The Asco 8025B202 Solenoid Valve is a manually reset, pilot-operated valve configured for No Voltage Release service. Designed to remain latched open when energized, it trips closed upon power loss, making it ideal for safety-focused fluid systems. With a brass body and NBR diaphragm, it reliably handles air, inert gas, water, and light oil across medium flow applications.
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:
- Standard: RedHat metal solenoid enclosure, Type 1 General Purpose Junction Box
- Optional: Explosionproof and Watertight, Types 3, 7(C and D), and 9
Key Features and Functionality
- Latched Open Control: Remains open until tripped manually.
- No Voltage Release: Trips to closed state when power is lost.
- Brass Body Construction: Corrosion-resistant for general service fluids.
- Versatile Fluid Compatibility: Air, inert gas, water, and light oil.
- Mounting Flexibility: Can be installed in any position.
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
- Pumps and Circulation Lines: Secures fluid flow on signal loss.
- Compressed Air Systems: The valve enables fail-closed control logic.
- Water Processing Systems: Ensures safe manual reset after trip.
- Fuel Distribution: Blocks oil feed during fault events.
- Machine Safety Loops: Manual intervention is required after loss.
Compliance and Approvals
- CSA Certified
- Meets shock and vibration per ISA S71.03C2
Installation and Operational Notes
- Mount in any orientation without performance impact.
- A manual reset is required after tripping.
- Use compatible voltages and coil classes.
- Ensure valve matches fluid media and system pressure.
- Explosionproof versions require sealed conduit fittings.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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