PRESSURE REDUCING VALVE DDRRZ-7110-4-2

Design direct acting, electrically operated
Mounting method push-in cartridge, 4 mounting bolts M4x50
Tightening torque 2.6 Nm ± 10%
Size nominal size 4, cavity type AGS
Weight 0.55 kg
Mounting attitude unrestricted (preferably vertical, coil down)
Ambient temperature range -25°C … +50°C
MTTFD values 150 years, see data sheet 400-P-010101-en
Hydraulic characteristics Description, value, unit
Maximum operating pressure pmax – standard model (Inlet pressure)
– model “H”
160bar, pressure range “110” 120bar, pressure range “080”
210 bar, both pressure ranges
Flow range – model “110”
– model “080”
… 8l/min …10l/min
Nominal pressure ranges pN – model “110”
– model “080”
…110bar …80bar
Back pressure in T – static, not controlling
– while controlling
pmax 50bar < 2 % pN
Flow direction see symbols
Hydraulic fluid HL and HLP mineral oil to DIN 51 524; for other fluids, please contact BUCHER
Hydraulic fluid temperature range -25°C … +70°C
Viscosity range 15…380mm2/s (cSt), recommended 20…130mm2/s (cSt)
Minimum fluid cleanliness Cleanliness class to ISO 4406:1999
class 18/16/13
Electrical characteristics Description, value, unit
Supply voltage 12V DC, 24V DC
Control current 12 V = 0…1400 mA, 24 V = 0…800 mA
Coil resistance R – cold value at 20°C
– cold value at -25°C
– max. warm value
12 V = 6.4Ω /24V = 17.2Ω
12 V = 5.2Ω /24V = 14.1Ω
12 V = 10.0Ω /24V = 27.0Ω
Inductance
Measured non-operated, at 0.1 mA (rms) / 1 kHz
12 V = 13 mH 24V = 38 mH
Recommended PWM frequency (dither) 160 Hz
Hysteresis with PWM 2…4 % IN
Reversal error with PWM 2…4 % IN
Sensitivity with PWM < 1 % IN
Reproducibility with PWM < 2 % pN
Relative duty cycle 100%
Nominal power consumption max. 19W
Insulation class to VDE 0580 H (180 °C)
Protection class to ISO20653 / EN60529 IP 65 / IP 67, see “Ordering code” (with appropriate mating connector and proper fitting and sealing)
Electrical connection DIN EN 175301-803, 3-pin 2 P+E (standard) for other connectors, see “Ordering code”