The Asco EF8025B218 Solenoid Valve is a heavy-duty, explosionproof valve optimized for large-scale shutoff operations. Its Latched Closed, No Voltage Release configuration ensures flow remains sealed during power-on conditions and trips open when voltage is lost.
For Standard Enclosure: Asco 8025B218 Solenoid Valve
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 2 1/2″ NPT
- Flow Factor (Cv): 45
- 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
- Hazard-Rated Valve Construction: Certified for explosive fluid environments.
- Power-Loss Triggered Activation: Opens flow only after electrical disconnection.
- Oversized Cv for Mass Transfer: Designed for facilities with high output volume.
- Positive Lock Manual Reset: Operator must re-enable flow post-trip.
- Install Anywhere Design: Supports vertical and horizontal orientations with no limits.
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
- Tank Farm Isolation: Opens main lines during emergency cutouts.
- Municipal Lift Stations: Trips open for gravity-fed drainage operations.
- Terminal Fueling Operations: Prevents unintended flow during fault detection.
- Bulk Material Cooling Loops: Allows controlled fluid re-entry after trip.
- High-Flow Blower Controls: Manages airflow release when power drops.
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
- It can be mounted in any piping configuration.
- Must be manually reset after trip for reactivation.
- Install with certified conduit for classified use zones.
- Matched coil type and rating to system voltage specs.
- Approved for use with air, inert gas, water, and light oil.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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