The Asco EF8025B204 Solenoid Valve is a high-capacity, explosionproof valve featuring a No Voltage Release configuration. It remains latched open when powered and trips closed upon power loss, providing secure flow control for air, inert gas, water, and light oil systems.
For Standard Enclosure: Asco 8025B204 Solenoid Valve
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Open
- Pipe Size: 1 1/2″ NPT
- Flow Factor (Cv): 22.5
- Operating Pressure Differential:
- Air/Inert Gas: 5 to 125 psi
- Water: 5 to 125 psi
- Light Oil: 5 to 125 psi
- Maximum Fluid Temperature:
- AC: 180°F (82°C)
- DC: 180°F (82°C)
- Body Material: Brass
- Seal Material: NBR Diaphragm
- 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 Enclosure: Approved for Class I, Div. 1 installations.
- No Voltage Release: Automatically shuts flow on power failure.
- High Flow Output: Designed for large-volume circuit applications.
- Reset-to-Resume Design: Requires manual intervention after tripping.
- Brass Body Durability: Built for rugged service fluid environments.
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
- High-Flow Air Networks: Stops volume delivery during faults.
- Pump Line Shutdowns: Controls fluid in safety-sensitive zones.
- Oil Feed Interrupts: Trip-based closure for combustive fluids.
- Inert Gas Systems: A manual reset ensures a deliberate restart.
- Utility Processing Plants: Reliable shutoff in explosive atmospheres.
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
- Use explosionproof fittings and code-compliant conduit seals.
- Can be installed in any orientation.
- Trip closure requires a manual reset before reactivation.
- Match the voltage and insulation class before energizing.
- Works with air, water, inert gas, and light oil media.
Series Catalog
Asco 8015/8025 Manual Reset Valves