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 |
|---|---|
| Differential Pressure Max | 10 |
| Differential Pressure Min | 2 |
| Flow Factor / Flow Coefficient | 12,5 |
| Flow Max l/min Double | 860 |
| IP Class | IP65 |
| Manual operation | Yes |
| Max. pressure | 10 |
| Power Consumption | 0 |
| Response Closing | 11 |
|---|---|
| Response From Stroke | 14 |
| Short Circuit Protection | Yes |
| Temperature range from | -25 |
| Temperature range to | 60 |
| Throughput | 6 |
| Weight | 0.43 |
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.
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Great electrical installations don't fail because of the major components. They fail because of the small ones that didn't get enough attention.
It's easy to focus on the big-ticket items during specification — and let the terminal blocks become an afterthought. But inferior connection components have a habit of making themselves known over time. Loose connections, degraded insulation, premature failure. The kind of faults that are frustrating to trace and expensive to fix.
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Conta-Clip PPVK push-in potential distribution terminals simplify control cabinet wiring with tool-free connections, compact DIN rail mounting, and reliable current distribution up to 41A.
The PMX fuse holder range is compact, halogen-free, and manufactured in Europe for fast availability. Available in 10×38, 14×51, and 22×58 sizes with IEC, UL, and CSA approvals, they feature silver-plated contacts, IP20 touch-safe design, and optional blown fuse indicators — giving panel builders reliable, safe, and flexible protection.
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The PMX fuse holder range is compact, halogen-free, and manufactured in Europe for fast availability. Available in 10×38, 14×51, and 22×58 sizes with IEC, UL, and CSA approvals, they feature silver-plated contacts, IP20 touch-safe design, and optional blown fuse indicators — giving panel builders reliable, safe, and flexible protection.
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| My favourites | Articles | Approvals | Flow Factor / Flow Coefficient | Manual operation | Max. pressure | Power Consumption | Response Closing | Response From Stroke | Short Circuit Protection | Throughput | Weight | Voltage AC | Voltage DC | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Valve 3/2 NC. Monostable w/o coil. G1/4
Art:
G551A005MS
Copied
|
IEC, TÜV
|
12,5
|
Yes
|
10
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0
|
11
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14
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Yes
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6
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0.43
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Valve 3/2NC G1/4. sol / spring 230/50
Art:
SCG551A005MS
Copied
|
IEC, TÜV
|
12,5
|
Yes
|
10
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2.5
|
11
|
14
|
Yes
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6
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0.43
|
230
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Valve 3/2 NC G1/4 24VAC
Art:
SCG551A005MSS2
Copied
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24
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Valve 3/2 NC 24VDC G1/4"
Art:
SCG551A005MSS3
Copied
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IEC, TÜV
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12,5
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Yes
|
10
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3
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11
|
14
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Yes
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6
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0.43
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24
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Bistable valve 3/2 NC without coil
Art:
G551A006MS
Copied
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IEC, TÜV
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12,5
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Yes
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10
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0
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11
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14
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Yes
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6
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0.35
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Bistable valve 3/2 NC 230 VAC G1/4"
Art:
SCG551A006MS
Copied
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IEC, TÜV
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12,5
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Yes
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10
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2.5
|
11
|
14
|
Yes
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6
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0.35
|
230
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Art:
SCG551A006MSS2
Copied
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24
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Bistable valve 3/2 NC 24VDC G1/4"
Art:
SCG551A006MSS3
Copied
|
IEC, TÜV
|
12,5
|
Yes
|
10
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3
|
11
|
14
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Yes
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6
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0.35
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24
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Valve 5/2. Monostable w/o coil. G1/4
Art:
G551A017MS
Copied
|
IEC, TÜV
|
12,5
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Yes
|
10
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0
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11
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14
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Yes
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6
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0.35
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Valve 5/2 monostable. 230VAC, G1/4"
Art:
SCG551A017MS
Copied
|
IEC, TÜV
|
12,5
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Yes
|
10
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2.5
|
11
|
14
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Yes
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6
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0.35
|
230
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Valve, 5/2, G1/4"", 24VAC
Art:
SCG551A017MSS2
Copied
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24
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Valve, 5/2, G1/4", 24VDC
Art:
SCG551A017MSS3
Copied
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IEC, TÜV
|
12,5
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Yes
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10
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3
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11
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14
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Yes
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6
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0.35
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24
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Valve 5/2. Bistable w/o coil. G1/4
Art:
G551A018MS
Copied
|
IEC, TÜV
|
12,5
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Yes
|
10
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0
|
11
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14
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Yes
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6
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0.43
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Valve 5/2. Bistable 230 VAC. G1/4"
Art:
SCG551A018MS
Copied
|
IEC, TÜV
|
12,5
|
Yes
|
10
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2.5
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11
|
14
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Yes
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6
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0.43
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230
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Valve, 5/2, G1/4, Bistable, 24/50Hz
Art:
SCG551A018MSS2
Copied
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6
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24
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Valve 5/2. Bistable 24 VDC G1/4
Art:
SCG551A018MSS3
Copied
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IEC, TÜV
|
12,5
|
Yes
|
10
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3
|
11
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14
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Yes
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6
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0.43
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24
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Valve 5/3. Closed center .w/o coil. G1/4
Art:
G551A067MS
Copied
|
IEC, TÜV
|
12,5
|
Yes
|
10
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0
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11
|
14
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Yes
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6
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0.43
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Valve 5/3. Closed center. Sol/Spring 230 VAC. G1/4
Art:
SCG551A067MS
Copied
|
IEC, TÜV
|
12,5
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Yes
|
10
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2.5
|
11
|
14
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Yes
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6
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0.43
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230
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Valve 5/3 G1/4 24VAC
Art:
SCG551A067MSS2
Copied
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24
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Valve 5/3. Closed center, Sol/spring. 24 VDC. G1/4"
Art:
SCG551A067MSS3
Copied
|
IEC, TÜV
|
12,5
|
Yes
|
10
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3
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11
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14
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Yes
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6
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0.43
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24
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Valve 5/3. Open center w/o coils. G1/4
Art:
G551A068MS
Copied
|
IEC, TÜV
|
12,5
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Yes
|
10
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0
|
11
|
14
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Yes
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6
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0.43
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Valve 5/3. Open center. Sol/Spring 230 VAC. G1/4"
Art:
SCG551A068MS
Copied
|
IEC, TÜV
|
12,5
|
Yes
|
10
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2.5
|
11
|
14
|
Yes
|
6
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0.43
|
230
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Art:
SCG551A068MSS2
Copied
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24
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Valve 5/3. Open center. Sol/Spring. 24 VDC. G1/4"
Art:
SCG551A068MSS3
Copied
|
IEC, TÜV
|
12,5
|
Yes
|
10
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3
|
11
|
14
|
Yes
|
6
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0.43
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24
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Select a variant in the list