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3-Way Proportional
Pressure Reducing Valve
Spool Type
Pilot Operated
Compact Valve – 60 bar
PDMC10S30P
z Compact design
z Excellent dynamic performance
z Low pressure drop due to CFD optimized ow-path
z Control pressure reduction is possible right down to 0 bar.
z Excellent curve characteristics, also when there is inadequate primary pressure
(the control pressure is 1.3 bar below the primary pressure)
z All exposed surfaces corrosion-proof
z Coil seals protect the solenoid system
z All valve parts made of high-strength steel with hardened and ground components to
ensure minimal wear and extended service life
z Application example: clutch control
z Screen lter protects the pilot from contamination
Primary pressure at port 2: max. 60 bar
Control pressure at port 1: max. 35 bar
Tank pressure at port 3: max. 10 bar dynamic, 30 bar static
(Should be piped separately to tank)
Nominal ow: max. 40 l/min
Pressure ranges: 0 – 25 bar, 0 – 35 bar
Pressure drop: approx. 8 bar at 40 l/min (from 2 → 1, 1 → 3)
Leakage: Energized: < 0.4 l/min
De-energized: < 0.8 l/min
(at 60 bar pump pressure)
Media operating temperature range: min. -30 °C to max. +100 °C
Ambient temperature range: min. -30 °C to max. +80 °C *
(see note on thermal load capacity of the coil)
Fluid: Hydraulic oil to DIN 51524 Part 1 + 2
Viscosity: min. 7.4 mm²/s to max. 2000 mm²/s
Filtration: Class 19/17/14 to ISO 4406
or cleaner
MTTF
d
: 150 years
Installation: No orientation restrictions
Materials: Valve body: free-cutting steel
Piston: hardened and
ground steel
Seals: NBR (standard)
FKM (optional, temperature
range to -20 °C)
Cavity: 10S30 compact
Weight: 0.28 kg
Coil duty rating: 100 % duty rating *
(see note on thermal load capacity of the coil)
Control currents: 0 – 950 mA, 10.5 Ω (24 V)
0 – 2,000 mA, 2.65 Ω (12 V)
Dither frequency: 130 Hz recommended (110 – 200 Hz)
Hysteresis with dither: 2 % of the max. control current
Repeatability: ≤ 1 % of the max. pressure
Reversal error: ≤ 1 % of the max. control current
Response sensitivity: ≤ 1 % of the max. control current
Insulation material class: H to VDE0580, 180 °C
The proportional pressure reducing valve
PDMC10S30P is a pilot-operated, 3-way
spool-type valve. When de-energized, port 1
(consumer) is vented via tank port 3. Pump port
2 provides a constant small ow of pilot oil to
tank port 3. When the inlet pressure and the
volume required uctuates, it provides an almost
constant outlet pressure - in proportion to the
coil. When the control current increases, the
coil solenoid exerts a force via the pilot line on
the control piston and thereby connects pump
port 2 with port 1 (consumer). (This means the
pilot oil is static). When a consumer causes the
pressure to build at port 1, this acts on the con-
trol piston and produces a counter force to the
solenoid force, which in turn moves the control
piston back again. This causes the ow to be
restricted from pump port 2 to port 1 (consum-
er), until the pressure equals the target value.
If, as a result of external factors, the pressure at
port 1 rises above than the preset pressure, the
valve opens from port 1 (consumer) to tank port
3. Pressures at tank port 3 are additive to the
control pressure. The valves have been devel-
oped specically for high dynamic performance
and low pressure drops.
Up to 40 l/min
Up to 60 bar
E .0/12.10
511
Prop. pressure reducing
valve, compact
10S30
P = pilot-operated
01 = standard
03 = strainer at port 2
C = slip-in only
N = NBR (standard)
V = FKM (optional)
25 = 0 to 25 bar
35 = 0 to 35 bar
12 = 12 Volt (2.65 Ω)
24 = 24 Volt (10.5 Ω)
PN = Deutsch connector DT04, 2-pole, axial
PU = AMP Junior Timer, 2-pole, axial
2.65 = 2.65 Ω (12 V)
10.5 = 10.5 Ω (24 V)
PDMC10S30P-01-C-N-25-12PU-5.2 3450702
PDMC10S30P-01-C-N-25-24PU-21.2 3396732
PDMC10S30P-01-C-N-35-12PU-5.2 3450703
PDMC10S30P-01-C-N-35-24PU-21.2 3422416
Other models on request
R10S30-010-01 3426652 Steel G 3/8 60 bar
Measured at
n = 34 mm²/s
T
oil
= 46 °C
*Thermal load capacity of the coil:
100% duty cycle at T
A, max
= 80 °C
Please note: The data is based on the complete valve,
mounted in a line body (block temperature: 105 °C, aluminium
or steel; dimensions 40 x 60 x 56 mm), anged to a base block
(block temperature 105 °C, steel, dimensions 200 x 150 x 100 mm).
The air in the climatic test cabinet is circulated by the cabinet
ventilator.
% of max. control pressure
% of maximum current
10 20 30 40 50 60 70 80 90 100
0.0
25.0
50.0
75.0
100.0
125.0
Control pressure
Flow rate
barPSI
-40 -30 -20 -10 0 10 20 30 40
l/min
0.0
10.0
20.0
30.0
40.0
50.0
0
200
400
600
-10 -8 -6 -4 -2 0 2 4 6 8 10
US gpm
80% max. control current
100% max. control current
50% max. control current
Differential pressure
Flow rate
D
barPSI
-40 -30 -20 -10 0 10 20 30 40
l/min
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0
20
40
60
80
100
120
140
-10 -8 -6 -4 -2 0 2 4 6 8 10
US gpm
Pressure drop 1→3
Pressure drop 2→1
without control current
}
Offset of the pilot
E .0/12.10
512
M5-8.8
Torque
M = 4.5
± 0.2
Nm
68.9 AMP connector
78 Deutsch connector
3-Way
Countersink 179197
Reamer 179199
tting depth
tting depth
tting depth
Justus-von-Liebig-Str.
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 modications.
Millimeter
Subject to technical modications.
Millimeter
Subject to technical modications.
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