The Asco EF8025B202 Solenoid Valve features explosionproof protection and a No Voltage Release configuration. This pilot-operated unit stays latched open under power and trips shut during voltage loss—safeguarding medium-flow circuits handling air, inert gas, water, or light oil. Its robust brass construction and NBR diaphragm ensure dependable shutdown in hazardous environments.
For Standard Enclosure: Asco 8025B202 Solenoid Valve
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Open
- Pipe Size: 1″ NPT
- Flow Factor (Cv): 13
- 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: Built to operate in Class I, Div. 1 areas.
- Failsafe Trip Closure: Automatically shuts when power is lost.
- Pilot-Operated Diaphragm: Maintains flow until tripped manually.
- Durable Brass Assembly: Engineered for rugged system conditions.
- Manual Reset Mechanism: Requires reset before restart after trip.
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
- Compressor Outlet Isolation: Trips closed in fault scenarios.
- Fluid Circuit Interlocks: Secures lines after power loss.
- Pump Control Safety: Prevents unintentional system reactivation.
- Oil Transfer Systems: Reliable under flammable zone conditions.
- General Utility Valving: Supports mid-volume control loops.
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
- Requires explosionproof fittings and conduit seals.
- Can be mounted in any valve orientation.
- Reset must be performed after trip closure.
- Use correct voltage and insulation class during install.
- Compatible with air, inert gas, water, and light oil media.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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