1
EN 5.125.8/08.24
Proportional ow throttle valve
PWS16Z-01/-03
Poppet type, pilot-operated,
normally closed
Screw-in cartridge valve UNF – 350 bar
2
1
up to 200 l/min
up to 350 bar
PRODUCT ADVANTAGES
z Continuous adjustment of the ow rate, depending on the coil current
z Excellent stability over the entire ow range
z Very good dynamic performance
z Optional: mechanical adjustment of a point on the performance curve
(cannot be combined with emergency manual function)
z Optional: Softshift function with longer switching times possible
z External surfaces with advanced corrosion protection thanks to ZnNi coating
(1,000 h salt spray test)
FUNCTION
DESCRIPTION OF FUNCTION
The proportional ow throttle valve is a pilot-operated, spring-loaded throttle valve in
poppet design – normally closed position.
It provides smooth and pressure-dependent throttling of ow from port 2 to port 1. The
pilot stage opens depending on the current fed through the coil and oil ows to the rear
side of the main spool through a combination of orices.
This creates a pressure dierence and the main piston follows the pilot stage. The valve
acts as a check valve when de-energised. Once a spring preload has been overcome,
ow can pass freely through the valve from 1 to 2 and the valve closes leaktight in the
opposite direction from 2 to 1.
Together with a pressure compensator the proportional ow throttle valve can be used
as a proportional ow regulator – for example when required to lift/lower variable loads at
the same velocity.
See example of application.
Example of lifting-lowering application
1
2
2
1
2
EN 5.125.8/08.24
TECHNICAL CHARACTERISTICS
1)
Operating pressure max. 350 bar
Flow rate max. 200 l/min
Internal leakage max. 10 drops/min (0.5 cm³/min) at nominal pressure, ν = 34 mm
2
/s
Pressure uid Hydraulic oil to DIN 51524 Part 1, 2 and 3
Ambient temperature range min. -20 °C to max. +60 °C
Temperature range of operating uid NBR: min. -30 °C to max. +100 °C
FKM: min. -20 °C to max. +120 °C
Viscosity range Min. 10 mm²/s to max. 420 mm²/s
Filtration Permitted contamination level of the pressure uid in acc. with
ISO 4406 Class 19/17/14 or better
MTTF
D
150 - 1200 years, assessment according to DIN EN ISO 13849-1:2016, Table C.1,
Conrmation of ISO 13849-2:2013; Tables C.1 and C.2
Installation position User-denable
Material Valve body: Steel
Spools: Steel, hardened and ground
Seals: NBR (standard)
FKM (optional)
Support rings: PTFE
Coil: Steel / polyamide
Cavity FC16-2
Weight 0.9 kg (with coil)
Electric system
Control current range 1600 mA, 5.0 Ω (12 V)
820 mA, 18.0 Ω (24 V)
Dither frequency 120 Hz - 250 Hz (120 Hz recommended)
Hysteresis with dither 4 - 6 % of I
nom
Repeatability ≤ 1.5 % of I
nom
Reversal error ≤ 2 % of I
nom
Sensitivity of response ≤ 1 % of I
nom
Coil design 50-2345
Note:
For optimum eciency, any trapped air should be vented using the bleed screw on the pole tube.
1)
See “Conditions and Instructions for Valves” in brochure 53.000
DIMENSIONS
Versions:
*
Tightening torque:
Steel housing (burst strength > 360 N/mm²): 160 Nm
Aluminium housing (burst strength > 330 N/mm²): 120 Nm Millimetre
(With torque tool according to DIN EN ISO 6789, tool type II class A or B). Subject to technical modications.
46.5
95 max. (-01 M)
Ø44.8
-01M (manual override)
-01/ -03
85 max. (-01)
All variations of solenoid
groups
2
1
28
Tightening torque
5 Nm
After loosening the
mounting nut, the coil can
be rotated through 360° and
removed.
Hex. Spanner width 22
Tightening torque*
Ø28.6
1 5/16-12 UN-2A
2
Tool T20/PH2
Tightening torque 2.75 Nm
3
EN 5.125.8/08.24
CAVITY
FC16-2
MODEL CODE
PWS16Z – 01M – C – N – 80 – 24 PG 18.0
Designation
Proportional ow throttle valve
Design
01 = standard
01M = with manual override
03 = damped
Body and ports
C = Screw-in cartridge valve
Sealing material
N = NBR (standard)
V = FKM
Flow range at Δp = 5 bar
80 = 80 l/min (progressive performance curve))
Further versions on request.
Nominal voltage
DC voltage:
12 = 12 V DC
24 = 24 V DC
Further versions on request.
Coil design (50-2345)
DC:
PG = DIN plug connector to EN175301-803
PT = AMP Junior Timer, 2-pole, radial
PL = two ying leads, 457 mm long, 0.75 mm²
PN = Deutsch plug connector, 2-pole, axial
Further versions on request.
Coil resistance
5.0 = 5.0 Ω (12 V)
18.0 = 18.0 Ω (24 V)
*
Permitted boring zone (for block design)
**
Sharp edges should be avoided by using a radius of 0.1 mm to 0.2 mm Millimetre
***
Largest pre-drilling diameter (nominal tool diameter) Subject to technical modications.
Ex.:
15
Max. Nominal-
:
(Included angle)
VE = Visual Examination
Fitting depth
27
Rz 10
Rz 6.3
Ra 6.3
1
±0.2
44.45
60° **
35.7
±0.2
28.6
+0.05
[
27.6±1]
47.34
±0.5
49
±0.5
***
20.05
±1
1 5/16-12 UN-2B
14.9 min.*
34.1 max.*
46.54
X
1
2
Rz1 10
Rz 6.3
Rz 6.3
VE
0.05
A B
0.05
A B
PD
0.02
B
A
30°
±1°
35.55
±0.05
R0.2
±0.2
R0.15
±0.05
3.5
±0.2
45°
X 4 : 1
Rz2 6.3
0.1
ACS
B
0.05
A B
ACS
4
EN 5.125.8/08.24
TYPICAL PERFORMANCE CURVE
0% l
max
Δp = 15 bar
Δp = 10 bar
Δp = 5 bar
100% l
max
90% l
max
80% l
max
70% l
max
60% l
max
50% l
max
Pressure drop Δp
Flow rate Q
Flow rate Q
Current consumption I
Pressure drop Δp
Flow rate Q
Δp/Q performance curve 1→2 | progressive (80) measured at ν = 34 mm
2
/s, T
Oil
= 46 °C
Q/I performance curve 2→1 | progressive (80) measured at ν = 34 mm
2
/s, T
Oil
= 46 °C
Δp/Q performance curve 2→1 | progressive (80) measured at ν = 34 mm
2
/s, T
Oil
= 46 °C
[bar] [psi]
[l/min]
[gpm]
25
20
15
10
5
0
0
25 50 75 125
150 175
200
50
40
30
20
10
0
300
150
0
[bar] [psi]
[l/min]
[gpm]
[l/min] [gpm]
[%]
100
80
60
40
20
0
35
30
25
0
10 20
30
50 60
70 90
40
80
100
Note:
Mechanical calibration of a point on the
Q/I performance curve is optionally possible at the
factory.
100
50
45
40
35
0
30
25
20
15
10
5
700
500
600
400
300
200
100
0
50
40
30
20
10
0
0
25 50 75 125
150 175
200
100
120
140
20
15
10
5
0
5
EN 5.125.8/08.24
Standard models
Designation Part no.
PWS16Z-01-C-N-80-0 3376799
PWS16Z-01-C-N-80-12PG-5 3525225
PWS16Z-01-C-N-80-24PG-18.0 3525213
PWS16Z-01-C-N-80-24PN-18.0 3888217
PWS16Z-01-C-V-80-0 4689995
PWS16Z-01-C-V-80-24PG-18.0 4689996
PWS16Z-01M-C-N-80-0 3817425
PWS16Z-01M-C-V-80-0 4553724
PWS16Z-01M-C-V-80-24PG-18.0 4553925
PWS16Z-03-C-N-80-0 4132585
Further versions on request.
Spare parts, seal kits
Designation Material Code Part no.
Seal kit NBR FS UNF16/N 3651395
Seal kit FKM FS UNF16/V 3651396
Housing
Designation Material Code Pressure Connections Weight Part no.
Inline connection housing Steel, zinc-plated FH162-SB8 350 bar G1" 1.6 kg 3032496
Inline connection housing Aluminium, anodised FH162-AB8 210 bar G1" 0.61 kg 3037193
Cavity tools
Designation Part no.
Countersink 176218
Reamer 176219
MATERIAL OVERVIEW
HYDAC FLUIDTECHNIK GMBH
Justus-von-Liebig-Str.
66280 Sulzbach/Saar
Germany
Phone: +49 6897 509-01
E-mail: valves@hydac.com
Internet: www.hydac.com
NOTE
The information in this brochure relates to the operating conditions and applications
described. For applications and operating conditions not described, please contact the
relevant technical department.
Subject to technical modications.
Documents are only valid if they have been obtained via the website and are up-to-date.