The Asco EF8025B226 Solenoid Valve is an explosionproof shutoff valve for hot, corrosive fluids. It operates with Latched Closed, No Voltage Release, remaining sealed during power and automatically opening when de-energized. Featuring a stainless steel body and PTFE/FPM sealing, it ensures high-temperature reliability and allows for manual reset in critical process lines.
For Standard Enclosure: Asco 8025B226 Solenoid Valve
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 1″ NPT
- Flow Factor (Cv): 11.2
- 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: 350°F (177°C)
- DC: 350°F (177°C)
- Body Material: Stainless Steel
- Seal Material: PTFE Disc with FPM Seals
- 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 and Heat-Tolerant: Rated for hazardous areas with up to 350°F fluid.
- Trip-Open During Power Failure: Automatically opens to relieve line pressure.
- Stainless Steel for Harsh Media: Resists corrosion in chemical and process systems.
- Controlled Manual Restart: Prevents unintended flow without operator action.
- Optimized for 1″ Line Capacity: Balances flow and safety in mid-size circuits.
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
- Corrosive Fluid Containment: Trips open to relieve pressure during shutdown.
- Thermal Chemical Processing: Manages flow at elevated system temperatures.
- High-Purity Transfer Systems: Ensures clean fail-open control during signal loss.
- Safety Venting for Reactors: Supports emergency response in pressure-sensitive systems.
- Waste Neutralization Units: These open for discharge when system power fails.
Compliance and Approvals
- CSA Certified
- Meets shock and vibration per ISA S71.03C2
- Explosionproof and Watertight, Types 3, 7(C and D), and 9
Installation and Operational Notes
- Mount in any pipeline orientation.
- A manual reset is required after trip events.
- Use explosionproof-rated fittings and enclosures where applicable.
- Ensure the voltage and coil class match the installation specs.
- Compatible with air, inert gas, water, and light oil.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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