ASCO 8221G1 Valve

The ASCO 8221G1 is a high-performance 2-way normally closed solenoid valve specifically engineered for water service applications requiring precision control. This 3/8" NPT water solenoid valve features a pilot operated diaphragm design with a specialized slow closing mechanism, which effectively eliminates the damaging effects of water hammer in pressurized piping systems. Constructed with a rugged brass body and durable NBR seals, it provides reliable 120Vac operation across a pressure range of 5-150 PSI. With a 3 Cv flow factor and a NEMA 4 enclosure, this assembly is built for demanding environments, ensuring watertight and dust-tight protection for internal components. Whether integrated into industrial cooling systems or commercial irrigation, the ASCO 8210 series evolution found in this model delivers consistent flow management and longevity.

• Anti-Water Hammer Design: The slow-closing feature protects your plumbing infrastructure by reducing pressure spikes.
• Industrial Durability: Robust brass construction and NBR elastomers provide excellent chemical compatibility with water.
• Environmental Protection: The NEMA 4 rated housing allows for safe operation in washdown or outdoor environments.
• High Flow Efficiency: A 3 Cv rating ensures high-volume throughput for a compact 3/8" footprint.

What prevents water hammer in this valve?
The ASCO 8221G1 utilizes a pilot-operated diaphragm with a controlled closing speed to prevent the shockwaves associated with rapid valve shut-off.

Can this valve be used for air or oil?
This specific model is optimized for water service; using it with other media may affect the slow-closing timing or seal integrity.

Does it require a minimum pressure to operate?
Yes, as a pilot-operated valve, it requires a minimum differential pressure of 5 PSI to function correctly.

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.