4/3 Proportional Directional Valve, Size SAE 10
Q
max
= 8.0 gpm [30l/min],p
max
= 4000psi [280bar]
Direct acting, sliding-spool design, with solenoid operation
Series PDFC-10…
1/5
Reference: 520-P-113020-EN-01
Issue: 10.2015
S Compact construction for
cavity type C1040 – 7/8-14 UNF
S Operated by a proportional high pressure wet-armature
solenoid
S Minimum current threshold/ dead band (position b) is
factory set for better consistency
S Manual over-ride optionally available,
detented in neutral position
S Excellent reproducibility and repeatability,
and low hysteresis
S All exposed parts with zinc-nickel plating
S The slip-on coil can be rotated, and it can be
replaced without opening the hydraulic envelope
S Various plug-connector systems and voltages
are available
S Can be fitted in a line-mounting body
1 Description
Series PDFC10… proportional directional valves are direct
acting screwin cartridges with a sliding spool design and a
7/814 UNF mounting thread. In the neutral position, port 3
is closed and depending on the spool type, ports 2 and 4 are
connected to tank (1) (spool configuration M) or ports 1, 2
and 4 are all blocked (spool configuration L). The version
with the M spool is used in motor control circuits where
freewheeling in the neutral position is required. The L con
figuration is the version to use for cylinder applications.
These cartridges are particularly suitable for precise and
controlled lifting and lowering movements and can also be
used for reliable operation in mobile and industrial applica
tions. Best controllability is achieved when using the valve
with a bypass pressure compensator to control pressure
drop through the valve. Using the valve without pressure
compensator is not recommended because higher
pressure drops cause the flow to be more restricted (see
performance graph). The proportional directional valves is
optionally equipped with a manual override which is deten
ted in the neutral position. To unlatch the detent mechan
ism, the button on the back can be pushed. That allows shift
ing the valve in both directions. Pushing the knob shifts the
valve to position (a) (32 and 41) and pulling shifts it to
position (b) (34 and 21). All external parts of the cart
ridge are zinc plated and chromited (CrVI-free). The slip-on
coils can be replaced without opening the hydraulic enve
lope and can be positioned at any angle through 360°. If you
intend to manufacture your own cavities or are designing a
line-mounting installation, please refer to the section “Rela
ted data sheets”.
2 Symbol
PDFC-10-…-4M-M… PDFC-10-…-4L-M… PDFC-10-…-4M-0… PDFC-10-…-4L-0…
520-P-113020-EN-01/10.2015
Series PDFC-10…
2/5
3 Technical data
General characteristics Description, value, unit
Designation 4/3 proportional directional valve
Design sliding-spool design, direct acting, with solenoid operation
Mounting method screw-in cartridge 7/8-14 UNF
Tightening torque 40…45 ft-lbs [54…61Nm]
Size size SAE 10, cavity type C1040
Weight 1.65 lbs [0.75kg]
Mounting attitude unrestricted (preferably vertical, coil down)
Ambient temperature range -15°F … +125°F [-25°C … +50°C]
Hydraulic characteristics Description, value, unit
Maximum operating pressure - ports 2, 3, 4
- port 1
4000psi [280bar]
2000psi [140bar]
higher pressure, please consult BUCHER
Maximum flow rate - port 3 4 and 2 1
- port 3 2 and 4 1
7.0 gpm at p 140 psi [26l/min at p 10 bar]
6.2 gpm at p 140 psi [24l/min at p 10 bar]
at 100% duty cycle
Leakage flow rate (port to port) 15inch
3
at 3000psi [245ml/min at 210bar]
Hydraulic fluid HL and HLP mineral oil to DIN 51 524;
for other fluids, please contact BUCHER
Hydraulic fluid temperature range -15°F … +160°F [-25°C … +70°C]
Viscosity range 15…380mm
2
/s (cSt), recommended 20...130mm
2
/s (cSt)
Minimum fluid cleanliness
Cleanliness class to ISO 4406:1999
class 18/16/13
Electrical characteristics Description, value, unit
Supply voltage 12VDC, 24VDC
Control current 12 V = 0…1400mA, 24 V = 0…750 mA (100% duty cycle)
12 V = 0…1600mA, 24 V = 0…880 mA (50% duty cycle)
Power consumption at max. control current max. 19W
Coil resistance R - cold value at 20°C
- max. warm value
12 V = 5.8/24V = 20.9
12 V = 9.1/24V = 32.7
Recommended PWM frequency (dither) 200 Hz
Hysteresis with PWM 2…5 % I
N
Reversal error with PWM 2…5 % I
N
Sensitivity with PWM < 1.5 % I
N
Reproducibility with PWM < 3 % p
N
Relative duty cycle 100 % / 50 %
Protection class to ISO20653 / EN60529 IP 65 / IP 67 / IP 69K, see “Ordering code”
(with appropriate mating connector and
proper fitting and sealing)
Electrical connection 3-pin square plug to ISO 4400 / DIN 43 650 (standard)
for other connectors, see “Ordering code”
520-P-113020-EN-01/10.2015
Series PDFC-10…
3/5
4 Performance graphs
Q = f (I; p) Flow rate adjustment characteristic 4M
B)A)A)B)
EL_P0019.ai
0
1
2
3
4
5
10
[3.5]
[7.5]
[19]
[23]
[34]
[38]
I [mA]
9
6
[30]
[15]
7
[26]
8
[11]
1000500
400
300100300 1006001000 0 200 600500 200900 800 700 400 700 800 900
20001000
800
600200600 20012002000 0 400 12001000 4001800 1600 1400 800 1400 1600 1800
Q [gpm]
Coil b, connections 3 ³ 4 ; 2 ³ 1 Coil a, connections 3 ³ 2 ; 4 ³ 1
Q [l/min]
D
D
p = 145 psi
DD
p = 290 psi
D
D
p = 725 psi
D
D
p = 145 psi
D
D
p = 290 psi
D
D
p = 725 psi
DD
p = 2900 psi
DD
p = 1450 psi
DD
p = 2900 psi
DD
p = 1450 psi
A) 100% duty cycle
B) 50% duty cycle
--- depending on coil temperature, solenoid may draw a voltage higher than the nominal voltage
Q = f (I; p) Flow rate adjustment characteristic 4L
B)A)A)B)
EL_P0019.ai
0
1
2
3
4
5
10
[3.5]
[7.5]
[19]
[23]
[34]
[38]
I [mA]
9
6
[30]
[15]
7
[26]
8
[11]
1000500
400
300100300 1006001000 0 200 600500 200900 800 700 400 700 800 900
20001000
800
600200600 20012002000 0 400 12001000 4001800 1600 1400 800 1400 1600 1800
Q [gpm]
Coil b, connections 3 ³ 4 ; 2 ³ 1 Coil a, connections 3 ³ 2 ; 4 ³ 1
Q [l/min]
D
D
p = 145 psi
DD
p = 290 psi
D
D
p = 725 psi
D
D
p = 145 psi
D
D
p = 290 psi
D
D
p = 725 psi
DD
p = 2900 psi
DD
p = 1450 psi
DD
p = 2900 psi
DD
p = 1450 psi
A) 100% duty cycle
B) 50% duty cycle
--- depending on coil temperature, solenoid may draw a voltage higher than the nominal voltage
p = f (Q) Pressure drop - Flow rate characteristic 4M
P0020.ai
4M, coil b 750 [mA]4M, coil b 750 [mA]
4M, coil a 750 [mA]4M, coil a 750 [mA]
Valve completly openValve completly open
0
1
3
5
7
8
Q [l/min]
Q [gpm]
55 110 140 195
400 1200 1600 2800
D
0
4
8
19
23
30
D
2
4
6
800 2000 2400
85 170
26
15
12
27
p [bar]
p
3 ³ 4
[psi]
D
p
3 ³ 2
[psi]
p = f (Q) Pressure drop - Flow rate characteristic 4L
P0021.ai
0
1
3
5
7
8
Q [gpm]
55 110 140 195
400 1200 1600 2800
0
4
8
19
23
30
2
4
6
800 2000 2400
85 170
26
15
12
4L, coil b 750 [mA]4L, coil b 750 [mA]
4L, coil a 750 [mA]4L, coil a 750 [mA]
Valve completly openValve completly open
27
Q [l/min]
D
D
p [bar]
p
3 ³ 4
[psi]
D
p
3 ³ 2
[psi]
520-P-113020-EN-01/10.2015
Series PDFC-10…
4/5
5 Dimensions & sectional view
4/3 proportional directional valve
1
2
3
4
a
7
6
1
b
1 1/16
Ma = 40...45 ft−lbs
[54...61 Nm]
Ma = 2 ft−lbs
[3 Nm]
2.50
[63,6]
8.12 *
[206,2]
9.24
[234,7]
1.42
[36]
2.41
[61,2]
6.74
[171,1]
7/8−14 UNF
8
5
4
3
2
1
1
7
6
1
* overall length without
manual over-ride
b
a
1. Push button to unlatch
manual over-ride
2. Push or pull on whole
handle to shift valve
to position a or b
Seal kit
Item Qty. Description
1 4 O-ring 16 x 2
2 1 O-ring no. 910 0.755x 0.097
[19,18 x 2,46]
3 1 O-ring no. 016 0.614x 0.070
[15,60 x 1,78]
4 1 O-ring no. 015 0.551x0.070
[14,00 x 1,78]
5 1 O-ring no. 014 0.489x 0.070
[12,42 x 1,78]
6 2 Backup ring .634 x .052 x .047
[16,10 x 1,32 x 1,19]
7 2 Backup ring .572 x .052 x .047
[14,53 x 1,32 x 1,19]
8 1 Backup ring .510 x .052 x .047
[12,95 x 1,32 x 1,19]
IMPORTANT!
Item
no.
5207300112
=
Seal
kit
NBR
(Buna)
Item
no.
5207300113
=
Seal
kit
FKM
(Viton)
6 Installation information
ATTENTION!
Only qualified personnel with mechanical skills
may carry out any maintenance work. Generally,
the only work that should ever be undertaken is to
check, and possibly replace, the seals. When
changing seals, oil or grease the new seals tho
roughly before fitting them.
IMPORTANT!
When fitting the valves, use the specified tighten
ing torque for the mounting bolts. No adjustments
are necessary, since the cartridges are set in the
factory.
520-P-113020-EN-01/10.2015
Series PDFC-10…
5/5
7 Ordering code
N
PDFC = proportional directional valve
10 = nominal size SAE 10
N = NBR (Nitrile) seals (standard)
V = FKM (Viton) seals
(special seals - please consult BUCHER)
4L = cylinder spool, all ports closed in neutral
4M = motor spool, 2 and 4 connected to tank in neutral
A = factory set min current threshold at position b
M = with manual over-ride
0 = without manual over-ride
0 = cartridge only
02BA = line-mounting body G1/4 BSPP aluminum
02BS = line-mounting body G1/4 BSPP steel
03BA = line-mounting body G3/8 BSPP aluminum
03BS = line-mounting body G3/8 BSPP steel
06TA = line-mounting body SAE-#6 aluminum
06TS = line-mounting body SAE-#6 steel
08TA = line-mounting body SAE-#8 aluminum
08TS = line-mounting body SAE-#8 steel
... = voltage e.g. 24 (24 V)
D = current DC
(blank) = ISO 4400 / DIN 43 650 mating plug (standard, IP65)
M100 = without mating DIN plug
C = Kostal plug connection (IP65)
JT = Junior Timer radial plug connection (with protection diode, IP65)
IT = Junior Timer axial plug connection (with protection diode, IP65)
D = Deutsch plug connection DT04-2P (IP67/69K) mating plug not supplied
DT = Deutsch plug connection DT04-2P (with protection diode, IP67/69K)
S = AMP Superseal 1.5 (IP67) / Metri-Pack 150 (IP65)
F = flying leads (500 mm)
_
0 -M ---PDFC 24 D
A
-
4M10 --
8 Related data sheets
Reference (Old no.) Description
520-P-000050 The form-tool hire programme
520-P-000420 (0-042.0) Cavity Type C1040
520-P-000421 (0-042.1) Line-mounting body, 10 Series – 4-way
E 2015 by Bucher Hydraulics, Inc., 2545 Northwest Parkway, Elgin, Illinois 60124, USA
www.bucherhydraulics.com/commoncavit
y
info.el@bucherhydraulics.com
All rights reserved.
Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The
information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual
improvement, we reserve the right to amend the product specifications contained in this catalogue.
Classification: 430.300.-.305.310.310.300.300