Emerson Alco 039917 Solenoid Valve

The Emerson Alco 039917 Solenoid Valve (model 222CB1/2B1/2B) is a heavy-duty 2-way normally closed valve built for industrial-grade fluid control. Featuring a 1/2 inch NPT connection and a robust forged brass valve body, this unit is engineered to handle rigorous 0-250 PSI air and water applications without internal leakage. With a 3.5 Cv flow coefficient, it provides the high-capacity throughput required for pilot-operated systems in demanding HVACR and process environments. The industrial solenoid brass valve construction ensures structural integrity under high pressure, while the normally closed configuration provides a reliable fail-safe for critical line isolation. Designed for a maximum working pressure of 300 PSI in some configurations, this valve utilizes EPDM seals and stainless steel internal components to maintain a tight shut-off and resist corrosion. Field technicians prefer the 222CB series for its simplified maintenance, as valve repair kits are readily available to extend the service life of the brass steam valve and liquid control assemblies.

• High Flow Performance: The 3.5 Cv rating ensures minimal pressure drop across the 1/2" orifice for efficient liquid and gas transfer.
• Rugged Brass Construction: Forged brass body with stainless steel enclosing tubes provides superior resistance to mechanical stress and environmental wear.
• Versatile Media Compatibility: Rated for air, water, and low-pressure steam, making it a versatile choice for multi-purpose industrial piping.
• Standardized Fit: 1/2 inch NPT ports allow for seamless integration into existing threaded pipe schedules common in North American HVACR systems.
• Reliable Fail-Safe: The normally closed (NC) design ensures the valve remains sealed during power loss, protecting downstream equipment.

What is the maximum pressure differential for the 039917 valve?
This valve is rated for a maximum operating pressure differential (MOPD) of 250 PSI for air and water applications, ensuring reliable opening and closing cycles under full load.

Can this valve be mounted in any orientation?
While the Emerson Alco solenoids are designed for flexible installation, it is best practice to mount the valve with the coil upright to prevent the accumulation of scale or debris in the plunger tube.

Are repair internal components available for this model?
Yes, the 222CB series is fully serviceable. Professionals can utilize standard Emerson repair kits to replace the diaphragm, springs, and seals without removing the brass body from the piping.

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.