive environments. The valve can control volume flows up to 50 l/min with up to 350 bar and is available as a 2-way or 3-way function. All external parts such as valve body, cover, solenoid coil etc. are made of stainless and acid-resistant steel (AISI 316L). The armature tube with its zinc-nickel coating is already very well protected against corrosion (1000h in the salt spray test) and is additionally closed from the outside with a stainless cover. The valve of nominal size NG6 is controlled by a solenoid certified for use in explosion-hazard areas. Therefore, the valve with the designation WDYFA06_K10 can be used in danger zones 1 + 2. The valve controls the flow direction and thus the direction of movement or rotation of hydraulic actuators. It is mainly used in harsh weather conditions or near the sea.
Further details can be found in data sheet 1.3-34S.