AB 11 EN
SAMSON's modular design concept
Function blocks for valve accessories with NAMUR interface

Application
This document provides an overview of SAMSON's modular function blocks for valve accessories with a NAMUR interface.
Such function blocks include adapter plates, double-axial adapters and restrictor plates as well as special constructions.

SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 · samson@samsongroup.com · www.samsongroup.com

Edition February 2022

Contents
1
1.1
1.1.1
1.1.2
1.1.3
1.2
1.3

General · Functions and scope of application......................................................................................................... 3
NAMUR interface according to VDI/VDE 3845 and VDI/VDE 3847........................................................................ 4
NAMUR interface according to VDI/VDE 3845....................................................................................................... 4
Extended NAMUR interface according to VDI/VDE 3847........................................................................................ 4
Port labeling......................................................................................................................................................... 5
Materials.............................................................................................................................................................. 5
Threaded connections............................................................................................................................................ 5

2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13

Adapter plates..................................................................................................................................................... 6
Distance plate with extended NAMUR interface ¼“................................................................................................. 6
Distance plate with NAMUR interface ½“................................................................................................................ 8
Sealing plate with extended NAMUR interface ¼“................................................................................................. 10
Adapter plate for NAMUR interface ¼“ on NAMUR interface ½“........................................................................... 12
Adapter plate for NAMUR interface ½“ on NAMUR interface ¼“........................................................................... 14
Adapter plate for extended NAMUR interface ¼“ with external threaded connections.............................................. 16
Adapter plate for NAMUR interface ½“ on threaded connection ½“....................................................................... 18
Adapter plate with extended NAMUR interface ¼“ on NAMUR rib......................................................................... 20
Adapter plate with NAMUR interface ¼“ on NAMUR rib....................................................................................... 22
Adapter plate with NAMUR interface ½“ on NAMUR rib....................................................................................... 24
Adapter plate with NAMUR interface ½“ on NAMUR rib with additional connections.............................................. 26
Adapter plate with extended NAMUR interface ¼“ for SAMSON Types 3353 and 3354 Valves............................... 28
Adapter plate with extended NAMUR interface ¼“ for SAMSON Type 3351 On/off Valve...................................... 30

3
3.1
3.2
3.3

Double-axial adapters........................................................................................................................................ 32
Double-axial adapter 180° with extended NAMUR interface ¼“............................................................................ 32
Double-axial adapter 90° with NAMUR interface ½“............................................................................................ 34
Double-axial adapter 90° with NAMUR interface ½” with additional threaded connections...................................... 36

4
4.1
4.2
4.3
4.4
4.5
4.6

Restrictor plates.................................................................................................................................................. 38
Fine exhaust air restrictor for extended NAMUR interface ¼“................................................................................. 38
Fine supply air restrictor of extended NAMUR interface ¼“.................................................................................... 40
Exhaust air restrictor for extended NAMUR interface ¼“........................................................................................ 42
Supply air restrictor of extended NAMUR interface ¼“.......................................................................................... 44
Double exhaust air restrictor with extended NAMUR interface ¼“........................................................................... 46
Universal restrictor with extended NAMUR interface ¼“......................................................................................... 48

5
5.1
5.2
5.3
5.4
5.5
5.6
5.7

Special constructions.......................................................................................................................................... 50
Emergency supply · NAMUR interface ¼“, integrated parallel connection – 2oo2.................................................... 50
Emergency venting · NAMUR interface ¼“, integrated series connection – 1oo2...................................................... 52
Emergency venting · Extended NAMUR interface ¼“, integrated series connection – 1oo2........................................ 54
Emergency supply · NAMUR interface ½“, integrated parallel connection through booster valve – 2oo2.................... 56
Emergency venting · NAMUR interface ½“, integrated series connection through booster valve – 1oo2...................... 58
Adapter plate for four NAMUR interfaces ¼“ on threaded connection ¼“............................................................... 60
Adapter plate (closed-circuit principle).................................................................................................................. 622

AB 11 EN

1 General · Functions and scope of application
The modular design allows SAMSON solenoid valves to be easily adapted to various applications. As a common pneumatic interface, the NAMUR interface according to VDI/VDE 3845 is used for thread sizes ¼“ and ½“, while the extended NAMUR interface
according to VDI/VDE 3847 can also be used for thread size ¼“.
The standardized interface allows the modular parts to be combined with each other as required.

Fig. 1: SAMSON's modular design concept for solenoid valves

AB 11 EN3

1.1 NAMUR interface according to VDI/VDE 3845 and VDI/VDE 3847
1.1.1

NAMUR interface according to VDI/VDE 3845

The NAMUR interface is a standardized interface for attachment. The interface includes two 'Supply (actuator)' air ducts (port 2)
or 'Exhaust (actuator)' air ducts (port 3) as well as four tapped holes for mounting (see Fig. 2). The supply (port 1) and any pilot
supply required (port 9) must be routed or hooked up separately.

1

3

3

D2

3

3

2
1
2
3

D1

'Supply (actuator)' air duct
'Exhaust (actuator)' air duct
M5 holes for mounting/Hole for coded screw

Fig. 2: NAMUR interface according to VDI/VDE 3845

The NAMUR interface according to VDI/VDE 3845 is available in ¼“ and ½“ sizes (sizes relating to the air ducts). The M5 (¼“)
and M6 (½“) holes for mounting are additionally used to mount a coded screw, which prescribes the mounting position of the solenoid valve. Refer to VDI/VDE 3845 for a precise description of the pneumatic interface.

1.1.2

Extended NAMUR interface according to VDI/VDE 3847

In contrast to the VDI/VDE 3845, the NAMUR interface according to VDI/VDE 3847 has additional air ducts for supply (port 1)
and the external pilot supply (port 9). See Fig. 3.

1

5

6

5

4

24

3

2

32

1
2
3
4
5
6

'Supply (actuator)' air duct
'Exhaust (actuator)' air duct
'Supply air' air duct
'External pilot supply' air duct
M5 holes for mounting
Hole for coded screw

Fig. 3: Extended NAMUR interface according to VDI/VDE 3847

The extended NAMUR interface provides all pneumatic connections required in one interface. It allows solenoid valves to be directly mounted on actuators/components without an additional connection of the supply or external pilot supply. The mounted
coded screw prescribes the installation direction of the solenoid valve. It ensures that the additional air ducts (1 and 9) are always
in the correct position. The NAMUR interface according to VDI/VDE 3847 is available in ¼“ size (size relating to the air ducts for
supply and exhaust of the actuator).
The extended NAMUR interface according to VDI/VDE 3847 is compatible with the NAMUR interface according to VDI/
VDE 3845 provided the ports 1 and 9 are sealed air-tight. In this case, the supply and external pilot supply (if required) must be
routed separately again.
Two M5 holes are used for mounting. Refer to VDI/VDE 3847 for a precise description of the pneumatic interface.

4

AB 11 EN1.1.3

Port labelingIf not specified otherwise, the port labeling of the (extended) NAMUR interface is as follows:
Port

Function1

Supply air

2

Actuator (supply)3

Actuator (exhaust)

9

External pilot supply

1.2 Materials
If not specified otherwise, the specifications used describe the following materials:
Specification

Material designation and surface finish

Aluminum

EN AW-6082-T6/DIN EN 754-2 · Powder coated

Stainless steel

1.4404/DIN EN 10088-3 · No surface finish

1.3 Threaded connections
Components with a thread are marked correspondingly. Both Whitworth pipe threads (G) or threads according to national pipe
thread standards (NPT) are available:
Specification

Thread standard

G

Whitworth pipe thread – ISO 228

NPT

National Pipe Thread – ASME/ANSI B1.20.1

Note
Thread diameter specifications are stated in inches.

AB 11 EN5

2 Adapter plates
The SAMSON modular adapter plates are mounted between the actuator and pilot valve. They are suitable for adapting the (extended) NAMUR interface of the pilot valve to the installation conditions, a different actuator interface or various types of attachment.

2.1 Distance plate with extended NAMUR interface ¼“
Distance plate made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3845 or VDI/
VDE 3847 on actuators with NAMUR interface according to VDI/VDE 3845 or integral attachment according to VDI/VDE 3847
including fastening screws and seals.
Î See Fig. 4.
Order no.:Aluminum, Ematal coating:
Stainless steel

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment (¼“)
according to VDI/VDE 3847 interface

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR
interface ¼“ according to VDI/VDE 3847

Description of functions:

The distance plate is mounted between the actuator and pilot valve. Additional space is gainedby using the distance plate. As a result, it is possible to also mount pilot valves whose shapeprevents them being flush-mounted directly to the actuator.

Logic symbol:

6

G ¼: 1400-9741
G ¼: 1402-0234

1

9

2

3

AB 11 ENOn the valve

On the actuator

32

50

24

t = 2050

Dimensions (in mm)

Fig. 4: Distance plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN7

2.2 Distance plate with NAMUR interface ½“
Distance plate made of aluminum, for pilot valves with NAMUR interface according to VDI/VDE 3845 on actuators with NAMUR
interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 5.
Order no.:Aluminum G ½: 1400-9743

Mounting interface:

Actuators with VDI/VDE 3845 interface ½“

Pilot valve interface:

Pilot valves with NAMUR interface ½“ according to VDI/VDE 3845

Description of functions:

The distance plate is mounted between the actuator and pilot valve. Additional space is gainedby using the distance plate. As a result, it is possible to also mount pilot valves whose shape prevents them being flush-mounted directly to the actuator.

Logic symbol:

8

2

3

AB 11 ENOn the valve

On the actuator

45

84

40

t = 2060

Dimensions (in mm)

Fig. 5: Distance plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN9

2.3 Sealing plate with extended NAMUR interface ¼“
Sealing plate made of aluminum, for pilot valves with NAMUR interface according to VDI/VDE 3847 on actuators with NAMUR
interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 6.
Order no.:Aluminum: 1402-1480

Mounting interface:

Actuators with VDI/VDE 3845 interface ¼“

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The sealing plate is mounted between the actuator with NAMUR interface according to VDI/
VDE 3845 and pilot valve. The sealing plate is used to mount pilot valves with an extended
NAMUR interface according to VDI/VDE 3847 onto an actuator whose facing is too small to seal
the pilot air ducts 1 and 9 of the extended NAMUR interface.

Logic symbol:

10

2

3

AB 11 ENOn the actuator

61,6

On the valve24

t = 2061,632

Dimensions (in mm)

Fig. 6: Sealing plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN11

2.4 Adapter plate for NAMUR interface ¼“ on NAMUR interface ½“Adapter plate made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3845 or VDI/
VDE 3847 on actuators with NAMUR interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 7.
Order no.:Aluminum, Ematal coating:
Stainless steel:Mounting interface:

Actuators with VDI/VDE 3845 interface ½“

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used tomount pilot valves with a NAMUR interface according to VDI/VDE 3845 or VDI/VDE 3847 with¼“ thread on actuators with NAMUR interface according to VDI/VDE 3845 with ½“ thread.
When pilot valves with extended NAMUR interface according to VDI/VDE 3847 are used, ports
1 and 9 are sealed off by the adapter plate.

Logic symbol:

121380-1652
1380-1797

2

3

AB 11 ENOn the actuator

32

40

24

t = 2080

On the valve

45
60

Dimensions (in mm)

Fig. 7: Adapter plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN13

2.5 Adapter plate for NAMUR interface ½“ on NAMUR interface ¼“
Adapter plate made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3845 on actuatorswith NAMUR interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 8.
Order no.:Aluminum, Ematal coating:
Stainless steel:Mounting interface:

Actuators with VDI/VDE 3845 interface ¼“

Pilot valve interface:

Pilot valves with NAMUR interface ½“ according to VDI/VDE 3845

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used tomount pilot valves with a NAMUR interface according to VDI/VDE 3845 with ½“ thread on actuators with NAMUR interface according to VDI/VDE 3845 with ¼“ thread.

Logic symbol:

141380-1795
1380-1796

2

3

AB 11 ENOn the actuator24

40

t = 2084

On the valve

3

45

32
60

Dimensions (in mm)

Fig. 8: Adapter plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN15

2.6 Adapter plate for extended NAMUR interface ¼“ with external threaded connections
Adapter plate with threaded connections made of aluminum (with Ematal coating)/stainless steel, for pilot valves with extended
NAMUR interface according to VDI/VDE 3847 on actuators with NAMUR interface according to VDI/VDE 3845 including fastening screws and seals and 1/8“ vent plug (see Fig. 9).
Order no.:G ¼:
¼ NPT:G ¼:¼ NPT:

1402-0695
1402-0697
1402-0696
1402-0698

G 1/8 · 1/8 NPT:G 1/8 · 1/8 NPT:

1992-3965
8323-0028
8414-0136

Aluminum, Ematal coating
Aluminum
Stainless steel
Stainless steel
Accessories
Vent plugScrew plug
Seal for screw plug:

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment (¼“) according
to VDI/VDE 3847 interface

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator with NAMUR interface according to VDI/
VDE 3845 and pilot valve. The supply air is connected to port 1 of the adapter plate, which issupplied to the port 1 of the pilot valve through the extended NAMUR interface according to
VDI/VDE 3847. An external pilot supply can be used at port 9 of the adapter plate for pilot-operated valves. The adapter plate is fitted with two vent plugs in port 3 (one ¼” and one 1/8”).
Both ports 3 on the adapter plate can be used for an optional exhaust air feedback of other valve
accessories. The 1/8” vent plug is sealed by a blanking plug in the delivered state. The 1/8” ventplug is included in the scope of delivery.
The adapter plate allows the pilot valve to be exchanged without making any changes to the air
supply lines.

Logic symbol:

2
3
9
1

3
3

Note
If the pilot valve does not have its own vent plug, the 1/8“ screw plug must be replaced with the 1/8” vent plug (1992-3965) includedin the scope of delivery.
! NOTICE
The exhaust air pressure must not exceed 6 bar when the 1/8 vent plug (1992-3965) is used.

16

AB 11 ENOn the actuator

61,6

On the valve24

t = 34,532

61,6

Dimensions (in mm)

Fig. 9: Adapter plate with external connection to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN17

2.7 Adapter plate for NAMUR interface ½“ on threaded connection ½“
Adapter plate with threaded connections, made of aluminum (powder coated)/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3845 on threaded connection
Î See Fig. 10.
Order no.:Aluminum, Ematal coating
Aluminum
Stainless steel
Stainless steel

Mounting interface:

Actuators with threaded connections

Pilot valve interface:

Pilot valves with NAMUR interface ½“ according to VDI/VDE 3845

Description of functions:

The adapter plate is mounted between the actuator with threaded connection and the pilot valve.
The adapter plate is used to fit pilot valves with a NAMUR interface according to VDI/VDE 3845
with ½”-size with a connecting thread and integrate them into a pipe connection.

Logic symbol:

18

G ½: 1402-1833½ NPT: 1402-1834
G ½: 1402-1835½ NPT: 1402-1836

2

3

AB 11 ENOn the valve

On the actuator84

40

t = 206045Dimensions (in mm)

Fig. 10: Adapter plate to mount a Type 3967 Solenoid Valve on a linear actuator

AB 11 EN19

2.8 Adapter plate with extended NAMUR interface ¼“ on NAMUR rib
Adapter plate with threaded connections, made of aluminum/stainless steel, for pilot valves with extended NAMUR interface according to VDI/VDE 3847 on actuators with NAMUR rib according to IEC 60534-6 including fastening screw.
Î See Fig. 11.
Order no.:Aluminum, Ematal coating
Aluminum
Stainless steel
Stainless steel

Mounting interface:

Actuators with NAMUR rib according to IEC 60534-6/actuators with threaded connections

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used tomount the pilot valve to the NAMUR rib according to IEC 60534-6 and to integrate it into thepipeline using the connecting thread. The supply air is connected to port 1 of the adapter plate,which is supplied to the port 1 of the pilot valve through the extended NAMUR interface
according to VDI/VDE 3847. An external pilot supply can be used at port 9 of the adapter platefor pilot-operated valves. The port 3 of the adapter plate can be used for an optional exhaust air
feedback of other valve accessories.

G ¼:¼ NPT:G ¼:¼ NPT:

1400-9598
1400-9599
1400-9600
1400-9601

The adapter plate allows the pilot valve to be exchanged without making any changes to the air
supply lines.
Logic symbol:

1

9

2

3

Note
If the pilot valve does not have separate venting, install a vent plug in the pipe at port 3.

20

AB 11 ENOn the valve

On the actuator

30,8

52,5

32

90,8

105

t = 24,5

28

24

38
48
61,6

Dimensions (in mm)

Fig. 11: Adapter plate to mount a Type 3967 Solenoid Valve on a linear actuator

AB 11 EN21

2.9 Adapter plate with NAMUR interface ¼“ on NAMUR rib
Adapter plate with threaded connections, made of aluminum, for pilot valves with NAMUR interface according to VDI/VDE 3845
on actuators with NAMUR rib according to IEC 60534-6 including fastening screw.
Î See Fig. 12.
Order no.:Aluminum, Ematal coating
Aluminum

Mounting interface:

Actuators with NAMUR rib according to IEC 60534-6/actuators with threaded connections

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used tomount the pilot valve to the NAMUR rib according to IEC 60534-6 and to integrate it into thepipeline using the connecting thread.

Logic symbol:

22

G ¼: 1400-6751¼ NPT: 1400-9924

2

3

AB 11 ENOn the valve

On the actuator

24

67

92

t = 3032

3460

Dimensions (in mm)

Fig. 12: Adapter plate to mount a Type 3967 Solenoid Valve on a linear actuator

AB 11 EN23

2.10 Adapter plate with NAMUR interface ½“ on NAMUR rib
Adapter plate with threaded connections, made of aluminum/stainless steel, for pilot valves with NAMUR interface according to
VDI/VDE 3845 on actuators with NAMUR rib according to IEC 60534-6 including fastening screw.
Î See Fig. 13.
Order no.:Aluminum
Aluminum
Stainless steel
Stainless steel

Mounting interface:

Actuators with NAMUR rib according to IEC 60534-6/actuators with threaded connections

Pilot valve interface:

Pilot valves with NAMUR interface ½“ according to VDI/VDE 3845

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used tomount the pilot valve to the NAMUR rib according to IEC 60534-6 and to integrate it into thepipeline using the connecting thread.

Logic symbol:

24

G ½:
½ NPT:G ½:½ NPT:

1402-0827
1402-0829
1402-0828
1402-0830

2

3

AB 11 ENOn the valve

On the actuator

30,5

45

72

97

t = 4440

74

Dimensions (in mm)

Fig. 13: Adapter plate to mount a Type 3967 Solenoid Valve on a linear actuator

AB 11 EN25

2.11 Adapter plate with NAMUR interface ½“ on NAMUR rib with additional connections
Adapter plate with threaded connections, made of aluminum/stainless steel, for pilot valves with NAMUR interface according to
VDI/VDE 3845 on actuators with NAMUR rib according to IEC 60534-6 including fastening screw.
Î See Fig. 14.
Order no.:Aluminum, Ematal coating
Stainless steel

G ½: 1402-1461
G ½: 1402-1462

Mounting interface:

Actuators with NAMUR rib according to IEC 60534-6/actuators with threaded connections

Pilot valve interface:

Pilot valves with NAMUR interface ½“ according to VDI/VDE 3845

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used tomount the pilot valve to the NAMUR rib according to IEC 60534-6 and to integrate it into thepipeline using the connecting thread.
The adapter plate has additional ports and can be used for an optional exhaust air feedback ofother valve accessories.

Logic symbol:

2

3
3
2

26

AB 11 ENOn the valve

On the actuator

30,5

45

72

97

t = 4474

40

Dimensions (in mm)

Fig. 14: Adapter plate to mount a Type 3967 Solenoid Valve on a linear actuator

AB 11 EN27

2.12 Adapter plate with extended NAMUR interface ¼“ for SAMSON Types 3353 and 3354
ValvesAdapter plate made of stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3845 or extended NAMUR interface according to VDI/VDE 3847 for mounting on SAMSON Types 3353 and 3354 Angle Seat Valves.
Î See Fig. 15.
Order no.:Stainless steel: 1409-3001 1)

Mounting interface:

SAMSON Types 3353 and 3354 Angle Seat Valves

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator of the angle seat valve and the pilot valve. It
routes the pneumatic connections of the actuator to an interface according to VDI/VDE 3845. It
allows pilot valves with an interface according to VDI/VDE 3835 or VDI/VDE 3847 to be mounted without any piping between the actuator and pilot valve.

1)

28

The following parts are additionally required for pilot valves with extended NAMUR interface ¼” according to VDI/VDE 3847:
1x M5x6 screw (stainless steel 1.4404), order number 8333-1237
1x M5 seal (for M5x6 screw), order number 0790-6118

AB 11 ENOn the valve

On the actuator

50

24

t=4

62

32

Dimensions (in mm)

Fig. 15: Adapter plate with Type 3967 Solenoid Valve on Type 3353 Angle Seat ValveAB 11 EN29

2.13 Adapter plate with extended NAMUR interface ¼“ for SAMSON Type 3351 On/off Valve
Adapter plate made of stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3845 or VDI/VDE 3847 formounting on SAMSON Type 3351 On/off Valve.
Î See Fig. 16.
Order no.:Stainless steel: 1400-9638 1)
Stainless steel: 1402-0095 2)

Mounting interface:

SAMSON Type 3351 On/off Valve

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator of the on/off valve and the pilot valve. It
routes the pneumatic connections of the actuator to an interface according to VDI/VDE 3845. It
allows pilot valves with an interface according to VDI/VDE 3845 or VDI/VDE 3847 to be mounted without any piping between the actuator and pilot valve.

1)
2)

30

For pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847
Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845

AB 11 ENOn the valve

On the actuator

49

32

t=8

16
24

49

Dimensions (in mm)

Fig. 16: Adapter plate to mount a Type 3967 Solenoid Valve on Type 3351 On/off ValveAB 11 EN

31

3 Double-axial adapters
SAMSON's modular double-axial adapters are mounted between the actuator and pilot valve. They are used to adapt the mounting position of the pilot valve by turning the interface.
The pilot air ducts of the double-axial adapters with extended NAMUR interface according to VDI/VDE 3847 are also diverted
correspondingly.

3.1 Double-axial adapter 180° with extended NAMUR interface ¼“
Double-axial adapter made of aluminum, for pilot valves with NAMUR interface according to VDI/VDE 3845 or VDI/VDE 3847
on actuators with NAMUR interface according to VDI/VDE 3845 or integral attachment according to VDI/VDE 3847 including
fastening screws and seals.
Î See Fig. 17.
Order no.:Aluminum: 1402-0280

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment according to
VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The double-axial adapter is mounted between the actuator and pilot valve. The double-axial
adapter is used to optimize the mounting position of the pilot valve by turning the interface by180°.

Logic symbol:

32

1

9

2

3

AB 11 ENOn the actuator

32

32

t = 19,5

61,6

On the valve

24

24

61,6

Dimensions (in mm)

Fig. 17: Double-axial adapter to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN33

3.2 Double-axial adapter 90° with NAMUR interface ½“
Double-axial adapter made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3845 on
actuators with NAMUR interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 18.
Order no.:Aluminum:
Stainless steel:Mounting interface:

Actuators with VDI/VDE 3845 interface ½“

Pilot valve interface:

Pilot valves with NAMUR interface ½“ according to VDI/VDE 3845

Description of functions:

The double-axial adapter is mounted between the actuator and pilot valve. The double-axial
adapter is used to optimize the mounting position of the pilot valve by turning the interface by
90°.

Logic symbol:

34

1402-0602
1402-0603

2

3

AB 11 ENOn the actuator

45

40

t = 4086

On the valve

40

45

76

Dimensions (in mm)

Fig. 18: Double-axial adapter to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN35

3.3 Double-axial adapter 90° with NAMUR interface ½” with additional threaded connections
Double-axial adapter made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3845 on
actuators with NAMUR interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 19.
Order no.:Aluminum, Ematal coating
Stainless steel

G ½: 1402-1662
G ½: 1402-1663

Mounting interface:

Actuators with VDI/VDE 3845 interface ½“

Pilot valve interface:

Pilot valves with NAMUR interface ½“ according to VDI/VDE 3845

Description of functions:

The double-axial adapter is mounted between the actuator and pilot valve. The double-axial
adapter is used to optimize the mounting position of the pilot valve by turning the interface by
90°.
The double-axial adapter has additional threaded ports (G ½) and can be used for an optional
exhaust air feedback of other valve accessories.

Logic symbol:

36

2

3

AB 11 ENOn the valve

On the actuator

45
86

40

t = 6040
7645

Dimensions (in mm)

Fig. 19: Double-axial adapter to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN37

4 Restrictor plates
SAMSON's modular restrictor plates are mounted between the actuator and pilot valve. They allow the opening and/or closing
times of the actuator to be adjusted by restricting the corresponding air flow rate.

4.1 Fine exhaust air restrictor for extended NAMUR interface ¼“
Restrictor plate for restricting the exhaust air flow based on the pressure, made of aluminum, for pilot valves with NAMUR interface according to VDI/VDE 3845 or VDI/VDE 3847 on actuators with NAMUR interface according to VDI/VDE 3845 or integral
attachment with VDI/VDE 3847 interface including fastening screws and seals.
Î See Fig. 22.
Order no.:Aluminum with Ematal coating:Aluminum with Ematal coating

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment according to
VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The restrictor plate is mounted between the actuator and pilot valve. This restrictor plate allows
the closing time of the actuator to be adjusted by restricting the flow rate of the exhaust air within
the range from KVS 0 to 0.27 (KVS 0.002 to 0.27 for SIL-approved restrictors 1)) at 6 bar.

Logic symbol:

1)

38100200804
SIL: 100200805 1)

1

9

2

3

Suitable for use in safety-instrumented systems (SIL) according to IEC 61508 observing the SIL suitability of the solenoid valve/restrictor plateassembly

AB 11 EN

32

63.1

24

61.6

t = 22

61.6

Dimensions (in mm)

Fig. 20: Restrictor plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN39

4.2 Fine supply air restrictor of extended NAMUR interface ¼“
Restrictor plate for restricting the supply air flow based on the pressure, made of aluminum, for pilot valves with NAMUR interface
according to VDI/VDE 3845 or VDI/VDE 3847 on actuators with NAMUR interface according to VDI/VDE 3845 or integral attachment with VDI/VDE 3847 interface including fastening screws and seals.
Î See Fig. 23.
Order no.:Aluminum with Ematal coating:Aluminum with Ematal coating

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment according to
VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The restrictor plate is mounted between the actuator and pilot valve. This restrictor plate allows
the opening time of the actuator to be adjusted by restricting the flow rate of the supply air within
the range from KVS 0 to 0.27 (KVS 0.002 to 0.27 for SIL-approved restrictors 1)) at 6 bar.

Logic symbol:

1)

100200806
SIL: 100200807 1)

1

9

2

3

Suitable for use in safety-instrumented systems (SIL) according to IEC 61508 observing the SIL suitability of the solenoid valve/restrictor plateassemblyNote
The reduction of the air supply may cause a stick-slip effect in the actuator.

40

AB 11 EN

32

63.1

24

61.6

t = 22

61.6

Dimensions (in mm)

Fig. 21: Restrictor plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN41

4.3 Exhaust air restrictor for extended NAMUR interface ¼“
Restrictor plate for restricting the exhaust air flow based on the pressure, made of aluminum/stainless steel, for pilot valves with
NAMUR interface according to VDI/VDE 3845 or VDI/VDE 3847 on actuators with NAMUR interface according to VDI/
VDE 3845 or integral attachment with VDI/VDE 3847 interface including fastening screws and seals.
Î See Fig. 22.
Order no.:Aluminum:
Aluminum
Stainless steel:
Stainless steel

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment according to
VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The restrictor plate is mounted between the actuator and pilot valve. This restrictor plate allows
the closing time of the actuator to be adjusted by restricting the flow rate of the exhaust air within
the range from KVS 0 to 0.28 (KVS 0.01 to 0.28 for SIL-approved restrictors 1)) at 6 bar.

Logic symbol:

1)

42100200794
SIL: 100200795 1)
100200796
SIL: 100200797 1)

1

9

2

3

Suitable for use in safety-instrumented systems (SIL) according to IEC 61508 observing the SIL suitability of the solenoid valve/restrictor plateassembly

AB 11 ENOn the valve

On the actuator

24

61,6

t = 2032

61,6Dimensions (in mm)

Fig. 22: Restrictor plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN43

4.4 Supply air restrictor of extended NAMUR interface ¼“
Restrictor plate for restricting the supply air flow based on the pressure, made of aluminum/stainless steel, for pilot valves with
NAMUR interface according to VDI/VDE 3845 or VDI/VDE 3847 on actuators with NAMUR interface according to VDI/
VDE 3845 or integral attachment with VDI/VDE 3847 interface including fastening screws and seals.
Î See Fig. 23.
Order no.:Aluminum:
100200790
Aluminum
SIL: 100200791 1)
Stainless steel:100200792
Stainless steel SIL: 100200793 1)

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment according to
VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The restrictor plate is mounted between the actuator and pilot valve. This restrictor plate allows
the opening time of the actuator to be adjusted by restricting the flow rate of the supply air within
the range from KVS 0 to 0.28 (KVS 0.01 to 0.28 for SIL-approved restrictors 1)) at 6 bar.

Logic symbol:

1)

1

9

2

3

Suitable for use in safety-instrumented systems (SIL) according to IEC 61508 observing the SIL suitability of the solenoid valve/restrictor plateassemblyNote
The reduction of the air supply may cause a stick-slip effect in the actuator.

44

AB 11 ENOn the valve

On the actuator

24

61,6

t = 2032

61,6Dimensions (in mm)

Fig. 23: Restrictor plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN45

4.5 Double exhaust air restrictor with extended NAMUR interface ¼“
Restrictor plate for restricting the exhaust air flow based on the pressure, made of aluminum/stainless steel, for pilot valves with
NAMUR interface according to VDI/VDE 3845 or VDI/VDE 3847 on actuators with NAMUR interface according to VDI/
VDE 3845 or integral attachment with VDI/VDE 3847 interface including fastening screws and seals.
Î See Fig. 24.
Order no.:Aluminum:
100200798
Aluminum
SIL: 100200799 1)
Stainless steel:100200800
Stainless steel SIL: 100200801 1)

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment according to
VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The restrictor plate is mounted between the actuator and pilot valve. This restrictor plate allows
the opening or closing time of a double-acting actuator to be adjusted by restricting the flow rateof both exhaust air flows within the range from KVS 0 to 0.28 (KVS 0.01 to 0.28 for SIL-approved
restrictors 1)) at 6 bar.

Logic symbol:

1)

46

1

9

2

3

Suitable for use in safety-instrumented systems (SIL) according to IEC 61508 observing the SIL suitability of the solenoid valve/restrictor plateassembly

AB 11 ENOn the valve

On the actuator

24

61,6

t = 2032

61,6Dimensions (in mm)

Fig. 24: Restrictor plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN47

4.6 Universal restrictor with extended NAMUR interface ¼“
Restrictor plate for restricting the air flow based on the pressure, made of aluminum/stainless steel, for pilot valves with NAMUR
interface according to VDI/VDE 3845 or VDI/VDE 3847 on actuators with NAMUR interface according to VDI/VDE 3845 or integral attachment with VDI/VDE 3847 interface including fastening screws and seals.
Î See Fig. 25.
Order no.:Aluminum
Stainless steel

Mounting interface:

Actuators with interface according to VDI/VDE 3845 (¼“) or integral attachment according to
VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with NAMUR interface ¼“ according to VDI/VDE 3845 or extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The restrictor plate is mounted between the actuator and pilot valve. This restrictor plate allows
the opening or closing time of a double-acting actuator to be adjusted by restricting the flow rateof the supply air within the range from KVS 0.01 to 0.28 at 6 bar. The actuator chamber (port 2or 4) that is restricted can be changed by turning the restrictor plate by 180°.

Logic symbol:

1)

48

SIL: 100200802 1)
SIL: 100200803 1)

1

9

2

3

Suitable for use in safety-instrumented systems (SIL) according to IEC 61508 observing the requirements in the Manufacturer's Declaration
No. 1296 and Safety Manual u SH 3967-2

AB 11 ENOn the valve

On the actuator

24

61,6

t = 2061,632

Dimensions (in mm)

Fig. 25: Restrictor plate to mount a Type 3967 Solenoid Valve on a rotary actuator

AB 11 EN49

5 Special constructions
SAMSON's modular special constructions make it possible to use solenoid valves in special engineered cases. Special constructions include redundancy plates, an adapter plate for operating several solenoid valves using a single air supply as well as an
adapter plate to implement the closed-circuit principle.

5.1 Emergency supply · NAMUR interface ¼“, integrated parallel connection – 2oo2
Adapter plate made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3847 on actuatorswith NAMUR interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 26.
Order no.:Aluminum, Ematal coating
Aluminum
Stainless steel
Stainless steel

Mounting interface:

Actuators with VDI/VDE 3845 interface ¼“

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used toincrease the availability through parallel connection of two pilot valves. The pilot valves aremounted to the left and right on the extended NAMUR interfaces according to VDI/VDE 3847.
The adapter plate is fastened to the actuator using a third NAMUR interface according to VDI/
VDE 3845.

G ¼:¼ NPT:G ¼:¼ NPT:

Logic symbol:

1402-0007
1402-0009
1402-0008
1402-0010

V1

V2
9

3

1

2
3

Note
The pilot valve's venting at the connecting surface V2 of the adapter plate must be sealed.
Refer to TV-SK 9932 for a detailed mounting description.

50

AB 11 ENOn the actuator

Supply air

32
66,6

30,5
45,6

24

32
61,6

On the valve side (both sides)

22

24

42,3
61,6

Dimensions (in mm)

Fig. 26: Adapter plate to mount a Type 3967 and Type 3963 Solenoid Valve on a rotary actuator

AB 11 EN51

5.2 Emergency venting · NAMUR interface ¼“, integrated series connection – 1oo2
Adapter plate made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3847 on actuatorswith NAMUR interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 27.
Order no.:Aluminum, Ematal coating
Aluminum
Stainless steel
Stainless steel

Mounting interface:

Actuators with VDI/VDE 3845 interface ¼“

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used toincrease the safety through series connection of two pilot valves. The pilot valves are mounted to
the left and right on the extended NAMUR interfaces according to VDI/VDE 3847. The adapter
plate is fastened to the actuator using a third NAMUR interface according to VDI/VDE 3845.

G ¼:¼ NPT:G ¼:¼ NPT:

1402-0011
1402-0013
1402-0012
1402-0014

Note
The pilot valves at V1 and V2 interfaces of the adapter plate must have a venting.
Refer to TV-SK 9932 for a detailed mounting description.

52

AB 11 ENOn the actuator

Supply air

32
66,6

24

41,6

32,6

18

24

32
61,6

On the valve side (both sides)

16

61,6

Dimensions (in mm)

Fig. 27: Adapter plate to mount two Type 3967 Solenoid Valves on a rotary actuator

AB 11 EN53

5.3 Emergency venting · Extended NAMUR interface ¼“, integrated series connection – 1oo2
Adapter plate made of aluminum, for pilot valves with NAMUR interface according to VDI/VDE 3847 on actuators with integral
attachment according to VDI/VDE 3847 including fastening screws and seals.
Î See Fig. 28.
Order no.:Aluminum G ¼: 1402-1873

Mounting interface:

Actuators with integral attachment with VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used toincrease the safety through series connection of two pilot valves. The pilot valves are mounted to
the left and right on the extended NAMUR interfaces according to VDI/VDE 3847. The adapter
plate is fastened to the actuator using integral attachment according to VDI/VDE 3847.

Note
The pilot valves at V1 and V2 interfaces of the adapter plate must have a venting.
Refer to TV-SK 9932 for a detailed mounting description.

54

AB 11 ENOn the actuator

Supply air

32
66,6

24

42,6

31,6

18

24

32
61,6

On the valve side (both sides)

19

61,6

Dimensions (in mm)

Fig. 28: Adapter plate to mount Type 3967 Solenoid Valves on a linear actuator

AB 11 EN55

5.4 Emergency supply · NAMUR interface ½“, integrated parallel connection through booster
valve – 2oo2
Pneumatic booster valve made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3847 on
actuators with NAMUR interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 29.
Order no.:Aluminum
Aluminum
Stainless steel
Stainless steel

Mounting interface:

Actuators with VDI/VDE 3845 interface ½“

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The booster valve is used to increase the availability through parallel connection of two pilot
valves and raises their flow coefficient to KVS 1.9. The pilot valves are mounted to the left andright on the extended NAMUR interfaces according to VDI/VDE 3847. The booster valve is fastened to the actuator using a third NAMUR interface according to VDI/VDE 3845.

1)G¼
SIL: Configuration ID 5737887 1)¼ NPT SIL: Configuration ID 5800280 1)
G¼
SIL: Configuration ID 5800281 1)¼ NPT SIL: Configuration ID 5800283 1)

Refer to the referenced documents for Type 3756 Pneumatic Booster Valve for more details and other versions.

Note
The pilot valves at V1 and V2 interfaces of the booster valve must have a venting.

56

AB 11 EN

Supply air

45

61,6

On the actuatort = 87

56

15,3

40

96
192

Dimensions (in mm)

Fig. 29: Booster valve to mount two Type 3967 Solenoid Valves on a rotary actuator

AB 11 EN57

5.5 Emergency venting · NAMUR interface ½“, integrated series connection through booster
valve – 1oo2
Pneumatic booster valve made of aluminum/stainless steel, for pilot valves with NAMUR interface according to VDI/VDE 3847 on
actuators with NAMUR interface according to VDI/VDE 3845 including fastening screws and seals.
Î See Fig. 30.
Order no.:Aluminum
Aluminum
Stainless steel
Stainless steel

Mounting interface:

Actuators with VDI/VDE 3845 interface ½“

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The booster valve is used to increase the safety through series connection of two pilot valves andto raise their KVS to 1.9. The pilot valves are mounted to the left and right on the extended
NAMUR interfaces according to VDI/VDE 3847. The booster valve is fastened to the actuator using a third NAMUR interface according to VDI/VDE 3845.

1)G½
SIL: 3756 · Configuration ID 5711460 1)½ NPT SIL: 3756 · Configuration ID 5711464 1)
G½
SIL: 3756 · Configuration ID 5711730 1)½ NPT SIL: 3756 · Configuration ID 5711726 1)

Refer to the referenced documents for Type 3756 Pneumatic Booster Valve for more details and other versions.

Note
The pilot valves at V1 and V2 interfaces of the booster valve must have a venting.

58

AB 11 EN

Supply air

45

61,6

On the actuatort = 87

56
15,3

40

96
191

Dimensions (in mm)

Fig. 30: Booster valve to mount two Type 3967 Solenoid Valves on a rotary actuator

AB 11 EN59

5.6 Adapter plate for four NAMUR interfaces ¼“ on threaded connection ¼“
Adapter plate with threaded connections, made of aluminum, for pilot valves with NAMUR interface according to VDI/VDE 3847
on threaded connection including fastening screws and seals.
Î See Fig. 31.
Order no.:Aluminum G ¼:

1402-0438

Accessories
Dummy plate:Screw plug:
O-ring 14x1.5:

1402-1290 1)
0070-0858
8421-0070

Mounting interface:

Actuators with threaded connections

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the actuator and pilot valve. The adapter plate is used tosupply up to four pilot valves simultaneously over a central supply air connection. The pilot valves
are mounted on the extended NAMUR interfaces according to VDI/VDE 3847 and can be included in the pipe hook-up using a connecting thread. Any connecting spaces not used can besealed with a dummy plate (accessories).

1)60

Including fastening screws and gaskets

AB 11 EN

11

35

Connections for hook-up

50,5

29

41

29

51

29

41

6,5

44

32

58

On the valve

75

29

24
150

150
350

Dimensions (in mm)

Fig. 31: Adapter plate

AB 11 EN61

5.7 Adapter plate (closed-circuit principle)
Adapter plate made of aluminum, for pilot valves with NAMUR interface according to VDI/VDE 3847 on actuators with integral
attachment according to VDI/VDE 3847 including fastening screws and seals.
Î See Fig. 32.
Order no.:Aluminum G ¼: 1402-1553

Mounting interface:

Actuators with integral attachment with VDI/VDE 3847 interface (¼“)

Pilot valve interface:

Pilot valves with extended NAMUR interface ¼“ according to VDI/VDE 3847

Description of functions:

The adapter plate is mounted between the mounting block and pilot valve. The adapter plate isused to implement the closed-circuit principle. The adapter plate connects port 9 of the mounting
block to the port 9 and port 3 of the pilot valve. As a result, closed-loop control of the actuatortakes place when the pilot valve is energized. When the pilot valve is de-energized, the actuatoris supplied with maximum air.

NoteThis function is only provided when pilot-operated pilot valves are used.
The pilot valve must have a sealable venting port.

62

AB 11 ENOn the valve

On the actuator

24

50

32

t = 2050

Dimensions (in mm)

Fig. 32: Adapter plate

AB 11 EN63

AB 11 EN

2023-11-10 · English

Specifications subject to change without notice