Asco 8220G025 Solenoid Valve 8220G25

The Asco 8220G025 Solenoid Valve (8220G25) is a pilot-operated, normally closed valve engineered for reliable high-temperature control in steam and hot water systems. With a high flow Coefficient of 13.5 and a Class H coil, it’s ideal for demanding applications. 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″ NPT
• Flow Factor (Cv): 13.5
• 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

• Handles Extreme Temperatures: Capable of operating at steam temperatures up to 353°F.
• High Flow Capacity: Features a flow coefficient of 13.5 Cv, suitable for large system loads.
• EPDM/PTFE Sealing Disc: Ensures reliable performance even under thermal stress.
• Heavy-Duty Coil: Equipped with Class H insulation to resist heat buildup.
• Flexible Utility: Suitable for both hot water and steam applications.

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 return or output pressure.
• Autoclaves: Manages high-temperature, pressurized flow.
• Food Processing Lines: Delivers consistent thermal control.
• Steam Heating Units: Regulates thermal output for load-bearing applications.
• Commercial Dishwashers: Ensures high-temperature rinse cycles.

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.