The Asco EF8025B220 Solenoid Valve is a steam-rated, explosionproof control solution designed for high-temperature shutoff protection.The Latched Closed, No Voltage Release operation keeps the valve closed under power and opens only when power is lost. Its brass body and PTFE seal withstand extreme heat, ensuring secure restart control in pressurized steam lines.
For Standard Enclosure: Asco 8025B220 Solenoid Valve
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 3/4″
- Flow Factor (Cv): 7.8
- Operating Pressure Differential:
- Steam: 5 to 125 psi
- Maximum Fluid Temperature:
- AC: 353°F (178°C)
- DC: 353°F (178°C)
- Body Material: Brass
- Seal Material: PTFE Disc with EPDM, FPM, and PTFE Seals
- Voltage Options:
- AC (60Hz): 24, 120, 240, 480V
- DC: 6, 12, 24, 120, 240V
- Watt Rating:
- AC: 20 watts
- DC: 36.2 watts
- Coil Insulation Class: F (AC), H (DC)
- Solenoid Enclosure:
- Explosionproof and Watertight, Types 3, 7(C and D), and 9
Key Features and Functionality
- Explosionproof Steam Control: Built for classified, high-temperature systems.
- Fails Open On Power Loss: Restores flow automatically upon de-energization.
- Trip-Safe Manual Reset Design: Requires reset to re-establish steam flow.
- Temperature-Resistant Seal Stack: Handles continuous 353°F steam exposure.
- Install Without Orientation Limits: Works effectively in any mounting position.
Compatible Components and Related Parts
- ASCO RedHat II Coil Series
- ASCO Manual Reset Lever Kits
- ASCO Seal Kit for 8025 Series
- ASCO Explosionproof Solenoid Enclosure
Industry Applications
- Steam Jacketed Vessels: Trips open for safety venting after power loss.
- Sterilization Loops: Enables restart control in heated process circuits.
- Autoclave Systems: Provides reliable trip-open flow during shutdown.
- Pressurized Heating Lines: Releases pressure when control signal drops.
- Steam Trap Bypass Paths: Opens up controlled discharge under fault conditions.
Compliance and Approvals
- UL Listed
- CSA Certified
- CE Compliant
- Explosionproof and Watertight, Types 3, 3S, 4, 4X, 6, 6P, 7, and 9
- Explosionproof and Raintight, Types 3, 7, and 9
Installation and Operational Notes
- Mount in any position per steam line routing.
- Manual reset is required after trip events.
- Use explosionproof conduit/fittings in classified zones.
- Ensure correct voltage and coil class prior to energization.
- Suitable for steam only (not for air, oil, or water).
Series Catalog
Asco 8015/8025 Manual Reset Valves
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