The Asco 8025B218 Solenoid Valve is a pilot-operated, manually reset unit designed to manage high-volume fluid shutoff with precision. Its Latched Closed, No Voltage Release configuration keeps flow securely blocked during normal operation and trips open when power is removed.
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 2″ NPT
- Flow Factor (Cv): 43
- 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 Closed Control: Keeps fluid blocked while the system is energized.
- Trip-to-Open Design: Opens only when an electrical signal is removed.
- Supports High Flow Demand: Sized for large pipelines and service headers.
- Manual Reset Enforcement: Requires human action before restoring flow.
- Reliable Brass Assembly: Handles general service conditions with consistency.
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
- Main Distribution Lines: Allows flow after voltage loss in large systems.
- Pneumatic Supply Loops: Releases air when the energized circuit fails.
- Water Transfer Headers: Enable fluid passage under trip conditions.
- Oil Feed Infrastructure: Opens pipeline only during fault scenario.
- Facility Control Sequences: Demands manual reset to continue operation.
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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