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ASCO
The Emerson ASCO 551–553 air-operated spool valve is a precision-engineered directional control valve designed for reliable switching and control of compressed air in industrial pneumatic systems. Manufactured by Emerson ASCO, a global authority in automation and fluid control, this spool valve series is built for high cycle life, fast response, and consistent performance in demanding operating environments.
The 551–553 series features a robust air-operated spool valve design with an internal sliding spool mechanism that ensures accurate port alignment, low internal leakage, and smooth directional switching. These valves are typically pilot-operated by air or solenoid valve actuation, making them ideal for integration into automated control systems and PLC-driven machinery. The durable metal body construction provides excellent resistance to vibration, pressure fluctuations, and industrial contaminants.
Key Advantages
Typical Applications
The Emerson ASCO 551–553 air-operated spool valve is widely used in:
These valves are well suited for applications requiring frequent cycling, precise directional control, and dependable performance in continuous-duty environments.
General Data |
|
|---|---|
| Function | 5/2, Air-Controlled With Spring Return |
| Connection | G1/2 |
| Operating Pressure Differential | 0-10 bar |
| Flow factor / flow coefficient | 52.5 Kv |
| IP class | IP65 |
Material Data |
|
| Material body | Anodized aluminum |
| Material of seals | NBR, PUR |
| Material internal parts | Steel, POM, Aluminium, Zinc Diecast |
Temperature Data |
|
|---|---|
| Temperature ambient from | -25 °C |
| Temperature ambient to | 60 °C |
Additional Data |
|
| Approvals | IEC, TÜV |
| Weight | 1.24 kg |
| Type of valve | Air controlled |
| Pilot pressure | 2-10 bar |
| Flow max | 3800 l/min |
The Emerson ASCO 551–553 air-operated spool valve is a precision-engineered directional control valve designed for reliable switching and control of compressed air in industrial pneumatic systems. Manufactured by Emerson ASCO, a global authority in automation and fluid control, this spool valve series is built for high cycle life, fast response, and consistent performance in demanding operating environments.
The 551–553 series features a robust air-operated spool valve design with an internal sliding spool mechanism that ensures accurate port alignment, low internal leakage, and smooth directional switching. These valves are typically pilot-operated by air or solenoid valve actuation, making them ideal for integration into automated control systems and PLC-driven machinery. The durable metal body construction provides excellent resistance to vibration, pressure fluctuations, and industrial contaminants.
Key Advantages
Typical Applications
The Emerson ASCO 551–553 air-operated spool valve is widely used in:
These valves are well suited for applications requiring frequent cycling, precise directional control, and dependable performance in continuous-duty environments.
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| Parts | Function | Connection | Flow factor / flow coefficient | Weight | Flow max | Short circuit protection | Manual operation | Price | ||
|---|---|---|---|---|---|---|---|---|---|---|
G553A117…5/2 Air / Spring Return, G 1/2", 0-10 bar, 52.5, NBR & PUR
Art:
G553A117
Copied
|
5/2, Air-Controlled With Spring Return
|
G1/2
|
52.5 Kv
|
1.24 kg
|
3800 l/min
|
|
|
| ||
|
G553A118…5/2 Air / Air Return, G 1/2", 0-10 bar, 52.5, NBR & PUR
Art:
G553A118
Copied
|
5/2, Air-Controlled With Air Return
|
G1/2
|
52.5 Kv
|
1.24 kg
|
3800 l/min
|
|
|
| ||
G551A117…5/2 Air / Spring Return, G 1/4", 0-10 bar, 12.5, NBR & PUR
Art:
G551A117
Copied
|
5/2, Air-Controlled With Spring Return
|
G1/4
|
12.5 Kv
|
0.43 kg
|
860 l/min
|
No
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No
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G551A118…5/2 Air / Air Return, G 1/4", 0-10 bar, 12.5, NBR & PUR
Art:
G551A118
Copied
|
5/2, Air-Controlled With Air Return
|
G1/4
|
12.5 Kv
|
0.43 kg
|
860 l/min
|
No
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No
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