Proportional flow control valve
www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 17 36 2.6-651 E
Proportional 2-way flow control valve
◆ direct operated, pressure compensated
◆ Q
max
= 80 l/min
◆ Q
N max
= 80 l/min
◆ p
max
= 350 bar
M33 x 2
ISO 7789
DESCRIPTION
Direct operated, pressure compensated proportional flow control
valve in screw-in cartridge construction for cavity according to ISO
7789. With the solenoid deenergised, the control spool is held in the
closed position (QN) or open position (QO) by a spring. The change
of the electric current is followed by a proportional volume flow
change. From the input (1), the fluid flows over a throttle and a
control spool to the controlled output (2).
APPLICATION
Proportional flow control valves are suitable for precise feed
control systems, where the load current has to be maintained
constant independent of the input and output pressure. The
screw-in cartridge is perfectly suitable for installation in control
blocks and is installed in sandwich- (vertical stacked systems)
and in flange plates (corresponding data sheets in this register).
For machining the cartridge cavity in steel and aluminum blocks,
cavity tools are available (hire or purchase). Please refer to the
data sheets in register 2.13.
SYMBOL
Simplified
2
1
Detailed QN…
2
1
Detailed QO…
2
1
GENERAL SPECIFICATIONS
Designation Proportional 2-way flow control valve
Construction Direct operated
Mounting Screw-in cartridge construction
Nominal size M33 x 2 according to ISO 7789
Actuation Proportional solenoid
Ambient temperature -25…+70 °C (NBR)
-20…+70 °C (FKM)
Weight 0,90 kg
MTTFd 150 years
ELECTRICAL SPECIFICATIONS
Protection class Connection execution D: IP65
Connection execution J: IP66
Connection execution G: IP67 and IP69K
Relative duty factor 100 % DF
Standard nominal
voltage
12 VDC, 24 VDC
Limiting current at
50 °C
I
G
= 1560 mA (U
N
= 12VDC)
I
G
= 780 mA (U
N
= 24VDC)
Note!
Other electrical specifications see data sheet 1.1-180
(slip-on coil W) and 1.1-181 (slip-on coil M)
TYPE CODE
Q P PM33 - - / - #
Flow control valve
Normally closed N
Normally open O
Proportional
Screw-in cartridge M33 x 2
Nominal volume flow Q
N
normally closed normally open
32 l/min 32 32 l/min 32
63 l/min 63 63 l/min 63
80 l/min 80
Nominal voltage U
N
12 VDC G12
24 VDC G24
without coil X5
Slip-on coil Metal housing round W
Metal housing square M
Connection execution Connector socket EN 175301-803 / ISO 4400 D
Connector socket AMP Junior-Timer J
Connector Deutsch DT04-2P G
Sealing material NBR
FKM (Viton) D1
Manual override HB4,5
HB0
Design index (subject to change)
2.6-651
Proportional flow control valve
www.wandfluh.com Illustrations are not binding Data subject to change 2/4 Edition: 17 36 2.6-651 E
ACTUATION
Actuation Proportional solenoid, wet pin push
type, pressure tight
Execution W.S45 / 23 x 50 (Data sheet 1.1-180)
M.S45 / 23 x 50 (Data sheet 1.1-181)
Connection Connector socket EN 175301 – 803
Connector socket AMP Junior-Timer
Connector Deutsch DT04 – 2P
HYDRAULIC SPECIFICATIONS
Working pressure p
max
= 350 bar
Maximum volume flow Q
max
= 80 l/min
Volume flow direction 1 → 2
Leakage oil See characteristics
Nominal volume flow
range
Q
N
= 32 l/min, 63 l/min, 80 l/min (QN)
Q
N
= 32 l/min, 63 l/min (QO)
Hysteresis ≤ 6 % (QN); 10 % (QO)
at optimal dither signal
Repeatability ≤ 2 % at optimal dither signal
Fluid Mineral oil, other fluid on request
Viscosity range 12 mm
2
/s…320 mm
2
/s
Temperature range
fluid
-20…+70 °C
Contamination
eciency
Class 18 / 16 / 13
Filtration Required filtration grade ß 6…10 ≥ 75,
see data sheet 1.0-50
Proportional flow control valve
www.wandfluh.com Illustrations are not binding Data subject to change 3/4 Edition: 17 36 2.6-651 E
PERFORMANCE SPECIFICATIONS
Oil viscosity u = 30 mm
2
/s
Q = f (I) Volume flow signal characteristics QN
0 10 20 30 40 50 60 70 80 90 100
K0978
Q [l/min]
100
80
60
40
20
0
Q
N
= 80 l/min
Q
N
= 63 l/min
Q
N
= 32 l/min
I
[
%
]
Q = f (I) Volume flow signal characteristics QO
K4164
Q [l/min]
I [%]
0 10 20 30 40 50 60 70 80 90 100
80
70
60
50
40
30
20
10
0
Q
N
= 32 l/min
Q
N
= 63 l/min
Q = f (p) Volume flow pressure characteristics QN + QO
I = I
G
100
80
60
40
20
0
0 50 100 150 200 250 300 350
p [bar]
K0979
Q [l/min]
Q
N
= 80 l/min
Q
N
= 63 l/min
Q
N
= 32 l/min
Q
L
= f (p) Leakage volume flow characteristics QN + QO
400
300
200
100
0
0 50 100 150 200 250 300 350
p [bar]
K0980
Q [cm
3
/min]
DIMENSIONS
W =
45.3
96.3 49.7
148.9
85.1
M
D
=
M
D
=
9.5Nm
M33x2
(2)
(1)
s36
15
20
1017
18
50 60 70
5Nm
M =
45
84.8
10
HYDRAULIC CONNECTION
Cavity drawing according to ISO 7789–33–01–0–98
M33 x 2
(1)
(2)
(1)
Note!
For detailed cavity drawing and cavity tools see data
sheet 2.13-1005
PARTS LIST
Position Article Description
10 206.12..
206.7...
W.S45 / 23 x 50
M.S45 / 23 x 50
15 253.8000
239.2033
HB4,5 manual override
HB0 Screw plug
17 160.2222 O-ring ID 22,22 x 2,62 (NBR)
18 160.2220 O-ring ID 21,95 x 1,78 (NBR)
20 154.2701 Knurled nut M23 x 1,5 x 19,7
50 160.2298
160.6296
O-ring ID 29,82 x 2,62 (NBR)
O-ring ID 29,82 x 2,62 (FMK)
60 160.2238
160.6238
O-ring ID 23,81 x 2,62 (NBR)
O-ring ID 23,81 x 2,62 (FMK)
70 049.8297 Backup ring PTSM rd 22,1 x 26,6 x 1,4
Proportional flow control valve
www.wandfluh.com Illustrations are not binding Data subject to change 4/4 Edition: 17 36 2.6-651 E
ACCESSORIES
Flange body / sandwich plate Data sheet 2.6-680
Threaded body Data sheet 2.9-205
Proportional amplifier Register 1.13
Mating connector black (B) Article no. 219.2002
Technical explanations Data sheet 1.0-100
Hydraulic fluids Data sheet 1.0-50
Filtration Data sheet 1.0-50
Relative duty factor Data sheet 1.1-430
MANUAL OVERRIDE
HB4,5
Optionally: Screw plug (HB0), no actuation possible
SURFACE TREATMENT
◆ The cartridge body is gas-nitro-carburised
◆ The armature tube and the slip-on coil are zinc- / nickel-coated
SEALING MATERIAL
NBR or FKM (Viton) as standard, choice in the type code
INSTALLATION NOTES
Mounting type Screw-in cartridge M33 x 2
Mounting position Any, preferably horizontal
Tightening torque M
D
= 80 Nm Screw-in cartridge
M
D
= 5 Nm knurled nut
STANDARDS
Cartridge cavity ISO 7789
Solenoids DIN VDE 0580
Connection execution D EN 175301 – 803
Protection class EN 60 529
Contamination eciency ISO 4406
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