The Asco EF8025B217 Solenoid Valve is a high-capacity explosionproof valve for general service shutoff applications. With its Latched Closed, No Voltage Release design, the valve stays closed while energized and trips open automatically when the coil loses power. Made with a brass body and NBR diaphragm, it offers reliable performance in air, water, inert gas, and light oil systems, with a manual reset after faults.
For Standard Enclosure: Asco 8025B217 Solenoid Valve
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- 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 Certified: Engineered for use in Class I and II areas.
- Power-Loss Flow: Opens automatically during voltage failure events.
- Secure Manual Reset: It ensures the system remains off until verified.
- Brass Construction: Optimized for high-volume utility piping.
- Universal Mounting: Installs vertically or horizontally with no restrictions.
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
- Boiler Blowdown Relief: Opens lines safely when systems trip.
- Oil Transfer Racks: Supports rapid flow in load/unload stations.
- Bulk Water Distribution: Maintains fail-open logic for tank systems.
- Ventilation Dampers: The valve acts as a safety trigger for large dampers.
- Process Safety Cutouts: Allows high-volume purge on signal loss.
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
- Can be mounted in any direction.
- A manual reset must follow each trip event.
- Explosionproof fittings must be installed per code.
- Verify system voltage and coil insulation prior to power-up.
- Compatible with air, inert gas, water, and light oil.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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