ASCO G551A001 MS

ASCO Pneumatic Spool Valve 5/2 – 3/2 G1/4 G551A001 MS

Description

The ASCO G551A001 MS is a high-performance pneumatic spool valve from the renowned 551 series. This body-ported valve offers excellent flexibility, allowing for configuration as either a 5/2 or 3/2 monostable (spring return) valve. It is designed for controlling air or neutral gas in a wide range of industrial automation applications. Its robust construction ensures a long service life and reliable operation even in demanding environments.

Specifications

• Manufacturer: ASCO
• Series: 551
• Model: G551A001 MS
• Function: 5/2 or 3/2 Monostable, Spring Return
• Port Connection: G1/4
• Maximum Operating Pressure: 10 bar
• Actuation: Air Operated with manual override
• Body Material: Anodized Aluminium

Label Info

• Brand: ASCO
• Model: G551A001 MS
• Series: 551
• P.max: 10bar

Application

This valve is ideally suited for controlling double-acting and single-acting pneumatic actuators, such as cylinders. It is commonly used in packaging machinery, material handling systems, automotive manufacturing, and general industrial automation where reliable pneumatic control is essential.

Country of Origin

This product is typically manufactured in France.

CO2 Impact

Reusing this component saves approximately 3.0 kg of CO2, contributing to a more sustainable operation by avoiding the production of a new part.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

How do I switch this valve from 5/2 to 3/2 operation?

The 551 series valves can be converted by repositioning a gasket on the valve body. You need to open the valve body and move the specific gasket to block the correct internal port, as shown in the manufacturer’s installation manual.

What is the flow rate (Kv or Cv) of the G551A001 MS?

The G551A001 MS with G1/4 ports has a nominal flow rate of approximately 700 l/min (ANR), which corresponds to a Kv value of around 0.75. Always consult the official ASCO/Emerson datasheet for precise performance curves.

Can I mount a solenoid coil directly on this valve?

This specific model, G551A001 MS, is an air-piloted valve with a spring return and a manual override. To use a solenoid, you would need the corresponding solenoid-piloted version from the 551 series, which includes the solenoid operator assembly. This body is not designed for direct coil mounting.

Last Update: Friday, March 13, 2026

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