Emerson Alco 030737 Solenoid Valve

The Emerson Alco 204CD1/4B1/4B (Part Number 030737) is a heavy-duty, 2-way normally closed solenoid valve designed for low-pressure fluid control in industrial HVACR and process applications. Featuring a robust brass valve body and 1/4" NPT connections, this direct-acting valve provides a 0.70 Cv flow coefficient, making it ideal for precision air and water regulation. Engineered for versatility, it supports 0-20 PSI operations with AC voltage and 0-10 PSI for DC configurations. This industrial solenoid valve is commonly utilized in pilot control, pneumatic systems, and liquid line service where bubble-tight shut-off is required. Its compact profile allows for easy integration into tight mechanical skids, while the industrial-grade coil construction ensures reliable performance under continuous duty cycles. For technicians troubleshooting flow issues, the Emerson 030737 serves as a direct professional-grade replacement for standard 1/4" NPT solenoid valves requiring low pressure differentials.

• Optimized Flow: The 0.70 Cv rating ensures consistent throughput for air and water applications.
• Durable Construction: High-grade brass body resists corrosion and maintains structural integrity in demanding environments.
• Direct Acting Design: Provides reliable operation without requiring a minimum pressure differential to open.
• Dual Voltage Compatibility: Engineered to handle varying pressure ranges (10-20 PSI) depending on AC or DC power supply.
• Secure Porting: Standard 1/4" NPT threading facilitates leak-free installation with common hardware.

What is the maximum pressure for the Emerson 030737 in DC systems?
When utilizing DC voltage, the maximum operating pressure differential for air and water is 10 PSI. For AC voltage applications, this increases to 20 PSI.

Is this valve suitable for steam applications?
The 204CD1/4B1/4B is primarily rated for air and water. For high-temperature steam applications, verify seal compatibility and temperature ratings found in the Alco technical bulletin.

What is the default state of this solenoid valve?
This is a normally closed valve, meaning it remains shut until the coil is energized, providing a fail-safe closed position for the circuit.

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.