LS-01
PRIORITY VALVES FOR OH/4 AND OH/3 TYPE LS...
The Priority Valves distribute and trace the hydraulic flow from the supply pump
of the hydraulic system to the hydraulic components which control and run the
vehicle.
The Priority Valves are used only with the OH/4-OH/4E-OH/3-OH/3E hydrostatic
steering units. When connected, the steering unit and the priority valve represent
sophisticated hydraulic tracing system that controls the flow in both main pipelines
of the hydraulic system (the working and control one) at any time of its operation.
As a static signal, the "LS" signal must be used in systems with circuit stability.
The connection between the LS priority valves and the OH/3-OH/3E steering units
has to be as short as possible, but should not exceed 1,5m (for iron pipe with Ø4
internal diameter). When a rubber hose is used this length has to be even shorter.
LSA LS
MODULARLY MOUNTING
L
PEFT
R
CF LS T R
L
L
PEFT
R
CF LS T R
L
P
CF EF
LS
P
CF EF
LS
Static signal
LSSA.../40,80...
Dinamic signal
LSA.../40,80...
PIPE MOUNTING
Static signal
LSS.../40,80...
Dinamic signal
LS.../40,80...
4
0
010
[l/min]
P-EF
[bar]
20 30 40
2
6
8
10
12
14
Qp
10 bar
7 bar
4 bar
Min.
4
0
0
[l/min]
P-EF
[bar]
20 40
2
6
8
10
12
14
Qp
10 bar
7 bar
4 bar
Min.
60 80
LS...40 LS...80
LS-02
Connection to the OH/4... is done with 2 screws M10x1x45-10.9 DIN 912 or
with 2 screws 3/8-24 UNF ANSI B18.3-76; 44,5 mm long.
Tightening torque: 4,5±0,5 daNm.
SPECIFICATION DATA
Parameters
Type
LS(S)A LS(S)
Rated flow, (L/min)
40; 80
Control Spring Pressure, (bar)
47
10
47
10
Max. Pressures in Oil Ports:
(bar)
P, EF, R, L
250
CF
175
T15
Weight, avg., [kg]
2,7 1,2
P - pump, EF - excess flow, CF - control flow (first priority oil flow),
L - left, R - right, LS - load sensing, T - tank
DIMENSIONS AND MOUNTING DATA - LS(S)A/40,80
123
87
87
60
PL
PT
EF
44
L
R
EF
*
78
3520
42
2xØ29
0.5 mm depth
3xØ25
0.5 mm depth
T
P
THREADED PORTS FOR LS
Code
Ports - P, EF
Thread
Ports - T, R, L
Thread
A
7/8 - 14 UNF
O-ring 18 mm depth
3/4 - 16 UNF
O-ring 18 mm depth
-
G1/2
18 mm depth
G3/8
18 mm depth
M
M22x1,5
18 mm depth
M18x1,5
18 mm depth
LS-03
DIMENSIONS AND MOUNTING DATA - LS(S)/40,80
CF
CF
EF
3xØ29
0.5 mm depth
19.7
42
142
40 25±0.3
80±0.3
20.319.7
S=24
EF
LS
P
P
Ø8.5
+0.2
LS
20.5
41±0.3
Code
Ports - P, EF
Thread
Port - CF
Thread
LS - Port
-
G1/2
18 mm depth
G1/2
18 mm depth
G1/4
14 mm depth
A
7/8 - 14 UNF
O-ring 18 mm depth
3/4 - 16 UNF
O-ring 18 mm depth
7/16 - 20 UNF
O-ring 12,7 mm depth
M
M22x1,5
18 mm depth
M22x1,5
18 mm depth
G1/4
14 mm depth
LS-04
PRIORITY VALVES FOR OH/3... TYPE LS.../160
The Priority Valves LS.../160 have a built-in pilot pressure relief valve, which protects the steering unit against excess
pressure. The pilot pressure relief valve operates with the Shuttle of the Priority valve to limit the maximum steering
pressure P-T measuredacross thesteeringunits ports.
P T
LSEFCF
P T
LSEFCF
P T
LSEFCF
Static signal
LSS.../160...
Dinamic signal
LS.../160...
Static signal with External Pilot
LSSE.../160...
4
0
0
[l/min]
P-EF
[bar]
20
2
6
8
10
12
14
Qp
10 bar
7 bar
4 bar
Min.
LS...160
10 30 40 50 60 70 80 90 100 110 120 130 140 150 160
SPECIFICATION DATA
Parameters
Type
LS(S),(E)
Rated flow, (L/min)
160
Control Spring Pressure, (bar)
4710
Max. Pressures in Oil Ports:
(bar)
P, EF, R, L
250
CF
210
T15
PP 210
Standart Relief Valve Pressure Settings, (bar)
175
Weight, avg., [kg]
4,4
Adjusted valve pressure from 80 till 210 bar upon customer request.
P - pump, EF - excess flow, CF - control flow (first priority oil flow),
L - left, R - right, LS - load sensing, T - tank, PP - pilot pressure.
PP
LS-05
DIMENSIONS AND MOUNTING DATA - LS(S)(E)/160
Code
Ports - P, EF
Thread
Port - CF
Thread
LS, PP, T - Ports
-
G3/4
20,5 mm depth
G1/2
18,5 mm depth
G1/4
12,5 mm depth
A
1 1/16 - 12 UNF
O-ring 20,5 mm depth
3/4 - 16 UNF
O-ring 18,5 mm depth
7/16 - 20 UNF
O-ring 12,5 mm depth
M
M27x2
20,5 mm depth
M18x1,5
18,5 mm depth
M12x1,5
12,5 mm depth
T
P
PP
LS
EF
CF
40
99
P
2xØ42
0.8 mm depth
35 65
130
24
32
24
32.8 75
177.5
32.5
65
3560.5
2xØ8.9±0.2
max 130
121
T
LS
59
122
EF
CF
LS-06
LS
12 4
ORDER CODE
1
Signal Type
S
with Static signal
omit
with Dinamic signal
2
Mounting
omit
Pipe Mounting for OH/3
A
Modularly Mounting for OH/4
3
Rated Flow, l/min
40
80
4
Control Spring Pressure , bar
4
7
10
5Ports
omit
BSPP (ISO 228)
A
SAE (ANSI B 1.1 - 1982)
M
Metric (ISO 262)
6
Option (Paint)
omit No Paint
P Painted
PC Corrosion Protected Paint
5
Design Series
omit
Factory specified
1
Signal Type
omit
with Dinamic signal
S
with Static signal
E
with Static signal with External Pilot
2
Rated Flow, l/min
160
3
Control Spring Pressure , bar
4
7
10
4
Ports
omit
BSPP (ISO 228)
A
SAE (ANSI B 1.1 - 1982)
M
Metric (ISO 262)
5
Option (Paint)
omit No Paint
P Painted
PC Corrosion Protected Paint
6
Design Series
omit
Factory specified
3567
/-
Colour at customer’s request.
The priority valves are mangano-phosphatized as standard.
LS
12 4
ORDER CODE
356
/-
Colour at customer’s request.
The priority valves are mangano-phosphatized as standard.
