1
EN 5.125.1.1/08.24
Proportional ow throttle valve
PWS16ZR-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 ADVANTAGE
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 dierential pressure 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.
2
1
2
EN 5.125.1.1/08.24
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 pressurised 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 polished
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 Inom
Repeatability ≤1.5 % of Inom
Reversal error ≤2 % of Inom
Sensitivity of response ≤1 % of Inom
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
*
Tightening torque:
Steel housing (tensile strength > 360 N/mm²): 160 Nm
Aluminium housing (tensile 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*
Versions:
Ø28.6
1 5/16-12 UN-2A
2
Tool T20/PH2
Tightening torque 2.75 Nm
3
EN 5.125.1.1/08.24
CAVITY
FC16-2
*
Tightening torque:
Steel housing (tensile strength > 360 N/mm²): 160 Nm
Aluminium housing (tensile 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.
MODEL CODE
PWS16ZR – 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 = 2 ying leads, 457mm 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 5.125.1.1/08.24
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
100 % l
max
5
EN 5.125.1.1/08.24
Standard models
Designation Part no.
PWS16ZR-01-C-N-80-0 3643697
PWS16ZR-03-C-N-80-0 3646714
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" 1.66 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
COMMENT
The information in this brochure relates to the operating conditions and elds of application
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.
HYDAC FLUIDTECHNIK GMBH
Justus-von-Liebig-Str.
66280 Sulzbach/Saar
Germany
Tel: +49 6897 509-01
Email: valves@hydac.com
Internet: www.hydac.com