Directional poppet valves ATEX WVHX-4B

Operating pressure up to 700 bar
Max. flow rate 12 l/Min
Porting NG 4 according to Bieri standard

Features Advantages
Surface mount body NG4, 700 bar, -20°C 2/2-, 3/2- and 4/2- seat tight way functions with defined pattern
Explosion proof marking of solenoid coil II 2G Ex eb mb IIC T4 Gb
according ATEX and IECEx
Maximum wear resistance and insensitiveness against contamination
Patented, complete pressure compensation, leveraged magnetic force and strong return spring Safe and fast switching at all pressure at all pressure constallations
Ceramic valve balls and high-grade hardend seats out of special steel High corrosion resistance
4x 90° turnable and exchangeable plug-in coil Four positions of solenoid coil, replacement of coils without opening of the pressure tight spaces



Technical Data

Hydraulic fluid Mineral oil according to DIN 51524 with ignition temperatures up to 185 °C (other fluids on request)
Fluid temperature range -20 up to 80 °C (in- and outflow)
Ambient temperature range -20 up to 55 °C (valve banks with min. clearance 14 mm)
-20 up to 65 °C ("stand-alone" valve)
Viscosity range 5 bis 400 mm²/s
Porting NG 4 according to Bieri standard
Max. operating pressure 700 bar
Pressure difference from P to A, B to T must be adhered! (pp ≥ pA (pB) ≥ pT)
Max. flow rate 12 l/min
Filtration (recommendation) According NAS 1638 class 6 resp. ISO/DIN 4406 17/15/12
Duty cycle DC 100%
Solenoid voltage (nominal power) 24 VDC (17W)
Voltage tolerance +/- 10%
Switching time 40 - 120 ms
Degree of protection IP 63 according to EN 60529 / DIN 40050 (solenoid IP 66)
Weight see technical data sheet
Material Corrosion-resistant steel and aluminium
(coil housing: ZnNi - corrosion protection)