The Asco 8025B202 Solenoid Valve is a latched open, special service pilot valve with an electrically tripped manual reset design. When energized, the valve trips and remains closed until manually reset. This configuration is ideal for air, water, and light oil systems in power plants, utility loops, and critical shutdown processes requiring reliable lockout control.
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 (AC), 5 to 125 psi (DC)
- Water: 5 to 125 psi (AC), 5 to 125 psi (DC)
- Light Oil: 5 to 125 psi (AC), 5 to 125 psi (DC)
- Maximum Fluid Temperature
- AC: 180°F
- DC: 180°F
- Body Material: Brass
- Seal Material: NBR
- Voltage Options
- AC (60Hz): 24, 120, 240, 480V
- AC (50Hz): 110, 220V
- 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: NEMA 1 (General Purpose Junction Box)
- Optional: Explosionproof & Watertight (Types 3, 7, 9)
Key Features and Functionality
- Electrically Tripped Operation: Trips when energized, locks until reset.
- Manual Reset Latch Open: Remains open during normal state.
- Special Service Pilot Design: Built for fail-safe control loops.
- Handles Multiple Media: For air, inert gas, water, and light oil.
- Mountable In Any Position: Easy to install in any layout.
Compatible Components and Related Parts
- ASCO RedHat II Coil Series
- ASCO Manual Reset Handle Assembly
- ASCO Mounting Brackets
- ASCO Explosionproof Solenoid Enclosure
Industry Applications
- Power Plants: Controlled latch-open flow for fuel or air.
- Boiler Feedwater: Trips on signal, requires manual validation.
- Utility Shutdown Loops: Prevents flow after power loss.
- Pilot Fuel Systems: Safety shutdown for burner trains.
- Compressor Circuits: Manual restart after tripping event.
Compliance and Approvals
- CSA Certified
- Conforms to ISA S71.03C2 shock and vibration standards
Installation and Operational Notes
- Trips when energized and remains tripped until manually reset.
- Specify voltage during coil selection.
- Explosionproof enclosure is required for hazardous areas.
- No restriction on mounting orientation.
- Not intended for automatic restart systems.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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