DC7
Catalog HY15-3502/US
3-Way Pilot Operated Spool Valve
Series DH103
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Solenoid
Valves
Proportional
Valves
Coils &
Electronics
Bodies &
Cavities
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Technical Information
Specifications
Nominal Flow 38 LPM (10 GPM)
Maximum Inlet 240 Bar (3500 PSI)
Pressure
Leakage at 50 cc/min.
150 SSU (32 cSt) at 240 Bar (3500 PSI)
Cartridge Material All parts steel. All operating
parts hardened steel.
Operating Temp. -40°C to +93.3°C (Nitrile)
Range/Seals (-40°F to +200°F)
-31.7°C to +121.1°C (Fluorocarbon)
(-25°F to +250°F)
Fluid Mineral-based or synthetic with
Compatibility/ lubricating properties at viscosities
Viscosity of 45 to 2000 SSU (6 to 420 cSt)
Fliltration ISO code 16/13,
SAE Class 4 or better
Approx. Weight 0.23 kg (0.5 lbs.)
Cavity C10-4
(See BC Section for more details)
Form Tool Rougher NFT10-4R
Finisher NFT10-4F
General Description
3-Way Pilot Operated Spool Valve. The DH103A/B/C
Series Valves are used in normally closed or normally
open directional control three way circuits requiring
remote pilot actuation. The DH103-D/E Series Valves
are used to direct flow alternately from either side of a
closed loop transmission for cooling or filtering. All
external parts are zinc plated.
Operation
DH103A (Normally Open)
• Neutral (Deactivated)
Port (3) open to port (2), inlet port (4) is blocked.
• Activated with pilot pressure at port (1):
Port (4) open to port (3), port (2) blocked.
Note: There is an air breather vent plug in the end
cap to allow for air pressure equalization in the
spring chamber
DH103B (Normally Closed)
• Neutral (Deactivated)
Port (4) open to port (3), inlet port (2) is blocked.
• Activated with pilot pressure at port (1):
Port (3) open to port (2), port (4) blocked.
DH103C (Normally Open)
• Neutral (Deactivated)
Port (3) open to port (2), inlet port (4) is blocked.
• Activated with pilot pressure at port (1):
Port (4) open to port (3), port (2) blocked.
"A" SPOOL — DH103A
(2)
(3)
(4)
(1)
“A” SPOOL – DH103A
(3)
(4)
(2)
(1)
"B" SPOOL — DH103B
(3)
(4)
(2)
(1)
(1)
(2)
(3)
(4)
"C" SPOOL — DH103C
(3)
(4)
(2)
(1)
(1)
(2)
(3)
(4)
DC8
3-Way Pilot Operated Spool Valve
Series DH103
Catalog HY15-3502/US
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Proportional
Valves
Coils &
Electronics
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Bodies &
Cavities
Solenoid
Valves
Technical Information
Ordering Information
Dimensions
Millimeters (Inches)
Seals Body
Material
Port
Size
Code / Spool Type
A
Normally open
2 position,
vent to atmosphere.
B
Normally closed
2 position,
internally drain.
C
Normally open,
2 position,
internally drain.
Code Seals / Kit. No.
Omit Nitrile / (SK10-4N)
V Fluorocarbon /
(SK10-4V)
Code Body Material
Omit Steel
A Aluminum
DH103
10 Size
Pilot Operated
Spool Valve
Spool
Type
Code Port Size Body Part No.
Omit Cartridge Only
4P 1/4″ NPTF (B10-4-*4P)
6P 3/8″ NPTF (B10-4-*6P)
8P 1/2″ NPTF (B10-4-*6P)
6T SAE - 6 (B10-4-*6T)
8T SAE - 8 (B10-4-*8T)
6B 3/8″ BSPG (B10-4-6B)†
8B 1/2″ BSPG (B10-4-*8B)
* Add “A” for aluminum, omit for steel.
† Steel body only.
Pressure
Differential
Code Pressure Differential
Omit 5.5 Bar (80 PSI)
04 2.8 Bar (40 PSI)
16 11 Bar (160 PSI)
Performance Curve
Flow vs. Pressure Drop (Through cartridge only)
7/8-14 UNF-2A
Thread
Ø 15.8 (.62)
63.1
(2.48)
21.8
(.86)
Ø 17.4 (.68)
Ø 18.9 (.75)
(1)
(2)
(3)
(4)
1" Hex.
22 Nm
(16 lb. ft.)
Torque
3
SPOOL SHIFTED
SPOOL NEUTRAL
2 3
232
4 3 4
3
CBA
c
d c
a
ba
43
SPOOL
NO.
FLOW
DIRECTION
b
c
a
Flow (Q)
22.7
6
7.6
2
15.1
4
LPM
GPM
0
30.3
8
37.9
10
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
30
120 8.3
6.2
4.1
2.1
90
PSI Bar
60
Pressure Drop ( P)
(3)
(4)
(2)
(1)
(3)
(4)
(2)
(1)
(3)
(4)
(2)
(1)
