The Asco 8220G406 Solenoid Valve is a pilot-operated, normally closed valve rated for steam service up to 353°F, the highest AC steam temperature in the series. With Class H insulation on both AC and DC coils and elevated pressure capabilities, it is ideal for demanding thermal environments, such as autoclaves, dishwashers, and high-pressure cleaning systems.
Technical Specifications
- Valve Type: Pilot Operated, Normally Closed, 2-Way
- Pipe Size: 1/2″ NPT
- Flow Factor (Cv): 4.7
- Operating Pressure Differential
- Steam: 5 to 125 psi (AC), 5 to 110 psi (DC)
- Hot Water: 5 to 150 psi (AC), 5 to 150 psi (DC)
- Maximum Fluid Temperature
- AC Steam: 353°F (178°C)
- AC Hot Water: 210°F (99°C)
- DC Steam: 344°F (173°C)
- DC Hot Water: 210°F (99°C)
- Body Material: Brass
- Seal Material: EPDM, PTFE, or TFE/P
- Voltage Options:
- AC: 24, 120, 240, 480, 110V
- DC: 6, 12, 24, 120, 240V
- Watt Rating:
- AC: 10.1 watts
- DC: 15.6 watts
- Coil Insulation Class:
- AC: H
- DC: H
- Solenoid Enclosure:
- Standard: NEMA 4X, IP65 (Watertight, Corrosion-Resistant)
- Optional: Explosionproof & Watertight (Types 3-9), Raintight (Types 3, 7, 9)
Key Features and Functionality
- High-Temperature Service: Designed for sustained steam and hot water cycles.
- Dual-Coil Configuration: Compatible with both AC and DC power sources.
- Heavy-Duty Sealing: Withstands thermal and pressure fluctuations.
- Reliable Pressure Response: Performs under elevated inlet conditions.
- Industrial-Grade Insulation: Class H windings resist coil overheating.
Compatible Components and Related Parts
- ASCO RedHat II Coil Series
- ASCO Mounting Brackets
- ASCO Seal Kit for 8220 Series
- ASCO Explosionproof Solenoid Enclosure
Industry Applications
- Sterilization Chambers: Delivers consistent high-temp inlet steam.
- Industrial Dish Systems: Controls high-pressure steam entry.
- Laundry Steam Lines: Handles feed for pressing and drying stations.
- Autoclaves and Boilers: Manages thermal cycling under pressure.
- Washdown Systems: Provides steam to sanitize food zones.
Compliance and Approvals
- UL Listed
- CSA Certified
- CE Compliant
Installation and Operational Notes
- Use the correct coil voltage before energizing.
- Always depressurize lines before installing the valve.
- Install a strainer upstream near the valve inlet.
- Avoid misalignment or pipe strain on the valve body.
- Energize the coil to confirm solenoid actuation with an audible click.
Series Catalog
Asco Hot Water and Steam Valves Two Way
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