Emerson Alco 030621 Solenoid Valve

The Emerson Alco 030621 Solenoid Valve (model 210CA3/4B3/4B) is a heavy-duty, pilot operated industrial solenoid valve engineered for consistent fluid control in high-demand HVACR and pneumatic systems. This 2-way normally closed solenoid valve features a robust bronze body and a durable Buna-N diaphragm, making it ideal for managing air and water media at temperatures up to 180°F. With a 3/4 inch NPT connection and a high flow coefficient (Cv) of 5.5, this valve provides significant throughput with minimal pressure drop across the seat.

Designed for industrial-grade reliability, the Emerson 210CA series utilizes a pilot-operated mechanism that requires a minimum differential pressure to ensure full port opening. The 0-125 PSI operating pressure range and the stainless steel enclosing tube assembly provide high resistance to mechanical fatigue and corrosion. This unit is shipped as a Valve Less Coil (VLC), allowing for flexible integration with various standard Emerson AC or DC coils depending on your specific field power requirements. Professionals choose the 030621 Alco valve for its captive diaphragm design, which simplifies teardown and internal maintenance during routine service intervals.

• High Flow Capacity: The 5.5 Cv rating ensures efficient volume delivery for 3/4" pipe sizes in liquid or gas lines.
• Industrial Durability: Constructed with a brass/bronze valve body and stainless steel internals for long-term service life in harsh environments.
• Simplified Maintenance: Features a captive diaphragm and seal that stays intact during inspection, preventing lost parts in the field.
• Versatile Media Compatibility: Rated for air, inert gases, and water, meeting UL/CUL (file MP604) standards for industrial safety.

Is the coil included with this valve body?
No, the Emerson 030621 is a VLC (Valve Less Coil) model. You must select and install a compatible Emerson 12-watt AC or DC coil to match your system voltage.

What is the maximum fluid temperature for this valve?
The standard Buna-N elastomer in this 210CA series valve is rated for a maximum fluid temperature of 180°F.

Can this valve be mounted in any orientation?
While the 210CA3/4B3/4B can technically be mounted in various positions, it is best practice to install it with the solenoid upright to prevent sediment buildup in the enclosing tube.

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.