ASCO 8221G23 Solenoid Valve

The ASCO 8221G23 Solenoid Valve is a high-performance 2-way normally open solenoid valve specifically engineered for reliable fluid control in water service applications. This pilot operated solenoid valve features a 1/2-inch NPT connection and a robust brass body, ensuring durability in demanding HVACR environments. Designed with an internal snubber, the slow closing solenoid valve effectively eliminates water hammer, protecting your piping system from destructive pressure surges. Operating on a 120V AC power supply, it offers a 3.5 Cv flow coefficient and handles a pressure range of 5-150 PSI. The NBR seals provide excellent chemical resistance for clear water, while the NEMA 4 enclosure ensures watertight protection for the internal components. This ASCO RedHat series component is the industry standard for water pilot operated systems requiring consistent, soft-closing performance.

Key Benefits:

• Eliminates Water Hammer: The integrated pilot-operated slow-closing mechanism prevents system damage caused by sudden pressure spikes.
• Industrial Durability: Forged brass body and NBR (Nitrile) seals ensure long-lasting performance in water and light liquid applications.
• High Flow Efficiency: A 3.5 Cv rating and 9/16-inch orifice maximize throughput for medium-demand fluid systems.
• Environmental Protection: The NEMA 4 enclosure provides a watertight seal, suitable for indoor and outdoor installations.
• Normally Open Configuration: Maintains fluid flow during power loss, serving as a critical fail-safe in specific process automation cycles.

Common Questions:

How does the slow-closing feature work on the ASCO 8221G23?
This valve utilizes a special internal snubber that controls the displacement of the pilot orifice, causing the main disc to close gradually. This prevents the "knock" or water hammer often associated with fast-acting valves in water lines.

What is the minimum pressure required for this valve to operate?
As a pilot operated valve, the ASCO 8221G23 requires a minimum pressure differential of 5 PSI to function correctly. It can maintain its position with as little as 3 PSI once fully engaged.

Can this valve be used for hot water applications?
Yes, this model is rated for fluid temperatures up to 180°F, making it suitable for general service and standard hot water loops in HVACR systems.

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.