E 5.991.7.0/12.10
536
Proportional Pressure Relief
Valve – 365 bar
PDB16PZ-08/-09
SPOOL Type – Pilot Operated – Inverse
Cartridge Valve
300 l/min
365 bar
The PDB16PZ is a two stage spool type
proportional pressure relief valve. If the
pressure at port 1 rises above the setting
dened by the electrical control signal,
the pilot stage opens and allows ow
from the back of the main piston to port 2.
The resulting pressure imbalance
causes the main piston to open against
the return spring and allows ow from
port 1 to 2.
As a function of the electrical signal, the
relief pressure at port 1 can be changed
steplessly.
The valve is inversely controlled: the
lowest pressure is created at the highest
current. With decreasing control current
the pilot-stage closes, the main stage
follows the pilot-stage and at port 1
a counter pressure is created, e.g. to
accelerate a motor of a fan.
The maximum pressure can be pre-set
mechanically.
Features
Patented design to prevent erosion at cavitation
All surfaces zinc-plated and corrosion-proof
Small hysteresis and good stability across the whole pressure and ow range
Excellent dynamic performance
All valve parts made of high-strength steel with hardened and ground
components to ensure minimal wear and extended service life
Coil seals protect the solenoid system
Rigid design using one-piece body minimizes the effect of eccentricities in cavity
and maximizes reliability
Low pressure drop by CFD optimized ow-path
Adjustable over the entire pressure range
FuNctION
specIFIcatIONs
Operating pressure: max. 365 bar port 1 / 50 bar port 2
Nominal ow: 300 l/min
Internal leakage: less than 0.5 l/min at 80% of
nominal pressure
Media operating temp. range: min. -20 °C to max. +100 °C
Ambient temp. range: min. -20 °C to max. +60 °C
Operating uid: hydraulic oil according to DIN 51524 part 1 and 2
Viscosity: min. 7.4 mm²/s to max. 420 mm²/s
Filtration: Class 18/16/13 up to 19/17/14 according to
ISO 4406 or cleaner
Installation: optional
Material: valve body: carbon steel
piston: hardened and ground
steel
seals: NBR (Standard)
FKM (Optional)
back-up rings: PTFE
Cavity: UNF FC16-2
Weight: complete valve: 0.82 kg
only coil: 0.22 kg
Control current range: 1050 mA, 8.8 Ohm (24 Volt)
2100 mA, 2.2 Ohm (12 Volt)
PWM frequency: 200 Hz
Hysteresis with dither: 2-4% of max. control current
Repeatability: ≤ 2% of max. pressure range
Reversal error: ≤ 2% of max. control current
Response sensitivity: ≤ 1% of max. control current
NOTE
In order to achieve optimum function, any trapped air should be vented using the bleed
screw on the face of the tube.
E 5.991.7.0/12.10
537
perFOrmaNce
mOdel cOde
PDB16PZ-08-C-N-330-V-330-24PG-8.8
Basicmodel
Proportional pressure relief inverse
Type
08 = Standard
09 = low pressure drop
(version 87 and 330 only)
BodyandPorts
C = Cartridge only
Seals
N = NBR (Standard)
V = FKM (Viton)
Pressurerange
087 = 4 - 60 bar (870 PSI)
140 = 4 - 96 bar (1400 PSI)
330 = 4 - 228 bar (3300 PSI)
530 = 4 - 345 bar (5300 PSI)
Adjustmentoption
V = adjustable by tool
Pressuresetting
value = factory preset relief pressure (value PSI/10)
Coilvoltage
12 = 12 V (2.2 Ω)
24 = 24 V (8.8 Ω)
Coilconnector
PG = DIN Connector to EN175301-803
PL = 2 ying leads 0.75mm²
PN = Deutsch Connector, 2 pole
PU = AMP Junior Timer, 2 pole, axial
Coilresistance
2.2 = 2.2 Ω (12 V)
8.8 = 8.8 Ω (24 V)
dImeNsIONs
caVItY
FC16-2
% of Maximum
Relieving Pressure
measured at ν = 34 mm
2
/s, T
oil
= 46 °C
After loosening knurled nut,
coil can be rotated through
360 ° and removed.
% of Maximum Control Current
1 1/2'' Hex
Torque 130 +50
Nm
HYDACFluidtechnikGmbH
Justus-von-Liebig-Str.
D-66280Sulzbach/Saar
Tel: 0 68 97 /509-01
Fax: 0 68 97 /509-598
E-Mail: utec@hydac.com
The information in this brochure
relates to the operating conditions
and applications described. For
applications or operating conditions
not described, please contact the
relevant technical department.
Subject to technical modications.
NOTE
millimeter (inch)
subject to technical modications
Formtools
Tool PartNo.
Rougher FC16-2 176218
Finisher FC16-2 176219
millimeter (inch)
subject to technical modications
Inlineconnectionhousings
Code PartNo. Material Ports Pressure
FH162-SB8 3032496 Steel, zinc plated 1 BSP 420 bar
FH162-AB8 3037193 Alu, clear anodized 1 BSP 245 bar
Standardmodels
Modelcode PartNo.
PDB16PZ-08-C-N-530V530-12PG-2.2 3370906
PDB16PZ-08-C-N-530V530-24PG-8.8 3370945
PDB16PZ-09-C-N-330V330-12PG-2.2 3370947
PDB16PZ-09-C-N-330V330-24PG-8.8 3370948
PDB16PZ-09-C-N-087V087-12PG-2.2 3370950
PDB16PZ-09-C-N-087V087-24PG-8.8 3370951
Venting Screw
Torque 2.5
+0.5
Nm
''
Torque 4
+2
Nm
1/2" HEX
Torque 8
+2
Nm
other models on request
70 % Max. control current
50 % Max. control current
No control current
100 % Max. control current
measured at ν = 34 mm
2
/s, T
oil
= 46 °C
Relieving Pressure
Flow rate
thick
%