The Asco 8220G404 Solenoid Valve is a pilot-operated, normally closed valve built for high-temperature steam and hot water control. Its compact brass construction, high Cv flow, and Class F insulation make it ideal for automated heating systems, dishwashing equipment, and sterilization processes that demand durability and reliability.
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 50 psi
- Hot Water: 5 to 150 psi
- Maximum Fluid Temperature
- AC Steam: 300°F (149°C)
- AC 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: 6.1 watts
- Coil Insulation Class: F
- Solenoid Enclosure:
- Standard: NEMA 4X, IP65 (Watertight, Corrosion-Resistant)
- Optional: Explosionproof & Watertight (Types 3-9), Raintight (Types 3, 7, 9)
Key Features and Functionality
- Class F Insulation: Supports thermal cycling and extended coil life.
- Pilot-Operated Design: Maintains consistent flow at low differential.
- Steam-Approved Valve: Suitable for high-temperature vapor lines.
- High Cv Performance: Supports larger flow volumes at 1/2″ size.
- Brass Body Build: Durable for water and thermal fluid systems.
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
- Food Processing Units: Distributes steam for cleaning and heating purposes.
- Dishwashers and Rinse Lines: Activates hot water inlet or flush.
- Sterilizers and Autoclaves: Maintains thermal chamber cycling.
- Industrial Heating Systems: Controls pressurized hot water loops.
- Laundry Equipment: Directs steam into press and folder units.
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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