Proportional pressure relief valves PDB-6I

Operating pressure up to 700 bar
Max. flow rate 25 l/Min
Porting NG 6 ISO

Features Advantages
Direct operated with wide useful range High degree of pressure stability
Linear pressure-current characteristic The orifices of the main stage are easily exchangeable

Applications

Design


Technical data

Hydraulic fluid mineral oil according to DIN 51524
(other fluids on request)
Fluid temperature range – 20 to 80 °C
Ambient temperature range – 30 to 50 °C
Viscosity range 5 to 400 mm²/s
Porting NG 6 according to DIN 24340 / ISO 4401 / CETOP RP 121 H
Nominal pressure stages 315 bar, 400 bar, 550 bar, 700 bar
Max. operating pressure connection P, A, B 700 bar
Max. operating pressure connection T 70 bar
Max. flow rate direct operated: 8 l/min
  pilot operated: 25 l/min
Filtration (recommendation) according to NAS 1638 class 6 or ISO/DIN 4406 17/15/12
Duty cycle DC 100%
Solenoid voltage (nominal resistance) 24 VDC (5 Ohm)
Degree of protection IP 65 according to EN 60529 / DIN 40050
Weight direct operated: 2.0 kg
  pilot operated: 3.0 kg
Dither frequency (recommendation) 60 - 400 Hz
Hysterese ≤ 5 % with optimal dither signal
Material Valve body: stainless steel
  Solenoid coil: ZnNi-plated (1000 h salt spray test)