DH6/10

Spool type symbol
Valve type
2 position valve
Spool
type
03
04
11
Hydraulic symbols
a
A B
b
P T
Transient state
A B
a
b
P T
Spool
holding
method
Spring offset type
Detailed hydraulic symbols
(Example: External pilot and
external drain type)
Sol.
a
a
A B
b
P X Y
Sol.
a
a
A B
b
T
Simplified hydraulic symbols
(Example: External pilot and
external drain type)
Sol.
a
Sol.
a
X Y
X Y
a
a
A B
b
P T
A B
b
P T
Solenoid controlled pilot operated directional valve (1)
26
Hydraulic offset type
No spring type with detent
P X Y
Sol.
a
a
A B
b
P X Y
Sol.
b
T
T
Sol.
a
X Y
A B
a b
P T
Sol.
b
A B
A B
Sol. a o b Sol. a b
a
b
P T
P T
3 position valve
05
06
07
08
Spring center type
Sol.
a
a
A B
O
b
Sol.
b
Sol.
a
X Y
a
A B
O
P T
b
Sol.
b
10
P
X Y
T
12
13
17
18
19
20
21
Hydraulic center type
Sol.
a
a
A B
O
b
Sol.
b
Sol.
a
XY
a
A B
O
P T
b
L
Sol.
b
22
L P
X Y
T
23
1-23