ASCO SCG551A002MS 551 Series 8551 Series General Purpose solenoid valve

The ASCO SCG551A002MS is a high-performance solenoid valve designed for critical control of air, gas, or liquid media in industrial applications. Belonging to the 551 Series (and part of the broader 8551 Series), it is renowned for its reliability, fast response times, and versatility in demanding environments.

Key Features

Design & Construction

Body Material: Durable aluminum or stainless steel (model-dependent) for corrosion resistance.

3/2 or 5/2 Way Configuration: Supports single or double solenoid actuation (e.g., normally closed, normally open, or bi-stable).

Poppet or Spool Design: Ensures low leakage and high flow capacity.

Functional Specifications

Voltage Options: AC (120V, 230V) or DC (24V) coils with surge suppression.

Port Size: 1/2" NPT or G (SCG551A002MS specific) for high-flow applications.

Pilot or Direct-Acting: Depends on pressure range; suitable for both low and high-pressure systems.

Performance

Pressure Range: 0-150 psi (0-10 bar) for air/gas; liquid pressure varies by media.

Temperature Range: -20°C to 80°C (standard); extended ranges with special seals.

Cycle Life: Over 10 million cycles for long-term durability.

Certifications

CE, UL, CSA, ATEX (for explosive environments), and ISO 15552 compliant (model-specific).

Applications

Pneumatic Systems: Control of air-powered actuators, cylinders, and valves in manufacturing.

Process Control: Chemical, petrochemical, and pharmaceutical industries.

Automation: Robotics, packaging machinery, and conveyor systems.

HVAC/R: Large-scale air conditioning and refrigeration systems.

Technical Data (Typical)

Parameter Specification

Valve Type 5/2 Way, Normally Closed (NC)

Port Size 1/2" NPT (SCG551A002MS)

Flow Rate (Cv) ~4.5 (high flow for 1/2" port)

Power Consumption ~7W (AC); ~4W (DC)

Response Time <30ms (opening/closing)