The Asco 8220G027 Solenoid Valve (8220G27) is a pilot-operated, normally closed valve engineered for high-demand thermal systems. It features an EPDM/PTFE sealing disc and a heat-resistant Class H coil for durability in steam and hot water service. 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 1/4″ NPT
- Flow Factor (Cv): 15.0
- 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 Flow Output: Built for large-volume system performance.
- Seal & Disc Reliability: Resistant to heat and chemical wear.
- Steam-Ready Coil: Class H insulation for extreme thermal environments.
- Durable Brass Body: Resists corrosion and mechanical fatigue.
- Stable Hold-Open Design: Remains open down to 3 psi after actuation.
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 and Heating Lines: Used for high-volume outlet or return flow.
- Steam-Powered Cleaning Equipment: Maintains consistent thermal output.
- Food Equipment Steam Supply: Controls pressure in cooking or sterilization.
- High-Volume Dishwashers: Delivers heated rinse cycles on demand.
- Process Plant Utility Rooms: Regulates the delivery of pressurized hot water.
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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