ASCO 8221G3-208V Solenoid Valve

The ASCO 8221G3-208V Solenoid Valve is a high-performance 2-way normally closed solution specifically engineered for reliable water service. This pilot operated solenoid valve features ASCO's signature slow closing technology, which integrates a specialized snubber to reduce the closing speed of the disc. This critical design feature effectively eliminates water hammer and pressure spikes, protecting downstream plumbing and industrial components from mechanical stress without the need for additional suppressors. Built with a rugged brass body and high-grade NBR seals, the 1/2" NPT valve is rated for a 3.5 Cv flow capacity and operates within a pressure range of 5-150 PSI. Its 208Vac electrical configuration and Nema 4 enclosure make it an ideal choice for washdown environments and demanding industrial process systems.

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• Anti-Water Hammer Design: Specialized slow close mechanism mitigates system-damaging pressure surges.
• Industrial Durability: Robust brass body and NBR seals ensure long-term compatibility with water and light oil.
• Watertight Protection: Standard Nema 4 enclosure provides superior resistance against dust and moisture ingress.
• High Flow Efficiency: A 3.5 Cv flow coefficient maintains optimal throughput for critical HVACR and plumbing applications.

What causes this valve to remain closed during startup?
This is a pilot operated valve requiring a minimum operating pressure differential of 5 PSI to function correctly. Ensure your system meets this threshold to facilitate the opening of the main orifice.

Can the 8221G3 be used for steam applications?
The ASCO 8221G3-208V is specifically optimized for cold and hot water service up to 180°F. For high-temperature steam requirements, a different seal material and series would be necessary.

What does '2-way normally closed' signify in this context?
In its de-energized state, the solenoid valve remains closed, preventing flow. Once 208Vac power is applied to the coil, the pilot opens, allowing the main disc to lift and fluid to pass.

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.