Asco 8220G031 Solenoid Valve 8220G31

The Asco 8220G031 Solenoid Valve (8220G31) is a heavy-duty, pilot-operated valve designed for continuous steam and hot water flow in large industrial systems. With enhanced thermal resistance and flow handling, it is built for equipment that demands steady, high-volume delivery. 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: 2″ NPT
• Flow Factor (Cv): 43.0
• 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-Temperature Tolerance: Suitable for continuous steam and hot water service.
• Large Flow Capacity: Built to move high volumes with minimal restriction.
• Class H Coil Insulation: Designed for long-term thermal endurance.
• Pilot Operated Performance: Reliable operation under demanding conditions.
• Corrosion-Resistant Construction: Brass body withstands harsh fluid environments.

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 steam output or hot water return lines.
• Sterilizers and Autoclaves: This facilitates the flow of heat and pressure cycles.
• Process Heating Equipment: Regulates media to temperature-controlled units.
• Industrial Rinse Lines: Delivers high-temperature water to spray systems.
• Steam Distribution Loops: Maintains flow to branch or zone connections.

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.