ASCO
Emerson Asco Solenoid Valve Series 551-553 Air Operated G551A117
Air Operated Spool Valve
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
- Proven Emerson ASCO spool valve reliability
- Fast switching for high-speed automation
- Long service life with minimal maintenance
- Low friction internal spool for smooth operation
- Compatible with solenoid valve pilots and air-actuated controls
- Compact footprint with flexible mounting options
Typical Applications
The Emerson ASCO 551–553 air-operated spool valve is widely used in:
- Pneumatic automation systems
- Packaging and bottling machinery
- Material handling and conveyor systems
- Process automation in manufacturing plants
- Robotic and assembly line equipment
- General industrial compressed air control
These valves are well suited for applications requiring frequent cycling, precise directional control, and dependable performance in continuous-duty environments.
- 5/2, Air Pilot & Return or Air Pilot & Spring Return
- G 1/4", G 1/2"
- Non breathing, full protection against ingress of liquids and dust
- Air or neutral gas, filtered, lubricated or not
- Operating Pressure Differential: 10 Bar
Selected variant
Technical data
General Data |
|
|---|---|
| Function | 5/2, Air-Controlled With Spring Return |
| Connection | G1/4 |
| Operating Pressure Differential | 0-10 bar |
| Flow factor / flow coefficient | 12.5 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 |
*Invisible Heading* |
|
|---|---|
| Temperature ambient to | 60 °C |
Additional Data |
|
| Approvals | IEC, TÜV |
| Weight | 0.43 kg |
| Type of valve | Air controlled |
| Short circuit protection | No |
| Pilot pressure | 2-10 bar |
| Flow max | 860 l/min |
| Manual operation | No |
Product description
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
- Proven Emerson ASCO spool valve reliability
- Fast switching for high-speed automation
- Long service life with minimal maintenance
- Low friction internal spool for smooth operation
- Compatible with solenoid valve pilots and air-actuated controls
- Compact footprint with flexible mounting options
Typical Applications
The Emerson ASCO 551–553 air-operated spool valve is widely used in:
- Pneumatic automation systems
- Packaging and bottling machinery
- Material handling and conveyor systems
- Process automation in manufacturing plants
- Robotic and assembly line equipment
- General industrial compressed air control
These valves are well suited for applications requiring frequent cycling, precise directional control, and dependable performance in continuous-duty environments.
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