Proportional pressure relief valves Type PDV700

Features Advantages
Pilot operated version in ball-seat design with dynamic low friction seals:
  • Leakage optimized in closed position
  • Applicable for a wide range of viscosity
Proportional solenoid with return spring: Linear and low hysteresis



Technical data

Hydraulic fluid mineral oil according to DIN 51524
(other fluids on request)
Fluid temperature range – 20 bis 80 °C
Ambient temperature range – 30 to 50 °C
Viscosity range 5 to 400 mm2/s
Porting NG 6 according to DIN 24340 / Size 03
according to ISO 4401:2005 / CETOP RP 121 H
Nominal pressure rating 400, 550, 700 bar
Max. operating pressure connection P, A, B 700 bar
Max. operating pressure connection T max. 200 bar / recommended
pressure at T < 2 bar / External T-connections
provided for optimum stability and full control range
Max. flow rate 2 l/min direct operated version
25 l/min pilot operated version
Filtration according to NAS 1638, class 6
or ISO/DIN 4406:1999, class 17/15/12
Switch-on time 100%
Hysterese ≤ 5 % with optimal dither signal
Material housing: steel, galvanized/black chromate
solenoid: galvanized