ASCO 8221G25 Solenoid Valve

The ASCO 8221G25 is a high-performance 2-way normally open solenoid valve specifically engineered for reliable fluid control in commercial and industrial water systems. Featuring a 3/4" NPT connection and a robust brass body, this pilot-operated valve is designed with a specialized slow-closing mechanism. This internal snubber technology effectively eliminates water hammer, protecting your piping infrastructure from destructive pressure surges without the need for additional surge suppressors. Equipped with a 120Vac coil and durable NBR seals, the 8221G25 delivers a high flow coefficient of 5.5 Cv while operating within a pressure range of 5-150 PSI. The NEMA 4 enclosure ensures watertight protection, making it ideal for demanding HVACR and industrial water-handling applications where precision and durability are non-negotiable.

Key Benefits

• Anti-Water Hammer Design: The slow-closing feature prevents pipe vibration and damage caused by sudden valve shut-off.
• Industrial Grade Construction: Forged brass body and NBR (Nitrile) seals provide excellent compatibility with water service.
• High Flow Capacity: A 5.5 Cv rating ensures efficient movement of large volumes of fluid with minimal pressure drop.
• Environmental Protection: The NEMA 4 watertight enclosure protects electrical components from dust and water ingress.
• Reliable Operation: Rated for fluid temperatures up to 180°F, making it suitable for a variety of process cooling and heating loops.

Common Questions

What is the minimum pressure required for this valve to operate?
As a pilot-operated valve, the ASCO 8221G25 requires a minimum 5 PSI differential to open and maintain steady flow performance.

Can this valve be used for drinking water?
This specific brass body solenoid valve is intended for industrial water control and is not certified for potable (drinking) water systems under the Safe Water Drinking Act.

How does the "normally open" function work?
In a normally open (N/O) configuration, the valve allows flow when de-energized and closes only when the 120V AC coil receives 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.