The Asco EF8025B218 Solenoid Valve is a heavy-duty, explosion-proof valve designed for large-scale shutoff operations. It’s latched-closed with a no-voltage-release feature to keep the flow sealed when powered on and opens automatically when power is lost. With a brass body and NBR diaphragm, it controls air, water, inert gas, and light oil in safety-critical applications.
For Standard Enclosure: Asco 8025B218 Solenoid Valve
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 2″ NPT
- Flow Factor (Cv): 43
- 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 Safety Housing: Complies with NEC standards for hazardous zones.
- Power-Loss Fail-Open Operation: Restores flow path when coil is de-energized.
- High-Capacity Flow Performance: Cv rating of 43 for demanding applications.
- Reset-After-Trip Protection: Requires manual action to re-enable flow.
- No Mounting Restrictions: Install in any pipeline orientation as needed.
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
- Large-Scale Pump Stations: Opens flow after safety trip events.
- Fuel Header Systems: Enable secure flow recovery post-shutdown.
- High-Capacity Water Loops: Manages large volume fluid isolation.
- Blower Line Isolation: Vent systems triggered by electrical loss.
- Power Plant Utility Lines: Integrated into emergency dump circuits.
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 orientation as system design requires.
- Manual reset required following each tripped event.
- Use explosionproof conduit components in classified areas.
- Always match the coil voltage and insulation to the system power.
- Suitable for air, inert gas, water, and light oil.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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