The Asco 8220G029 Solenoid Valve (8220G29) is a pilot-operated, normally closed valve built for high-temperature, high-flow control in industrial hot water and steam systems. Its rugged brass construction, heat-rated coil, and consistent actuation make it a dependable choice for demanding rinse, sterilization, and heating cycles. Once opened at higher pressure, the valve will remain open to 3 psi at the inlet.
Technical Specifications
- Valve Type: Pilot Operated, Normally Closed, 2-Way
- Pipe Size: 1 1/2″ NPT
- Flow Factor (Cv): 22.5
- Operating Pressure Differential:
- Steam: 5 to 125 psi
- Hot Water: 5 to 150 psi
- Maximum Fluid Temperature:
- Steam: 353°F (178°C)
- Hot Water: 210°F (99°C)
- Body Material: Brass
- Seal Material: EPDM or PTFE
- Voltage Options:
- AC: 24, 120, 240, 480 V
- DC: 6, 12, 24, 120, 240 V
- Watt Rating:
- AC: 10.1 watts
- Coil Insulation Class: H
- Solenoid Enclosure:
- Standard: RedHat II – Watertight, Types 1, 2, 3, 3S, 4, and 4X
- Optional: Explosionproof & Watertight, Types 3, 3S, 4, 4X, 6, 6P, 7, and 9
Key Features and Functionality
- High-Volume Flow: Ideal for large-capacity thermal systems.
- Steam and Hot Water Service: Designed for demanding applications.
- Resilient Coil Design: Designed for use in elevated temperature environments.
- Brass Construction: Durable and corrosion-resistant under thermal stress.
- Hold-Open Performance: The valve remains open down to 3 psi after activation.
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
- Boiler Systems: Controls inlet or blowdown flow.
- Sterilizers and Autoclaves: Support temperature-regulated pressure control.
- Process Water Heating: Enables fast cycling and dependable shutoff.
- Commercial Rinse Equipment: Maintains stable hot water delivery.
- Food Processing Utilities: Operates reliably through frequent steam cycling.
Compliance and Approvals
- UL Listed
- CSA Certified
- Meets Applicable CE Directives
Installation and Operational Notes
- Confirm the coil voltage matches your power source.
- Depressurize the system before installing or servicing the valve.
- Use a fine strainer upstream to block debris and contaminants.
- Align pipes carefully to avoid straining the valve body.
- Apply power and listen for a click to confirm solenoid actuation.
Series Catalog
Asco Hot Water and Steam Valves Two Way
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