The Asco 8220G403 Solenoid Valve is a pilot-operated, normally closed valve engineered for dependable service in high-temperature steam and hot water lines. With Class H insulation on both AC and DC coils, it is ideal for continuous thermal cycling in sterilizers, food prep equipment, and automated rinse systems.
Technical Specifications
- Valve Type: Pilot Operated, Normally Closed, 2-Way
- Pipe Size: 3/8″ NPT
- Flow Factor (Cv): 4.4
- 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/H watts
- DC: 15.6/H watts
- 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 H Coil: Withstands extreme thermal cycling conditions.
- Pilot-Operated Construction: Stable flow under varying load demands.
- Steam-Compatible Build: Rated for saturated steam service.
- Wide Voltage Range: Supports standard AC and DC supply options.
- Brass Body Design: Corrosion-resistant for high-temperature fluids.
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 Equipment: Controls steam delivery to chamber systems.
- Dishwashing Systems: Regulates rinse water and drain cycles.
- Laundry Machinery: Handles hot water feed to heat zones.
- Autoclaves and Heaters: Directs pressurized thermal media safely.
- Food Service Boilers: Maintains temperature in steam prep lines.
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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