ASCO 8220G401 Solenoid Valve

The ASCO 8220G401 Solenoid Valve is a high-performance, internal pilot-operated solenoid valve designed specifically for the demanding requirements of steam and hot water applications. Engineered with a durable forged brass body and a rugged EPDM diaphragm, this 2-way normally closed valve provides reliable fluid control in industrial environments like laundries, autoclaves, and boilers. With a 3/8" NPT connection and a 4.4 Cv flow coefficient, it handles steam pressures from 5–50 PSI and hot water up to 150 PSI. The 120Vac solenoid is housed in a NEMA 4X enclosure, ensuring superior protection against corrosion and environmental elements. This ASCO RedHat series valve is optimized for longevity, featuring a floating PTFE diaphragm that significantly extends service life compared to standard alternatives. Whether managing high-temperature media or requiring a normally closed solenoid valve for fail-safe operation, this unit delivers the precision and "zero-differential" performance needed for critical HVACR and process systems.

Key Benefits of the ASCO 8220G401

• Dual-Media Versatility: Specialized design allows a single valve to manage both steam (up to 300°F) and hot water (up to 210°F), simplifying inventory.
• Enhanced Durability: The floating diaphragm design reduces wear, potentially lasting up to four times longer than competitive models in high-cycle applications.
• Weatherproof Reliability: The NEMA 4X rated enclosure provides watertight and corrosion-resistant protection for the electrical components.
• Maintenance Efficiency: A threaded bonnet design allows for quick inspection and internal cleaning without removing the entire valve body from the line.
• High Flow Efficiency: Delivers a 4.4 Cv rating, providing up to 60% more flow capacity than typical competitor 3/8" valves.

Common Questions About This Solenoid Valve

What is the difference between NEMA 4 and NEMA 4X for this valve?
While both offer protection against dust and water ingress, the NEMA 4X enclosure on the 8220G401 provides additional protection against corrosion, making it ideal for harsh chemical or coastal environments.

Can this valve be used for potable water systems?
No, this specific brass construction is restricted from conveying water intended for human consumption (potable use) and is intended for industrial hot water and steam service.

Does this valve require a minimum pressure to operate?
Yes, as a pilot-operated valve, it generally requires a minimum operating pressure differential (typically 5 PSI) to open and close effectively, though it is designed to operate quietly even at low pressures.

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.