1
EN 5.126.3/10.19
Proportional
Flow Controller
Poppet type, pilot-operated,
Normally closed
UNF Cartridge – 350 bar
PWS10Z-11
up to 100 l/min
up to 350 bar
The proportional valve is a pilot-
operated, normally closed, spring-loaded
poppet-type ow control valve.
It is non-compensated and its function is
to smoothly control the ow from port 2
to port 1.
The energization of the coil opens the
pilot stage and oil ows across an orice
to the back of the main piston. The
resulting pressure dierential causes the
main piston to follow the pilot stage and
allows a nominal ow. If de-energized,
there is free ow from port 1 to port 2
(see dp/-performance). If energized, ow
from port 1 to port 2 is not possible.
FEATURES
z When combined with a pressure compensator the proportional ow controller can
be used as a 2-way ow regulator – for example when required to lift/lower variable
loads at the same velocity.
z Stepless adjustment of the ow, depending on the coil current.
z Excellent stability throughout the entire ow range
z Excellent dynamic performance
z Coil seals protect the solenoid system
z Optional: Soft shift function with extended switching times possible
z On request: mechanical adjustment of one point of the curve (Version 11, not in
combination with option M)
z Exposed surfaces Zinc-Nickel plated for inreased corrosion protection
(1.000h Salt spray test)
FUNCTION
SPECIFICATIONS*
Operating pressure: max. 350 bar
Nominal ow: max. 100 l/min
Internal leakage: leakage-free
max. 5 drops/min (0.25 cm³/min) at 350 bar
Media operating temperature range: min. -20 °C to max. +100 °C
Ambient temperature range: min. -20 °C to max. + 60 °C
Operating uid: Hydraulic oil to DIN 51524 Part 1, 2 and 3
Viscosity range: min. 10 mm²/s to max. 420 mm²/s
Filtration: Class 19/17/14 to ISO 4406 or cleaner
MTTF
d
: 150 - 1200 years,
according to DIN EN ISO 13849-1
Installation: No orientation restrictions
Material: Valve body: steel
Piston: hardened and
ground steel
Seals: NBR (standard)
FKM (optional, media
temperature range
-20 °C to +100 °C)
Back-up rings: PTFE
Coil: steel / polyamide
Cavity: FC10-2
Weight: 0.5 kg
Electrical data
Control current: 850 mA, 18.0 Ohm (24 Volt)
1750 mA, 4.1 Ohm (12 Volt)
Dither frequency: 120 – 250 Hz (120 Hz recommended)
Hysteresis with dither: 4 - 6 % of Q
max
(für I < 70 % of I
nom
)
Repeatability: ≤ 1.5 % of Q
max
Reversal error: ≤ 2 % of I
nom
Response sensitivity: ≤ 1 % of I
nom
Type of coil: Coil (12 or 24) P ...50-1836
Note
In order to achieve optimal function, any trapped air should be vented using the
bleed screw on the face of the pole tube.
* see "Conditions and instructions for valves" in brochure 53.000
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EN 5.126.3/10.19
MODEL CODE
PWS10Z - 11 M - C - N - P40 - 24 PG - 18.0
Basic model
Proportional
ow control valve
Type
11 = standard
Manual override
No details = without manual override
M = manual override
Body and ports
C = cartridge only
Seals
N = NBR (standard)
V = FKM
Flow rate
P40 = 40 l/min (progressive performance)
at Δp = 5 bar
H40 = 40 l/min (hyper-progressive performance)
other ow rates on request
Coil voltage
DC: 12 = 12 Volt DC
24 = 24 Volt DC
Other voltages on request
Coil connectors (type 50-1836)
DC: PG = DIN connector Type A to EN175301-803
PT = AMP Junior Timer, 2-pole, radial
PL = 2 ying leads, 457 mm long; 0.75 mm²
PN = Deutsch connector DT04-2P, 2-pole, axial
Other connectors on request
Coil resistance
4.1 = 4.1 Ω (12 V)
18.0 = 18.0 Ω (24 V)
Standard models
Model code Part No.
PWS10Z-11-C-N-40-12PG-4.1 3525207
PWS10Z-11-C-N-40-24PG-18.0 3525205
Other models on request
Standard in-line bodies
Code Part No. Material Ports Pressure
FH102-SB4 3037594 Steel, zinc-plated G1/2" 350 bar
FH102-AB4 3037777 Aluminium, anodized G1/2" 210 bar
Other line bodies on request
Seal kits
Code Material Part No.
FS UNF 10/N NBR 3651557
FS UNF 10/V FKM 3651559
I [%]
Q [l/min]
Q [l/min]
TYPICAL PERFORMANCE
measured at ν = 34 mm²/s, T
oil
= 46 °C
Version P
Version H
I [%]
Δp [bar]Q [l/min]Δp [bar]Q [l/min]
0
5
10
15
20
25
30
35
40
45
0 10 20 30 40 50 60 70 80 90 100
0
10
20
30
40
50
60
70
80
90
100
20 30 40 50 60 70 80 90
Δp = 20 bar
Δp =
5 bar
0
10
20
30
40
50
60
0 20 40 60 80 100
0 20 40 60 80 100
0
10
20
30
40
50
60
70
∆p = 20 bar
∆p = 5 bar
de-energized 1→2
energized 2→1
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EN 5.126.3/10.19
DIMENSIONS
Millimeter (Inch)
Subject to technical modications
torque 4
+1
Nm
thick
After loosening mounting nut,
coil can be rotated through
360° and removed.
hex. SW 25.4 (1")
torque 45
+10
Nm
CAVITY
FC10-2
Form tools
Code Part No.
Countersink 176379
Reamer 165706
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: valves@hydac.com
NOTE
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.
VE = Visual Examination
* Allowed drilling zone (for manifold design)
** Sharp edges should be avoided by rounding
to a radius of 0.1 mm to 0.2 mm
*** largest pre-drilling diameter
(nominal tool diameter)
Fitting depth
Millimeter (Inch)
Subject to technical modications
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EN 5.126.3/10.19