Emerson Alco 030627 Solenoid Valve

The Emerson Alco 030627 (211CA3/4B3/4B) is a rugged, 2-way normally closed solenoid valve designed for high-performance industrial air and water applications. Featuring a 3/4" NPT connection and a robust direct-acting valve body, this unit provides reliable flow control even in low-pressure systems, operating effectively from 0 to 100 PSI. Built for longevity in demanding environments, it delivers a high flow coefficient of 5.5 Cv, ensuring minimal pressure drop across the seat. This industrial solenoid valve is an essential component for contractors requiring precise fluid management in HVACR or process piping. The direct-acting design eliminates the need for a minimum pressure differential, making it highly versatile for gravity-fed or closed-loop cycles where normally closed solenoid operation is required for fail-safe security.

Technical Benefits for Contractors

• Direct-Acting Operation: Functions reliably at zero pressure differential, ideal for low-pressure air and water circuits.
• High Flow Capacity: The 5.5 Cv rating ensures efficient throughput and reduces turbulence within 3/4" piping systems.
• Durable Construction: Engineered for industrial-grade cycles, providing a long service life in commercial HVACR environments.
• NPT Compatibility: Standard 3/4 inch NPT threading allows for seamless integration with existing rigid or flexible piping.

Common Installation Questions

Can the Emerson 030627 be used for steam applications?
This specific model is rated for air and water up to 100 PSI; for high-temperature steam applications, verify seal compatibility with the manufacturer’s chemical resistance chart.

Does this valve require a minimum PSI to open?
No, as a direct-acting valve, the 211CA3/4B3/4B opens mechanically via the solenoid coil force rather than relying on line pressure.

What is the fail-safe position for this solenoid?
This is a normally closed (NC) valve, meaning it will remain in the closed position to prevent flow upon loss of electrical power.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.