Technical Information

Steering
OLS Priority Valveswww.danfoss.com

Technical Information
OLS Priority Valves

Revision history

2 | © Danfoss | May 2023

Table of revisions
Date

ChangedRev

May 2023

First edition

0101

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Technical Information
OLS Priority Valves
Contents
Overview
A wide range of steering components..................................................................................................................................... 4
Characteristic features for steering units............................................................................................................................4
Conversion factors......................................................................................................................................................................5
Survey of literature on Danfoss steering components..................................................................................................5
Types
General................................................................................................................................................................................................. 6
OLSA 40/80......................................................................................................................................................................................... 7
OLSi 80..................................................................................................................................................................................................8
OLS 120................................................................................................................................................................................................ 9
OLS 160..............................................................................................................................................................................................10
OLS 320..............................................................................................................................................................................................11
OLSP 80..............................................................................................................................................................................................12
System sizing and product selection
Technical data
Maximum pressure on connections........................................................................................................................................14
Pressure drop in priority valves.................................................................................................................................................14
Pressure drop P-EF for static priority valves......................................................................................................................... 14
Pressure drop P-EF for dynamic priority valves...................................................................................................................18
OLS 160 and OLS 320, pilot pressure relief valve (P - T, Qp) characteristics............................................................. 21
Weights..............................................................................................................................................................................................22
Dimensions
OLSA 40, OLSA 80.......................................................................................................................................................................... 23
OLSi 80............................................................................................................................................................................................... 25
OLS 120..............................................................................................................................................................................................26
OLS 160..............................................................................................................................................................................................27
OLS 320..............................................................................................................................................................................................28
OLSP 80 dimensions......................................................................................................................................................................29
Code numbers
OLSA static priority valves for OSPC/OSPD load sensing static steering units........................................................30
OLS static priority valves for OSPB/OSPC/OSPD/OSPL LS static steering units.......................................................30
OLSA dynamic priority valves for OSPC/OSPD LS dynamic steering units............................................................... 31
OLS dynamic priority valves for OSPB/OSPC/OSPD/OSPL LS dynamic steering units..........................................31
OLS high dynamic for OSPC/OSPD high dynamic, OSPF/OSPDF/OSPU LS dynamic steering units................32
Variants and ordering specifications
Priority valves master model code...........................................................................................................................................33
Variants codes for OLS MMC......................................................................................................................................................33
Priority valve type and size....................................................................................................................................................33
P, CF, EF, L & R ports................................................................................................................................................................. 34
LS, PP, T ports............................................................................................................................................................................. 35
Port interface, PRV setting, spring setting....................................................................................................................... 35
PP (internal/external), LS, dynamic orifice.......................................................................................................................36
Spool............................................................................................................................................................................................. 37
Special features, label, paint................................................................................................................................................. 38© Danfoss | May 2023

BC444069075966en-000101 | 3

Technical Information
OLS Priority Valves
Overview
A wide range of steering components
Danfoss offers steering solutions both at component and system levels.

Danfoss is one of the largest producers in the world of hydrostatic steering components on off-roadvehicles. Our product range makes it possible to cover applications of many types, such as ordinary 2
wheel steering (also known as Ackermann steering) and articulated steering. Danfoss offers over 2,200
different steering units and 300 different priority valves categorized in types, variants and sizes.
Danfoss offers:
For hydrostatic steering systems
Product type

Displacement

Rated flow

Steering units40-1200 cm3/rev [2.44 73.2 in3/rev

Max. 100 l/min [26.4 US gal/ Max. 240 bar [3481 psi]min]

Priority valves-40, 80, 120, 160, 320 l/min[10.6, 21.1, 31.7, 42.3, 84.5
US gal/min]

Pilot operated flow
amplifiers (factors: 4, 5, 8,
or 10)

Steering pressure

See control flow (CF) data
in Maximum pressure on
connections on page 14

240 and 400 l/min [63.4 and Max. 240 bar [3480 psi]
105.7 US gal/min]

Characteristic features for steering units•••

4 | © Danfoss | May 2023

Low steering torque: from 0.7 to 4 N•m in normal steering situations
Low noise levelLow pressure drop

BC444069075966en-000101

Technical Information
OLS Priority Valves
Overview•••

Many types available: Open center Non-reaction, Open center Reaction, Power Beyond, Closed center
Non-reaction, Load Sensing, Load Sensing Reaction
One or more built-in valve functions: relief valve, shock valves, suction valves, non-return valve in Pline and LS-line
Optional port connections according to ISO, SAE or DIN standards

Conversion factors
1 N•m = [8.851 lbf•in]

1 l = [0.264 US gal]

1 N = [0.2248 lbf]

1 bar = [14.5 psi]

1 mm = [0.0394 in]°F = [1.8°C + 32]

1 cm3 = [0.061 in3]

Survey of literature on Danfoss steering components
Detailed data on all Danfoss steering components and accessories can be found in our steering
component catalogs, which is divided into the following individual sub catalogs:
General information

Steering components

Technical data on open center, and closed center steering units

OSPB, OSPC, and OSPD

Technical data on load sensing steering units, priority valves and flow
amplifiers

OSPB, OSPC, OSPF, OSPD, OSPDF, OSPL, OSPBX, and OSPLXTechnical data on priority valves

OLS

Technical data on priority flow amplifiers

OSQ

Technical data on valve blocks

OVPL and OVR

Technical data on load sensing steering units with amplification

OSPU

Technical data on steering units with zero dead band

OSPS

Technical data on steering units with integrated priority valve

VSPP

Technical data on hydraulic and EH pilot operated steering valves,electrical actuation modules and appropriate steering units.

EHPS, EHPS w. OLS 320, PVE for EHPS and OSPCXTechnical data on combined steering unit/EH steering valves and steering
wheel sensors

OSPE

Technical data on electrohydraulic steering valves

EHi

Technical data on steering wheel sensors

SASA

For technical information on individual variants, please contact the Danfoss Sales Organization.

© Danfoss | May 2023

BC444069075966en-000101 | 5

Technical Information
OLS Priority Valves
Types

GeneralDanfoss offers a wide range of priority valves inside the OLS product family.
The OLS product family includes 6 base sizes, covering the far most customer demands for performanceand capacity.
The types are:
• OLSA 40/80• OLSi 80• OLS 120
• OLS 160
• OLS 320
• OLSP 80

6 | © Danfoss | May 2023

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Technical Information
OLS Priority Valves
Types
OLSA 40/80
The OLSA 40 and OLSA 80 “flange on” priority valves are used in load sensing steering systems, built onto
OSPC LS (OLSA) and OSPD LS (OLSA) steering units.
OLSA 40, OLSA 80

The program of OLSA covers:
For max pump flow 40 and 80 l/min
For LS static and LS dynamic steering units••

Schematics
OLSA static (left); OLSA dynamic (right)
LS
L

L

CF

T

LS
R

R

L

L

CF

T

C
A
P

T

EF
152B135.11© Danfoss | May 2023

A:

PP-damping orificeB:

LS orificeC:

Dynamic orifice

P

R

R

B
T

EF
152B170.11

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Technical Information
OLS Priority Valves
Types
OLSi 80
The OLSi 80 "in-line" priority valves are used in load sensing steering systems together with OSP-variant
LS static and LS dynamic steering units.
The OLSi 80 is replacing OLS 40/80 because it is more compact and easier to adapt in steering systems.
OLSi 80

The program of OLSi 80 covers:• For max pump flow 80 l/min• With internal or external PP
Schematics
OLS static with external PP (left); OLS dynamic with internal PP (right)
CF

EF
CF

EF

LS

PP

LS

P
P

8 | © Danfoss | May 2023

152B171.10

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Technical Information
OLS Priority Valves
Types
OLS 120The OLS 120 "in-line" priority valves are used in load sensing steering systems together with OSP-variant
LS static and LS dynamic steering units.
OLS 120

The program of OLS 120 covers:
For max pump flow 120 l/min
With internal PP••

Schematics
OLS static (left); OLS dynamic (right)
CF

EF

CF

EF

LS

P

P
152B134.10© Danfoss | May 2023

LS

152B171.10

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Technical Information
OLS Priority Valves
Types
OLS 160
The OLS 160 “in-line” priority valves are used in load sensing steering systems together with OSP-variant
LS static and LS dynamic steering units.
OLS 160

The program for OLS 160 covers:• For max pump flow 160 l/min• With or without integrated pilot relief valve• With internal or external PP
Schematics
OLS static with external PP (left); OLS dynamic with internal PP (right)
CF

EF

CF

EF

LS

PP

P
P

10 | © Danfoss | May 2023

LS

T

T
152B172.11

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Technical Information
OLS Priority Valves
Types
OLS 320The OLS 320 “in-line” priority valves are used in load sensing steering systems together with OSP-variant
LS static and LS dynamic steering units.
OLS 320

The program of OLS 320 covers:
For max pump flow 320 l/min
With or without integrated pilot relief valve
With internal PP•••

Schematics
OLS 320 static (left); OLS 320 dynamic (right)
CF

EF

CF

EF

LS

LS

P
P

© Danfoss | May 2023

T

T
152B172.11

BC444069075966en-000101 | 11

Technical Information
OLS Priority Valves
Types
OLSP 80
The priority valve OLSP 80 is to be used in steering systems with Danfoss gear pumps (Group 2, standard
and shhark® and OSP-variant LS static and LS dynamic steering units.
OLSP 80

The program for OLSP 80 covers:
For max pump flow 80 l/min
With internal PP••

Schematics
OLSP 80 static (left); OLSP 80 dynamic (right)
CF

EF

CF

EF

LS

P

P
152B134.10

12 | © Danfoss | May 2023

LS

152B171.10

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Technical Information
OLS Priority Valves
System sizing and product selection
The steering system pump is sized so that satisfactory performance is achieved for both steering andworking hydraulics - even at idle.
Before selecting a priority valve, consider the following:• The pump flow: nominal size of priority valve must match with maximum pump flow
• The type of steering unit
‒ Load Sensing static: OSPB, OSPC, OSPD, OSPL; OLS unit must be static type‒ Load Sensing dynamic: OSPB, OSPC, OSPD, OSPL; OLS unit must be dynamic type, providing
dynamic flow in the 0.6-0.9 l/min range‒ Load Sensing high dynamic: OSPC LS high dynamic, OSPD LS high dynamic; OLS must be highdynamic type, providing dynamic flow in the 1.0 - 1.3 l/min range‒ Load Sensing high dynamic: all OSPU LS, all OSPF LS; OLS must be high dynamic type, providing
dynamic flow in the 1.1 - 1.5 l/min range• The displacement of the steering unit: higher displacement and higher demand for maximum
steering speed requires additional control spring pressure in the priority valve.
• The application's requirement for energy optimization, initial steering response time and stability asthese parameters govern the selection for control spring pressure• Whether the priority valve should have internal PP (pilot pressure) or external PP-connection depends
on the pressure drop in the pump line between the priority valve's CF-port (controlled flow) and thesteering unit's P-port. With normal hose and tube dimensions and less than 5 meters distance
between priority valve and steering unit, the immediate choice is typically a priority valve withinternal PP.
The code numbers in section Code numbers on page 30 list the most frequently used priority valves
used in combination with Danfoss steering unit types.
All priority valves in the code number tables (except OLS 160 static) have internal PP connection. OLS 160
static priority valves have an external PP connection.

© Danfoss | May 2023

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Technical Information
OLS Priority ValvesTechnical data
For common technical data, please see the General Steering Components document.
Maximum pressure on connections
Maximum pressure on connections
Priority
valve

Rated flow
to P

P, EF

CF

L, R

LS

T

PP

Unit

l/min [USgal/min]bar [psi]

OLSA 4040 [10.57]

OLSA 80

80 [21.13]

250 [3625]

240 [3480]

280 [4061]

240 [3480]

20 [290]-

250 [3625]

240 [3480]

280 [4061]

240 [3480]

20 [290]-

OLSi 80
OLS 12080 [21.13]

300 [4351]

280 [4061]-

280 [4061]-

280 [4061]

120 [31.70]

300 [4351]

280 [4061]-

280 [4061]--

OLS 160

160 [42.27]

350 [5076]

280 [4061]-

280 [4061]

15 [217]280 [4061]

OLS 320320 [84.54]

300 [4351]

280 [4061]-

280 [4061]

40 [580]

280 [4061]

OLSP 80

80 [21.13]

280 [4061]

240 [3480]-

240 [3480]--

Pressure drop in priority valves
Priority valve pressure drop graphs were created using the specific parameters detailed below.
The pressure drop data is calculated from measurements on a representative sample of priority valvesfrom production. Oil with viscosity of 21 mm²/s at 50 °C [102 SUS at 122 °F] was used during measuring.
Measurement made when pressure on the LS connection is zero (steering unit in neutral position). The
minimum curves apply when the pressure on the EF connection is higher than the actual control springpressure. The curves for control spring pressure of 4 , 7, 10 or 12 bar [58, 101, 145 or 174 psi] apply whenpressure on the EF connection is zero.
Pressure drop P-EF for static priority valves
OLSA 40
P-EF

P-EF

psi

bar

200

14

175

12

150

10

125

10 bar145 psi

7 bar
102 psi

8

100

4 bar
58 psi

6
75
50

4

25

2

0

0

min

Qp
0
0

5
1

10
2

15
3

4

20
5

25
6

30
7

8

35
9

40
10

l/min

Qp
US gal/min
152B139.11

14 | © Danfoss | May 2023

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Technical Information
OLS Priority ValvesTechnical data
OLSA 80
P-EF

P-EF

psi

bar
16

225
200

14

175

12

150

10

125

10 bar145 psi
7 bar
102 psi
4 bar
58 psi
min.

8

100

6

75

4

50
25

2

0

0
0

10

0

20

2

4

30
6

40

8

50

10

12

60
14

70

16

18

80

Qp

l/min

Qp
US gal/min

20

152B80.11

OLSi 80
P-EF

P-EF

psi
175

bar
12

150

10

125

7 bar
102 psi
4 bar
58 psi
min

8

100
6
75
50

4

25

2

0

0

Qp
0

10

0

2

20
4

30
6

40
8

50
10

60
12

70
14

80
16

l/min

Qp
18 US gal/min
152-181.10© Danfoss | May 2023

BC444069075966en-000101 | 15

Technical Information
OLS Priority ValvesTechnical data
OLS 120

P-EF

P-EF

psi

bar

16

225
200

14

175

12

150

10

125

10 bar145 psi
7 bar
102 psi

8

100

6

min

75
4

50

2

25

Qp
l/min

0

0

0

10

0

20

30

40

5

50

60

10

70

15

80

90

20

100

110

25

120

Qp
US gal/min

30

152B165.11

OLS 160
P-EF
psi
275
250

P-EF
bar
20

225

16

200

14

175

12

150

10

125
100
75

12 bar
174 psi

18

10 bar145 psi
7 bar
102 psi
min

8
6

50

4

25

2

0

0
0
0

10

20
5

30

40
10

50

60
15

70

80
20

90

100
25

110
30

120

130
35

140

150
40

160

Qp
l/min
Qp
US gal/min
152B166.10

16 | © Danfoss | May 2023

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Technical Information
OLS Priority ValvesTechnical data
OLS 320
P-EF
psi
250
225

P-EF
bar
18

200

14

175

12

150

10

125

8

100
75
50

10 bar145 psi

16

7 bar
102 psi

min.

6
4

25

2

0

0

Qp
0

20

40

60

80

100

120

0

5

10

15

20

25

30

140
35

160
40

180
45

200
50

220

55

60

240

260

280

300

320 l/min

65

70

75

80

Qp
85 US gal/min
152B185.10

OLSP 80
P-EF

P-EF

psi
175

bar
12

150

10

125

7 bar
102 psi
4 bar
58 psi
min

8

100
6
75
50

4

25

2

0

0

Qp
0

10

0

2

20
4

30
6

40
8

50
10

60
12

70
14

80
16

l/min

Qp
18 US gal/min
152-181.10© Danfoss | May 2023

BC444069075966en-000101 | 17

Technical Information
OLS Priority ValvesTechnical data
Pressure drop P-EF for dynamic priority valves
OLSA 40
P-EF

P-EF

psi

bar

225

16

200

14

175

12

150

10

125
100
75
50

10 bar145 psi
7 bar
102 psi

84 bar
58 psi

6
4

25

2

0

0

min

0
0

5
1

10
2

15
3

4

20
5

25

30

6

7

8

35
9

Qp
l/min

40

Qp
US gal/min

10

152B174.10

Curves for OLS/OLSA 40 dynamic for OSPB, OSPC, OSPD LS dynamic
OLSA
P-EF
psi
275
250

P-EF
bar
20

225

16

200

14

175

12

150

10

125
100
75

10 bar145 psi

18

A+B

7 bar
102 psi
4 bar
58 psi

A+B

min

A+B

8

min

6

50

4

25

2

0

0

A
B
0
0

10
2

20
4

30
6

8

40
10

50
12

60
14

16

70
18

80
20

Qp
l/min
Qp
US gal/min
152B175.10

A OLSA 80 dynamic for OSPB, OSPC, OSPD LS dynamic
B OLSA 80 dynamic with low pressure drop (P-EF) spool for OSPB, OSPC, OSPD LS dynamic
Do not use OLSA for OSPF, OSPDF, OSPU and OSPL. Only use OLS in-line for these steering types.

18 | © Danfoss | May 2023

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Technical Information
OLS Priority ValvesTechnical data
OLSi 80
P-EF

P-EF

psi
175

bar
12

150

10

125

7 bar
102 psiB
4 bar
58 psi

A

8

min

100
6

A

75
4

50
25

2

0

0

A+B
0

10

0

2

20
4

30

40

6

8

50

60

10

12

70
14

Qp
l/min

80

Qp
18 US gal/min

16

152-182.10

A

OLSi 80 dynamic for OSPB, OSPC, OSPD, OSPL LS dynamic

B

OLSi 80 dynamic for OSPF LS and OSPU LS dynamic

OLS 120
P-EF
psi

P-EF

bar

20
275
250
225

16

200

14

175

12

150

10

125

8

100
75
50
25
0

10 bar145 psi
7 bar
102 psi

18

7 bar
102 psi

A
B
A

min

6
4
2

A+B

0
0
0

10

20
5

30

40
10

50

60
15

70

80
20

90

100
25

110

120
30

Qp
l/min

Qp
US gal/min
152B176.10

A OLS 120 dynamic for OSPB, OSPC, OSPD, OSPL LS dynamic
B OLS 120 high dynamic for OSPC/OSPD LS high dynamic, OSPF/OSPDF LS, OSPU LS© Danfoss | May 2023

BC444069075966en-000101 | 19

Technical Information
OLS Priority ValvesTechnical data
OLS 160
P-EF
psi

P-EF

450

bar
32

400

28

350

24

300
250
200
150

12 bar
174 psi

A

20

B

A

16
12

100

8

50

4

0

0

10 bar145 psi
7 bar
102 psi
7 bar
102 psi
min

A
A+B
0

10

0

20

30

5

40

50

10

60

70

15

80

90

20

100

110

25

120

130

30

140

35

150
40

Qp
l/min

160

Qp
US gal/min
152B177.10

A OLS 160 dynamic for OSPB, OSPC, OSPD, OSPL LS dynamic
B OLS 160 high dynamic for OSPC/OSPD LS high dynamic, OSPF/OSPDF LS, OSPU LS
OLS 320
P-EF
psi
450

P-EF
bar
30

10 bar145 psi

400
350
300

25
7 bar
102 psi

20

250
200
150

15
10

min

100
50
0

5

Qp

0
0

20

40

60

80

100

120

0

5

10

15

20

25

30

140
35

160
40

180
45

200
50

55

220
60

240

260

280

300

320 l/min

65

70

75

80

Qp
85 US gal/min
152B186.10

20 | © Danfoss | May 2023

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Technical Information
OLS Priority ValvesTechnical data
OLSP 80
P-EF

P-EF

psi
175

bar
12

150

10

125

7 bar
102 psiB
4 bar
58 psi

A

8

min

100
6

A

75
4

50
25

2

0

0

A+B
0

10

0

2

20

30

4

40

6

50

8

10

60
12

70
14

Qp
l/min

80

Qp
18 US gal/min

16

152-182.10

A OLSP 80 dynamic for OSPB, OSPC, OSPD, OSPL LS dynamic
B OLSP 80 high dynamic for OSPC/OSPD LS high dynamic, OSPF/OSPDF LS, OSPU LS

OLS 160 and OLS 320, pilot pressure relief valve (P - T, Qp) characteristics
OLS 160 and OLS 320 with pilot pressure relief valves are used in connection with Danfoss steering units
without pilot pressure relief valve, normally steering unit type OSPL. The pilot pressure relief valve
protects the steering unit against excessive pressure. The pilot pressure relief valve in OLS 160/320
operates with the priority valve spool in the OLS 160/320 to limit the maximum steering pressure P-T
measured across the steering unit ports.
OLS 160: The pilot pressure relief valve is set when an oil flow of 80 l/min [21 US gal/min] is supplied to
OLS 160.
OLS 320: The pilot pressure relief valve is set when an oil flow of 40 l/min [11 US gal/min] is supplied to
OLS 320.
OLS 160 and OLS 320: Setting tolerance: rated value +10 bar [145 psi]
OLS 160
P-T
psi
2800

P-T
bar
190

2700
2600
2500

180

170

2400
2300
2200
0

160

150
0

0
0

10

20
5

30

40
10

50

60
15

70

80
20

90

100
25

110
30

120

130

140

35

150
40

160

Qp
l/min
Qp
US gal/min
152B141.11© Danfoss | May 2023

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Technical Information
OLS Priority ValvesTechnical data
OLS 320
HP-HT HP-HT
psi
3000
2900

bar
210
200

2800
2700

190

2600

180

2500
2400
2300
2200
2100

170
160
150

0

Qp

0
0

40

0

10

80
20

120
30

160
40

200
50

240
60

280
70

320 l/min
80Qp
US gal/min
152B187.10

Qp = Pump flow
Weights

22 | © Danfoss | May 2023

Type

Weight kg [lb]

OLSA 40/80

2.1 [4.63]

OLSi 80

1.15 [2.53]

OLS 120

2.1 [4.63]

OLS 160

4.4 [9.7]

OLS 320

5.9 [13.0]

OLSP 80

1.0 [2.2]

BC444069075966en-000101

Technical Information
OLS Priority Valves
Dimensions

OLSA 40, OLSA 80 dimensions
44 [1.73]
Y

29 [1.14]
Y

R

L

120 [4.72]

7 [0.28]

87 [3.43]

XL

87 [3.43]

P

T

R/CF

EF

EF

20 [0.79]
55 [2.17]

44 [1.73]

29 [1.14]

P

T

X© Danfoss | May 2023

Y

76 [2.99]

20 [0.79]

40 [1.57]

152B81.12

BC444069075966en-000101 | 23

Technical Information
OLS Priority Valves
Dimensions
Dimensions and port depth

24 | © Danfoss | May 2023

Dimension/port

Metric units

Imperial unitsP, EF

G 1/2 w. spot face
14 mm [0.55 in] deepx = 34 mm [1.34 in],max. 1,5 mm [0.06 in] deepOr
M18 x 1.5 ISO 6149
14.5 mm [0.57 in] deepx = 29 mm [1.14 in],max. 1.5 mm [0.06 in] deepOr
M22 x 1.5 ISO 6149,
15.5 mm [0.61 in] deepx = 34 mm [1.34 in],max. 1.5 mm [0.06 in] deep

7/8-14 UNF O-ring boss
16.7 mm [0.66 in] deepx = 34 mm [1.34 in],max. 1.5 mm [0.06 in] deep

T, L, R

G 3/8 w. spot face
12 mm [0.47 in] deepy = 34 mm [1.34 in],max. 1.5 mm [0.06 in] deepOr
M18 x 1.5 ISO 6149,
15 mm [0.59 in] deepy = 29 mm [1.14 in],max. 1.5 mm [0.06 in] deep

9/16 - 18 UNF O-ring boss
12.7 mm [0.50 in] deepy = 25 mm [0.98 in],max. 1.5 mm [0.06 in] deep

BC444069075966en-000101

Technical Information
OLS Priority Valves
Dimensions
OLSi 80 dimensions

X

Y

84

41
2.7

8.5±0.2

Z

83

MADE IN DENMARKXXXXXXXX51

PRIORITY VALVE

OLSi 80

1540

XXXXXXXX

21.5

19

19
38

41.5

X
Ø38

Dimensions and port depths© Danfoss | May 2023

Dimension/port

Metric units

Imperial unitsP, EF

G 1/2 w. spot face
15 mm [0.59 in] deepOr
M22 x 1.5 ISO 6149-1
15 mm [0.59 in] deep,
x = min. 34 mm [1.34 in],max. 1.55 mm [0.06 in] deepP, EF:
7/8 - 14 UNF O-ring boss
15 mm [0.59 in] deep
x = min. 34 mm [1.34 in],max. 1.55 mm [0.06 in] deepCF

G 1/2 w. spot face
14 mm [0.55 in]deepOr
M18 x 1,5 ISO 6149-1
12 mm [0.47 in] deep,y = min. 30 mm [1.18 in],max. 1.3 mm [0.54 in] deep

3/4-16 UNF O-ring boss
14.3 mm [0.56 in] deepy = min. 30 mm [1.18 in],max. 1.3 mm [0.05 in] deepLS

G 1/4 w. spot face
12.5 mm [0.49 in] deepOr
M12 x 1,5 ISO 6149-1
12,5 mm [0.49 in] deep,z = min. 25 mm [0.98 in]max. 0.7 mm [0.03 in] deepLS:
7/16-20 UNF O-ring boss
12.5 mm [0.49 in] deepz = min. 25 mm [0.98 in],max. 0.7 mm [0.03 in] deep

BC444069075966en-000101 | 25

Technical Information
OLS Priority Valves
Dimensions
OLS 120 dimensions

XX

24 [0.94]

Ø9.1 [0.358]
Ø8.7 [0.343]

56 [2.20]

Z

PP

LS

P

66 [2.60]
80 [3.15]

96 [3.78]

53 [2.09]

CFEFØ9.1 [0.358]
Ø8.7 [0.343]

Z
10 [0.39]
38.4 [1.512]

18.7 [0.736]

114 [4.49]
140 [5.51]

Y
152B173.11

Dimensions and port depth

26 | © Danfoss | May 2023

Dimension/port

Metric units

Imperial unitsP, EF

G 3/4 w. spot facex = 42 mm [1.65 in],max. 2.5 mm [0.10 in] deepOr
M27 x 2 ISO 6149
x = 40 mm [1.57 in],max. 2.5 mm [0.10 in] deep

1 1/16 - 12 UN O-ring boss
x = 41mm [1.61 in],max. 1.5 mm [0.06 in] deepCF

G 1/2 w. spot facey = 34 mm [1.34 in],max. 2.5 mm [0.10 in] deepOr
M18 x 1.5 ISO 6149
y = 29 mm [1.14 in],max. 2.5 mm [0.10 in] deep

3/4 - 16 UNF O-ring boss
y = 30 mm [1.18 in],max. 1.5 mm [0.06 in] deepLS, PP

G 1/4 w. spot face
12 mm [0.47 in] deepz = 19 mm [0.75 in]
0 mm deepOr
M12 x 1,5 ISO 6149
11,5 mm [0.45 in] deep,z = 19 mm [0.75 in]
0 mm deep

7/16 - 20 UNF O-ring boss
11.5 mm [0.45 in] deepz = 19 mm [0.75 in] 0 mm deep

BC444069075966en-000101

Technical Information
OLS Priority Valves
Dimensions
OLS 160 dimensions

YX

178 [7.01]
33 [1.26]
25 [0.98]

U

35 [1.38]

63 [2.48]
130 [5.12]

ø8.9 ± 0.2 [ø0.35 ± 0.01]

ø8.9 ± 0.2 [ø0.35 ± 0.01]

32 [1.26]

32 [1.26]
124 [4.88]
61.3 [2.41]

75 [2.95]

Z

33 [1.30]
66 [2.60]

X

Dimensions and port depth© Danfoss | May 2023

Dimension/port

Metric units

Imperial unitsP, EF

G 3/4 w. spot facex = 42 mm [1.65 in],max. 2.5 mm [0.10 in] deepOr
G 1 w. spot facex = 47 mm [1.85 in],max 2.5 mm [0.10 in] deep

1 1/16-12 UNF O-ring boss
x = 41 mm [1.61 in],max. 2.5 mm [0.10 in] deepOr
1 5/16 - 12 UNF O-ring boss
x = 49 mm [1.93 in],max. 2.5 mm [0.10 in] deepCF

G 1/2 w. spot facey = 34 mm [1.34 in],max. 2.5 mm [0.10 in] deepOr
G 3/4 w. spot facey = 38 mm [1.50 in],max. 2.5 mm [0.10 in] deep

3/4-16 UNF O-ring boss
y = 32 mm [1.26 in],max. 2.5 mm [0.10 in] deep
7/8 - 14 UNF O-ring boss
y = 30 mm [1.18 in],max. 2.5 mm [0.10 in] deepLS, PP, T

G 1/4 w. spot face
12 mm [0.47 in] deepz = 22.8 mm [0.89 in],max. 1 mm [0.04 in] deepu = 25 mm [0.98 in]max. 1.5 mm [0.06 in] deep

7/16 - 20 UNF O-ring boss
11.5 mm [0.45 in] deepz = 22,8 mm [0.89 in],max. 1.5 mm [0.06 in] deepu = 21 mm [0.83 in],max. 1.6 mm [0.06 in] deep

BC444069075966en-000101 | 27

Technical Information
OLS Priority Valves
Dimensions
OLS 320 dimensions
236 [9.29]
33 [1.30]

47.5 [1.870]

47.5 [1.870]

3xØ20 [0.79]

5 [0.20]48 [1.89]

4 [0.16]

7 [0.28]

59 [2.32]

2xØ16 [0.63]

3xØ8.5 [0.335]

Y
63.5 [2.500]

14 [0.55]

EF

LS

PP

78 [3.07]

T

22.5 [0.886]

47.5 [1.870]

117.5 [4.626]

PZ

52.5 [2.067]

CFX

47 [1.85]

X

80 [3.15]

150H26.10

Dimensions and port depth

28 | © Danfoss | May 2023

Dimensions/port

Metric units

Imperial unitsP, EF

G 1 w. spot facex = ø47 mm [1.85 in]max 1 mm [0.04 in] deep

1 5/16-12 UN O-ring boss
x = ø49 mm [1.93 in]max 0.2 mm [0.01 in] deepCF

G 1/2 w. spot facey = ø34 mm [1.34 in]max 2.5 mm [0.10 in] deep

1 1/16-12 UN O-ring bossy = ø41 mm [1.61 in]
max 0.2 mm [0.01 in] deepOr
3/4-16UNF O-ring bossy = ø30 mm [1.18 in]
max 0.2 mm [0.01 in] deepLS, PP

G 1/4 w. spot face

7/16-20 UNF O-ring boss

T

G 1/4 w. spot facez = ø25 mm [0.98 in]
max 1.5 mm [0.06 in] deep

7/16-20 UNF O-ring boss

BC444069075966en-000101

Technical Information
OLS Priority Valves
Dimensions
OLSP 80 dimensions

31.2 [1.228]

38 [1.50]

43.5 [1.713]

Ø24.4 [0.961]
1.88 [0.74] deep

24.7 [0.972]

24.7 [0.972]

33 [1.30]

84 [3.31]

X

32 [1.26]

19.5 [0.768]

Y

38 [1.50]

CF33 [1.30]

91 [3.58]

Ø6.5 [0.26]

Ø11 [0.04]

25 [0.98]

LSEF
24 [0.94]

20 [0.89]
52 [2.05]

152-180.11

Dimensions and port depth© Danfoss | May 2023

Dimension/port

Metric units

Imperial unitsCF

G 3/8 w. spot face
15 mm [0.59 in] deepx = ø28, max. 1.5 mm [0.06 in] deep or M18 •1.5 ISO 6149
15 mm [0.59 in] deepy = ø29, max. 1.5 mm [0.06 in]

3/4-16 UNF O-ring boss
15 mm [0.59 in] deepx = ø29 [1.14 in]max. 1.5 mm [0.06 in] deepEF

G 1/2 w. spot face
15 mm [0.59 in] deepy = ø34, max. 1.5 mm [0.06 in] or M22 • 1.5
ISO 6149 15 mm [0.59 in] deepx = ø34, max. 1.5 mm [0.06 in]

7/8 - 14 UNF O-ring boss
16.7 mm [0.66 in] deepy = ø34 [1.34 in]max. 1.5 mm [0.06 in] deepLS

G 1/4 w. spot face
12.5 mm [0.49 in] deep or M12 • 1.5 ISO 6149
12.5 mm [0.49 in] deep

7/16 - 20 UNF O-ring boss
12.5 mm [0.49 in] deep

BC444069075966en-000101 | 29

Technical Information
OLS Priority Valves
Code numbers

OLSA static priority valves for OSPC/OSPD load sensing static steering units
OLSA 40 static and OLSA 80 static
Priority valve

Metric connections
T,R,L: G 3/8
P, EF: G 1/2

Imperial connections
T, R, L: 9/16 - 18 UNF
P, EF: 7/8 - 14 UNF

Control springpressurebar [psi]

OLSA 40

152B0001-

4 [58]OLSA 40

152B0002

152B0122

7 [101.5]

OLSA 40

152B0003

152B0124

10 [145]OLSA 80152B0016

152B0019

4 [58]OLSA 80152B0017

152B0020

7 [101.5]

OLSA80

152B0015

152B0125

10 [145]

OLS static priority valves for OSPB/OSPC/OSPD/OSPL LS static steering units
OLSi 80 static code numbers, black painted
Priority valve

Metric connections
LS: G 1/4
P, EF, CF: G 1/2

Imperial connections
LS: 7/16 - 20 UNF
CF: 3/4 -16 UNF
P, EF: 7/8 - 14 UNF

Control springpressurebar [psi]

OLSi 8011293538

11293532

4 [58]

OLSi 8011293539

11293533

7 [101.5]

OLSi 8011293540

11293534

10 [145]

OLS 120 static code numbers
Priority valve

Metric connections
LS: G 1/4
CF: G 1/2
P, EF: G 3/4

Imperial connections
LS: 7/16 -20 UNF
CF: 3/4 - 16 UNF
P, EF: 1 1/16 - 12 UNF

Control springpressurebar [psi]

OLS 120152B2232

152B2238

7 [101.5]

OLS 120152B2233

152B2239

10 [145]

OLS 160 static code numbers
Priority valve

Metric connections
LS, PP, T: G 1/4
CF: G 1/2
P, EF: G 3/4

Imperial connections
LS, PP, T: 7/16 -20 UNF
CF: 3/4 - 16 UNF
P, EF: 1 1/16 - 12 UNF

Control springpressurebar [psi]

Pilot pressure
relief valve
bar [psi]

OLS 160

152B1005

152B1085

7 [101.5]

170 [2465]

OLS 160

152B1006

152B1086

10 [145]

170 [2465]

OLSP 80 static code numbers

30 | © Danfoss | May 2023

Priority valve

Metric connections
LS: G 1/4
CF: G 3/8
EF: G 1/2

Control spring pressure
bar [psi]

OLSP 80 static

152B5002

4 [58]

BC444069075966en-000101

Technical Information
OLS Priority Valves
Code numbers
OLSA dynamic priority valves for OSPC/OSPD LS dynamic steering units
OLSA 40 dynamic and OLSA 80 dynamic code numbers
Priority valve

Metric connections
T, R, L: G 3/8
P, EF: G 1/2

Imperial connections
T, R, L: 9/16 - 18 UNF
P, EF: 7/8 - 14 UNF

Control springpressurebar [psi]

OLSA 40

152B8001-

4 [58]OLSA 40

152B8041

152B8042

7 [101.5]

OLSA 40

152B8046

152B8043

10 [145]OLSA 80152B8047-

4 [58]OLSA 80152B8048

152B8044

7 [101.5]

OLSA 80152B8049

152B8045

10 [145]

OLS dynamic priority valves for OSPB/OSPC/OSPD/OSPL LS dynamic steering units
OLSi 80 dynamic code numbers, black painted
Priority valve

Metric connections
LS: G 1/4
P, EF, CF" G 1/2

Imperial connections
LS: 7/16 - 20 UNF
CF: 3/4 - 16 UNF
P, EF: 7/8 - 14 UNF

Control springpressurebar [psi]

OLSi 8011293549-

4 [58]

OLSi 8011293545

11293656

7 [101.5]

OLSi 8011293546

11293537

10 [145]

OLS 120 dynamic code numbers
Priority valve

Metric connections
LS: G 1/4
CF: G 1/2
P, EF: G 3/4

Imperial connections
LS: 7/16 -20 UNF
CF: ¾ - 16 UNF
P, EF: 1 1/16 - 12 UNF

Control springpressurebar [psi]

OLS 120152B8132

152B8143

7 [101.5]

OLS 120152B8133

152B8144

10 [145]

OLS 160 dynamic code numbers
Priority valve

Metric connections
LS, T: G 1/4
CF: G 1/2
P, EF: G 3/4

Imperial connections
LS, T: 1/16 -20 UNF
CF: 3/4 - 16 UNF
P, EF: 1 1/16 - 12 UNF

Control springpressurebar [psi]

Pilot pressure
relief valve
bar [psi]

OLS 160

152B8159

152B8154

7 [101.5]

170 [2465]

OLS 160

152B8160

152B8155

10 [145]

170 [2465]

OLS 160

152B8105-

12 [174]

170 [2465]

OLS 160

152B8161

152B8156

7 [101.5]

210 [3045]

OLS 160

152B8162

152B8157

10 [145]

210 [3045]

OLSP 80 dynamic code numbers© Danfoss | May 2023

Priority valve

Metric connections
LS: G 1/4
CF: G 3/8
EF: G 1/2

Control spring pressure
bar [psi]

OLSP 80152B5200

7 [101.5]

BC444069075966en-000101 | 31

Technical Information
OLS Priority Valves
Code numbers
OLS high dynamic for OSPC/OSPD high dynamic, OSPF/OSPDF/OSPU LS dynamic steering units
OLSi 80 dynamic code numbers, black painted
Priority valve

Metric connections
LS: G 1/4
P, EF, CF: G 1/2

Control spring pressure
bar [psi]

OLSi 8011293547

7 [101.5]

OLSi 8011293541

10 [145]

OLS 320 dynamic in-line/stand alone with pilot pressure relief valve, black painted
Priority valve

Metric connections
LS, T: G¼
CF: G ½
P, EF: G 1

Control springpressurebar [psi]

Pilot pressure relief
valve
bar [psi]

OLS 32011006593

7 [101.5]

170 [2465]

OLS 320 dynamic in-line/stand alone without pilot pressure relief valve, black painted
Priority valve

Imperial connections
LS: 7/16 - 20 UNF
CF: 11/16 - 12 UN
P, EF: 15/16 - 12 UN

Control spring pressure
bar [psi]

OLS 32011007475

10 [145]

OLS 320 for EHPS: look in EHPS Steering Valve with PVE Electrical Actuation Module and OSPCX CN Steering
Wheel Technical Information, BC152886484652
OLSP 80 dynamic code numbers

32 | © Danfoss | May 2023

Priority valve

Metric connections
LS: G¼
CF: G 3/8
EF: G ½

Control spring pressure
bar [psi]

OLSP 80152B5201

7 [101.5]

BC444069075966en-000101

Technical Information
OLS Priority Valves
Variants and ordering specifications

Priority valves master model code
If the needed priority valve is not included in the list of code numbers in previous section, please
determine Master Model Code (MMC). Fill in the codes to specify your OLS priority valve.
Only use MMC values, which are represented for the given type of OLS.
The relevant MMC variants are listed on the next few pages.
All ports on a given OLS must be based on one and same port standard.
The example below details the model code for OLSi 80, code number 11293545.
MMC position

Example

1

2

3

4

5

6

7

Type

Size

P Port Size

CF Port Size

EF Port Size

L&R
Port Size

LS Port Size

OLSi

080

G

G

G

N

A

8

9

10

11

12

13

14

PP Port Size

T Port Size

Port Interface

PRV, barSpring, bar

PP Internal SizeØmm

PP External Size
Ømm

N

N

E

NNN

07

C

N

Your OLS
MMC position

ExampleYour OLS
MMC position
Example

15

16

18

19

20

LS Size Ømm

Dynamic Size Ømm Spool, comments

17

Special

Label

Paint

C

B

NN

DNFS

NN

S52

Your OLS

Variants codes for OLS MMC

Priority valve type and size
Priority valve type
MMC position 1

Description

OLSA

Priority valve for flanging on OSPC and OSPD LS steering units

OLSi

Priority valve for in-line use (OLSi 80)

OLS#

Priority valve for in-line use (OLS 120/OLS 160/OLS 320)

OLSP

Priority valve for flanging on gear pump with P-outlet square type 35

Size, max P-flow, l/min
MMC position 2

Size, max P-flow, L/min

040

40 (OLSA 40)

080

80 (OLSA 80/OLSi 80/OLSP 80)

120

120 (OLS 120)160

160 (OLS 160)320

320 (OLS 320)

© Danfoss | May 2023

BC444069075966en-000101 | 33

Technical Information
OLS Priority Valves
Variants and ordering specifications
P, CF, EF, L & R ports
P port size
MMC position 3

Description

M

M18x1.5 (DIN 3852-1) (OLSA 40/OLSA 80)

B

M22x1.5 (ISO 6149-1) (OLSA 40/OLSA 80/OLSi 80)

B

M22x1.5 (DIN 3852-1) (OLSi80)

C

M27x2 (ISO 6149-1 or DIN 3852-1) (OLS 120/OLS 160 w. PRV)D

M33x2 (ISO 6149-1) (OLS 320 for EHPS)

E

7/8"-14 UNF (ISO 11926-1) (OLSA 40/OLSA 80/OLSi 80)

Z

1 1/16"-12 UN (ISO 11926-1) (OLS 120/OLS 160)

H

1 5/16"-12 UN (ISO 11926-1) (OLS 160/OLS 320)G

G1/2" (DIN 3852-2) (OLSA 40/OLSA 80/OLSi 80)

L

G3/4" (DIN 3852-2) (OLS 120/OLS 160)

N

G1" (DIN 3852-2) (OLS 160/OLS 320)

J

1" SAE flange (OLS 320 for EHPS)R

For gear pump with P-outlet square type 35 (OLSP 80)

CF port size
MMC position 4

Description

M

M18x1.5 (ISO 6149-1) (OLSi 80/OLS 120)

M

M18x1.5 (DIN 3852-1) (OLSi 80/OLS 120/OLSP 80)

B

M22x1.5 (ISO 6149-1 or DIN 3852-1) (OLS 160 w. PRV)

S

9/16"-18 UNF (ISO 11926-1) (OLSi 80)

U3/4"-16 UNF (ISO 11926-1) (OLSi 80/OLS 120/OLS 160/OLSP 80)

E7/8"-14 UNF (ISO 11926-1) ( OLS 160)

Z

1 1/16"-12 UN (ISO 11926-1) ( OLS 320)

V

G3/8" (DIN 3852-2) (OLSP 80)

G

G1/2" (DIN 3852-2) (OLSi 80/OLS 120/OLS 160/OLS 320)L

G3/4" (DIN 3852-2) (OLS 160 w. PRV)

T

Flange (OLSA for OSP and OLS 320 for EHPS)

EF port size
MMC position 5

Description

M

M18x1.5 (DIN 3852-1) (OLSA 40/OLSA 80/OLSP 80)

B

M22x1.5 (ISO 6149-1) (OLSA 40/OLSA 80/OLSi 80)

B

M22x1.5 (DIN 3852-1) (OLSi 80)

C

M27x2 (ISO 6149-1 or DIN 3852-1) (OLS 120/OLS 160 w. PRV)D

M33x2 (ISO 6149-1) (OLS 320 for EHPS)

E

7/8"-14 UNF (ISO 11926-1) (OLSA 40/OLSA 80/OLSi 80/OLSP 80)

Z

1 1/16"-12 UN (ISO 11926-1) (OLS 120/OLS 160)

H

1 5/16"-12 UN (ISO 11926-1) (OLS 160/OLS 320)G

G1/2" (DIN 3852-2) (OLSA 40/OLSA 80/OLSi 80/OLSP 80)

L

G3/4" (DIN 3852-2) (OLS 120/OLS 160)

N

G1" (DIN 3852-2) (OLS 160/OLS 320)

J

1" SAE flange (OLS 320 for EHPS)

34 | © Danfoss | May 2023

BC444069075966en-000101

Technical Information
OLS Priority Valves
Variants and ordering specifications
L and R ports
MMC position 6

DescriptionN

No L/R ports (OLS 40/OLS 80/OLS 120/OLS 160/OLS 320/OLSP 80)

M

M18x1.5 (DIN 3852-1) (OLSA 40/OLSA 80 w. P-port M18x1.5)

M

M18x1.5 ( ISO 6149-1) (OLSA 40/OLSA 80 w. P-port M22x1.5)

S

9/16"-18 UNF (ISO 11926-1) (OLSA 40/OLSA 80)

V

G3/8" (DIN 3852-2) (OLSA 40/OLSA 80)

G

G1/2" (DIN 3852-2) (OLSA 40/OLSA 80)

LS, PP, T ports
LS port size
MMC position 7

DescriptionE

M12x1.5 (ISO 6149-1) (OLSi 80/OLS 120/OLS 160 w. PRV/OLS 320)E

M12x1.5 (DIN 3852-1) (OLSi 80/OLS 120/OLS 160 w. PRV/OLSP 80)

B7/16”-20 UNF (ISO 11926-1) (OLSi 80/OLS 120/OLS 160/OLS 320/OLSP 80)

A

G1/4" (DIN 3852-2) (OLSi 80/OLS 120/OLS 160/OLS 320/OLSP 80)

N

Blind plug (OLSA 40/OLSA 80)

PP port size
MMC position 8

DescriptionN

No external PP port (All versions)E

M12x1.5 (DIN 3852-1) (OLSi 80)

B

7/16”-20 UNF (ISO 11926-1) (OLS 160)

A

G1/4" (DIN 3852-2) (OLSi 80/OLS 160)

T port size
MMC position 9

DescriptionE

M12x1.5 (ISO 6149-1) (OLS 160 and OLS 320 w. PRV)E

M12x1.5 (DIN 3852-1) (OLS 160 w. PRV)

B

7/16”-20 UNF (ISO 11926-1) (OLS 160 and OLS 320 w. PRV)A

G1/4" (DIN 3852-2) (OLS 160 and OLS 320 w. PRV)V

G3/8" (DIN 3852-2) (OLSA 40/OLSA 80)

G

G1/2" (DIN 3852-2) (OLSA 40/OLSA 80)

Port interface, PRV setting, spring setting
Port interface
MMC position 10

DescriptionN

O-ring boss - Spot-face (ISO 6149-1 - Metric)C

O-ring boss (ISO 11926-1 - UNF)

D

Spot-face (DIN 3852-1 - Metric)E

Spot-face (DIN 3852-2 - G)

© Danfoss | May 2023

BC444069075966en-000101 | 35

Technical Information
OLS Priority Valves
Variants and ordering specifications
Pilot relief valve (PRV) setting
MMC position 11

Description

NNN

No PRV (All versions)

175

Value for setting (175 bar), P-T. (OLS 160/OLS 320)
Range OLS 160: 130 - 210 bar. Range OLS 320: 130 - 250 bar. Interval: 5 bar

Spring, bar
MMC position 12

Description

04

4 bar (OLSA 40/OLSA 80/OLSi 80/OLS 120/OLS 160/OLSP 80)

05

5.5 bar (OLSA 40/OLSA 80)

07

7 bar (All versions)10

10 bar (All versions)

12

12 bar (OLS 160)

16

16 bar (OLS 320)

PP (internal/external), LS, dynamic orifice
PP internal size, Ømm
MMC position 13

DescriptionN

No Internal PP (OLSi 80/OLS 160). External PP will be neededAØ0.6 mm (OLSA 40/OLSA 80/OLSi 80/OLS 120/OLS 320/OLSP 80)

BØ0.7 mm (OLSA 40/OLSA 80/OLSi 80/OLS 320)C

Ø0.8 mm ( All versions )DØ0.9 mm (OLSA 40/OLSA 80/OLSi 80/OLS 120/OLS 320/OLSP 80)

EØ1.0 mm (OLSA 40/OLSA 80/OLSi 80/OLS 120/OLS 320/OLSP 80)

FØ1.1 mm (OLSA 40/OLSA 80/OLSi 80/OLS 320)G

Ø1.2 mm (All versions)HØ1.5 mm ( OLS 120 )J

Thread bore, without PP orifices assembled to the priority valve spool(OLSA 40/OLSA 80/OLSi 80/OLS 120/OLS 320/OLSP 80)

PP external size, Ømm
MMC position 14

DescriptionN

No External PP (All versions)CØ0.8 mm (OLSi 80 w. DIN 3852-1 – Metric and DIN 3852-2 - G)D

Ø0.9 mm ( OLS 160 w. DIN 3852-2 – G and ISO 11926-1 - UNF)

E

Ø1.0 mm ( OLSi 80 w. DIN 3852-1 – Metric )G

Ø1.2 mm ( OLSi 80 w. DIN 3852-1 – Metric )LS size, Ømm
MMC position 15

DescriptionAØ0.6 mm (OLSA 40/OLSA 80/
OLS 120 w. DIN 3852-2 – G/
OLS 320 w. ISO 11926-1 - UNF or w. DIN 3852-2 – G /OLSP 80)

BØ0.7 mm (OLSi 80)

36 | © Danfoss | May 2023

BC444069075966en-000101

Technical Information
OLS Priority Valves
Variants and ordering specifications
LS size, Ømm (continued)
MMC position 15

DescriptionCØ0.8 mm (OLSA 40/OLSA 80/OLSi 80/OLS 120/
OLS 320 w. ISO 11926-1 - UNF or w. DIN 3852-2 – G /OLSP 80)

DØ0.9 mm (OLSA 40/OLSA 80/OLSi 80/
OLS 160 w. DIN 3852-1 – Metric, DIN 3852-2 – G or w. ISO 11926-1 - UNF /OLS 320 w. ISO 11926-1 - UNF or w. DIN 3852-2 – G /OLSP 80)

EØ1.0 mm (OLSA 40/OLSA 80/
OLSi 80/
OLS 120 w. DIN 3852-2 – G or w. ISO 11926-1 – UNF/
OLS 160 w. ISO 6149-1 – Metric, DIN 3852-2 – G or w. ISO 11926-1 – UNF/
OLS 320/OLSP 80)

FØ1.1 mm (OLSi 80)

GØ1.2 mm ( OLSA 40/OLSA 80/
OLSi 80/
OLS 120 w. ISO 6149-1 – Metric or DIN 3852-2 – G/
OLS 160 w. DIN 3852-2 – G/
OLS 320 w. ISO 11926-1 - UNF or w. DIN 3852-2 – G /OLSP 80)

IØ2.0 mm (OLS 160 w. DIN 3852-2 – G )Dynamic orifice size, Ømm
MMC position 16

DescriptionN

No dynamic orifice: Static versionsAØ0.6 mm (OLSA 40/OLSi 80/OLS 120/OLS 160/OLS 320/OLSP 80)

BØ0.7 mm (OLSA 80/OLSi 80/OLS 120/OLS 160/OLSP 80)

CØ0.8 mm (OLSA 40/OLSi 80/OLS 120/OLS 160/OLS 320/OLSP 80)

DØ0.9 mm (All dynamic versions)EØ1.0 mm ( OLSA 80/OLSi 80/OLS 120/OLS 160/OLS 320/OLSP 80)

FØ1.1 mm (OLSi 80/OLS 120/OLS 160/OLSP 80)

GØ1.2 mm (OLSi 80/OLSP 80/OLS 120/OLS 160)

Spool
Spool
MMC position 17

Description

S01

OLSA 40 Static, M6 for Int. PP

S02

OLSA 40 Static, for Ext. PP

S03

OLSA 40 Dynamic Ø0.6mm, M6 for Int. PP. Standard

S04

OLSA 40 Dynamic Ø0.6mm, M6 for Int. PP. Low noise for low

S05

OLSA 40 Dynamic Ø0.8mm, M6 for Int. PP. Low noise for low

S06

OLSA 40 Dynamic Ø0.8mm, M6 for Int. PP. Low-low noise for

S07

OLSA 40 Dynamic Ø0.9mm, M6 for Int. PP. Standard

S08

OLSA 40 Dynamic Ø0.9mm, M6 for Int. PP. Low noise for low

S11

OLSA 80 Static, M6 for Int. PP

S12

OLSA 80 Static, for Ext. PP

S13

OLSA 80 Dynamic Ø0.7mm, M6 for Int. PP. Standard

S14

OLSA 80 Dynamic Ø0.7mm, M6 for Int. PP. Reduced pressure drop P-EF

S15

OLSA 80 Dynamic Ø0.9mm, M6 for Int. PP. Standard© Danfoss | May 2023

BC444069075966en-000101 | 37

Technical Information
OLS Priority Valves
Variants and ordering specifications
Spool (continued)
MMC position 17

Description

S16

OLSA 80 Dynamic Ø0.9mm, M6 for Int. PP. Low noise for low EF load

S17

OLSA 80 Dynamic Ø0.9mm, M6 for Int. PP. Low-low noise for low EF load

S18

OLSA 80 Dynamic Ø1.0mm, M6 for Int. PP. Standard

S21

OLS 120 Static, Int. PP Ø0.8mm

S22

OLS 120 M6 for Dynamic, Int. PP Ø0.8mm

S23

OLS 120 M6 for Dynamic, Int. PP Ø0.7mm

S24

OLS 120 M6 for Dynamic, Int. PP Ø1.5mm

S25

OLS 120 M6 for Dynamic, M4 for Int. PP. Low noise

S31

OLS 160 Static, Int. PP Ø0.8mm

S32

OLS 160 Static, for Ext. PP

S33

OLS 160 M6 for Dynamic, Int. PP Ø0.8mm

S34

OLS 160 M6 for Dynamic, Int. PP Ø1.2mm

S41

OLS 320 Static, M6 for Int. PP. For use with EHPS: CF edge inside EHPS

S42

OLS 320 M4 for Dynamic, M6 for Int. PP

S51

OLSP 80 Static, M4 for Int. PP

S52

OLSi 80/OLSP 80 M6 for Dynamic, M4 for Int. PP

S53

OLSi 80/OLSP 80 M6 for Dynamic, M4 for Int. PP. For low pump flow

Special features, label, paintSpecial feature
MMC position 18

Description

NN

Not ApplicableXX

Special feature

Label
MMC position 19

Description

DNFS

Danfoss name tag

XXXXSpecial LabelPaint
MMC position 20

Description

NN

No Paint

PB

Black, Powder, RAL 9005, Corrosion class C3

38 | © Danfoss | May 2023

BC444069075966en-000101

Products we offer:

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Cartridge valves
DCV directional control
valvesElectric converters
Electric machines

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© Danfoss | May 2023

BC444069075966en-000101