Important notice - We will be performing system maintenance from 4pm Friday 19th April. Whilst we are performing this maintenance there will be no pricing available or ability to place orders. This will last for 2-3 days. Please contact customer support for any enquiries 0116 284 9900. We apologise for any inconvenience caused.
ASCO
There are many different versions of series 551. It can be provided with most voltage variants, with ATEX approved coil for explosive environments and with a low power pilot valve. In addition to aluminium, housing is available in SS316 steel or brass for low temperatures, -40 °C. All electrically and air operated valves with Aluminium housing have environmental protection as standard. This means that all the internal parts are totally sealed against fluids, dust, corrosive substances etc. that may be present in the direct surroundings. Even the exhaust from the return chamber is led to the exhaust ports via an internal channel. For further protection, the pilot exhaust can also be led away to prevent contamination. The environmental protection makes the 551 series an excellent choice for both dirty environments and clean rooms. The electrical enclosure protection for all models is IP65.
| Approvals | IEC, TÜV |
|---|---|
| Close delay | 11 ms |
| Connection | G1/4 |
| Connection port 1-2 | G1/4 |
| Connection port 3 | G1/4 |
| Differential pressure max | 10 bar |
| Differential pressure min | 2 bar |
| Flow factor / flow coefficient | 12,5 |
| Flow max | 860 l/min |
| Function 1 | 3/2 |
| Function 2 | Normally Closed (SPST) |
| IP class | IP65 |
| Manual operation | Yes |
| Material coil | Epoxy |
| Material internal parts | Aluminium, POM, Stainless steel |
| Material of body | Anodised aluminum |
| Material of seals | NBR, PUR |
|---|---|
| Material plunger | Stainless steel |
| Material plunger tube | Stainless steel |
| Material short-circuit ring | Copper |
| Mounting | None |
| Power consumption | 0 W |
| Pressure max | 10 bar |
| Response time off | 14 ms |
| Short circuit protection | Yes |
| Temperature operational max | 60 °C |
| Temperature operational min | -25 °C |
| Throughput | 6 mm |
| Type of valve | Electrically controlled |
| Weight | 0,43 kg |
There are many different versions of series 551. It can be provided with most voltage variants, with ATEX approved coil for explosive environments and with a low power pilot valve. In addition to aluminium, housing is available in SS316 steel or brass for low temperatures, -40 °C. All electrically and air operated valves with Aluminium housing have environmental protection as standard. This means that all the internal parts are totally sealed against fluids, dust, corrosive substances etc. that may be present in the direct surroundings. Even the exhaust from the return chamber is led to the exhaust ports via an internal channel. For further protection, the pilot exhaust can also be led away to prevent contamination. The environmental protection makes the 551 series an excellent choice for both dirty environments and clean rooms. The electrical enclosure protection for all models is IP65.
At OEM Automatic, we can supply a series of components for your one project. All under one roof. This case study discusses how we supplied several components for our customer's new electro-pneumatic control box.
OEM is pleased to announce a range of hydrogen-approved mechanical pressure switches, by Suco! Today, hydrogen plays a key role in climate-neutral energy generation and storage.
OEM Automatic proudly welcomes the addition of WIKA to its lineup. Wika Force brings a new dimension to the realm of force measurement. The integration of WIKA into the OEM Automatic pressure and flow range represents a significant advancement in force measurement technology!
Georg Fischer is a globally renowned provider of process automation systems and solutions for various industries. Join us as we delve into the advantages and opportunities that this new addition brings to you.
Using hydrogen as a source of energy is an emerging market. ESI have a selected range of pressure sensors that are hydrogen-compatible.
Automated machinery in the process and packaging industries is constantly developing. Find out how we can help to automate process and packaging machinery at OEM.
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| Parts | Approvals | Close delay | Connection | Connection port 1-2 | Connection port 3 | Flow factor / flow coefficient | Function 1 | Function 2 | Manual operation | Material coil | Material internal parts | Material of seals | Material plunger | Material plunger tube | Material short-circuit ring | Mounting | Power consumption | Pressure max | Response time off | Short circuit protection | Throughput | Type of valve | Weight | Voltage AC | Voltage dc | Price | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Valve 3/2 NC. Monostable w/o coil. G1/4
Art:
G551A005MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
3/2
|
Normally Closed (SPST)
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
0 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
|
|
| ||
|
Valve 3/2NC G1/4. sol / spring 230/50
Art:
SCG551A005MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
3/2
|
Normally Closed (SPST)
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
2,5 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
230 V
|
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| ||
Art:
SCG551A005MSS2
Copied
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1/4 BSP
|
1/4 BSP
|
1/4 BSP
|
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3/2
|
Normally Closed (SPST)
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24 V
|
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| ||
|
Valve 3/2 NC 24VDC G1/4"
Art:
SCG551A005MSS3
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
3/2
|
Normally Closed (SPST)
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
3 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
|
24 V
|
| ||
|
Bistable valve 3/2 NC without coil
Art:
G551A006MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
3/2
|
Normally Closed (SPST)
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
0 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,35 kg
|
|
|
| ||
|
Bistable valve 3/2 NC 230 VAC G1/4"
Art:
SCG551A006MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
3/2
|
Normally Closed (SPST)
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
2,5 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,35 kg
|
230 V
|
|
| ||
Art:
SCG551A006MSS2
Copied
|
|
|
1/4 BSP
|
1/4 BSP
|
1/4 BSP
|
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3/2
|
Normally Closed (SPST)
|
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24 V
|
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| ||
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Bistable valve 3/2 NC 24VDC G1/4"
Art:
SCG551A006MSS3
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
3/2
|
Normally Closed (SPST)
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
3 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,35 kg
|
|
24 V
|
| ||
Valve 5/2. Monostable w/o coil. G1/4
Art:
G551A017MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/2
|
Power steering with spring return
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
0 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,35 kg
|
|
|
| ||
|
Valve 5/2 monostable. 230VAC, G1/4"
Art:
SCG551A017MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/2
|
Power steering with spring return
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
2,5 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,35 kg
|
230 V
|
|
| ||
|
Art:
SCG551A017MSS2
Copied
|
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1/4 BSP
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5/2
|
Power steering with spring return
|
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Electrically controlled
|
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24 V
|
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| ||
|
Valve, 5/2, G1/4", 24VDC
Art:
SCG551A017MSS3
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/2
|
Power steering with spring return
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
3 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,35 kg
|
|
24 V
|
| ||
Valve 5/2. Bistable w/o coil. G1/4
Art:
G551A018MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/2
|
Electric
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
0 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
|
|
| ||
|
Valve 5/2. Bistable 230 VAC. G1/4"
Art:
SCG551A018MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/2
|
Electric
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
2,5 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
230 V
|
|
| ||
|
Art:
SCG551A018MSS2
Copied
|
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|
G1/4
|
G1/4
|
G1/4
|
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5/2
|
Electric
|
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6 mm
|
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|
24 V
|
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| ||
|
Valve 5/2. Bistable 24 VDC G1/4
Art:
SCG551A018MSS3
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/2
|
Electric
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
3 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
|
24 V
|
| ||
|
Valve 5/3. Closed center .w/o coil. G1/4
Art:
G551A067MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/3
|
Closed center position
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
0 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
|
|
| ||
|
Valve 5/3. Closed center. Sol/Spring 230 VAC. G1/4
Art:
SCG551A067MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/3
|
Closed center position
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
2,5 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
230 V
|
|
| ||
|
Art:
SCG551A067MSS2
Copied
|
|
|
1/4 BSP
|
|
|
|
5/3
|
Closed center position
|
|
|
|
|
|
|
|
|
|
|
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|
|
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|
24 V
|
|
| ||
|
Valve 5/3. Closed center, Sol/spring. 24 VDC. G1/4"
Art:
SCG551A067MSS3
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/3
|
Closed center position
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
3 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
|
24 V
|
| ||
|
Valve 5/3. Open center w/o coils. G1/4
Art:
G551A068MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/3
|
Vented central position
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
0 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
|
|
| ||
|
Valve 5/3. Open center. Sol/Spring 230 VAC. G1/4"
Art:
SCG551A068MS
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/3
|
Vented central position
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
2,5 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
230 V
|
|
| ||
|
Art:
SCG551A068MSS2
Copied
|
|
|
1/4 BSP
|
|
|
|
5/3
|
Vented central position
|
|
|
|
|
|
|
|
|
|
|
|
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|
24 V
|
|
| ||
|
Valve 5/3. Open center. Sol/Spring. 24 VDC. G1/4"
Art:
SCG551A068MSS3
Copied
|
IEC, TÜV
|
11 ms
|
G1/4
|
G1/4
|
G1/4
|
12,5
|
5/3
|
Vented central position
|
Yes
|
Epoxy
|
Aluminium, POM, Stainless steel
|
NBR, PUR
|
Stainless steel
|
Stainless steel
|
Copper
|
None
|
3 W
|
10 bar
|
14 ms
|
Yes
|
6 mm
|
Electrically controlled
|
0,43 kg
|
|
24 V
|
|
Select a variant in the list
If you need any help, you can contact us in one of the following ways:
