The Asco EF8025B224 Solenoid Valve is an explosion-proof solution for corrosive environments in small pipes. Its Latched Closed, No Voltage Release design ensures it shuts off when powered and opens only when de-energized. Featuring a stainless steel body and FPM-sealed PTFE disc, it provides high-pressure fail-open protection and manual reset integrity.
For Standard Enclosure: Asco 8025B224 Solenoid Valve
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 1/2″ NPT
- Flow Factor (Cv): 3.2
- Operating Pressure Differential:
- Air/Inert Gas: 5 to 250 psi
- Water: 5 to 250 psi
- Light Oil: 5 to 250 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 for Hazardous Use: Rated for use in classified corrosive zones.
- Power-Off Fail-Open Action: Opens flow path only when voltage is removed.
- Stainless Steel Corrosion Resistance: Ideal for aggressive fluid environments.
- Compact Design for Tight Spaces: Suited for small-bore line applications.
- Manual Reset Safeguard: Requires operator reset before restart.
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
- Chemical Injection Systems: Opens safely when control voltage is lost.
- High-Pressure Sampling Loops: Trip-open ensures safe process interruption.
- Gas Cabinet Isolation: Protects critical instrumentation from overexposure.
- Fuel Additive Dispensing: Resumes flow only after verified reset.
- Corrosive Fluid Bypass Lines: Maintain shutoff until de-energization event.
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 & Maintenance Notes
- Follow all NEC and local codes for hazardous location wiring.
- Ensure proper grounding and conduit sealing fittings.
- Confirm media and pressure compatibility before installation.
- Regularly inspect for wear or corrosion on sealing surfaces.
- Use only ASCO-certified parts for repair and servicing.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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