The Asco 8025B203 Solenoid Valve is a latched open, manual reset valve designed for dependable operation in air, inert gas, water, and light oil systems. Using a No Voltage Release mechanism, the device remains open while energized and automatically closes when power is disconnected.
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Open
- Pipe Size: 1 1/4″ NPT
- Flow Factor (Cv): 15
- 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
- Manual Reset Safety: Requires manual restart after trip event.
- Power-Off Closure: The valve closes automatically when the coil is de-energized.
- Robust Brass Build: Withstands industrial fluid service conditions.
- NBR Diaphragm Sealing: Designed for standard process media.
- Universal Orientation: It is installable in any valve mounting 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
- Compressed Air Systems: Cuts air flow after power interruption.
- Water Distribution Lines: Latches open during operation, resets on demand.
- Oil Transfer Systems: It maintains secure fluid cutoff during fault conditions.
- Pump Start Interlocks: Allows restart only under monitored conditions.
- Utility Process Control: Ensures trip behavior on voltage 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 an electrical trip.
- 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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