The Asco 8025B217 Solenoid Valve is a manually reset, pilot-operated valve with a Latched Closed, No Voltage Release configuration. It remains shut while the coil is energized and trips open only when the power is removed. Built with a brass body and NBR diaphragm, this valve is optimized for high-flow general service applications handling air, inert gas, water, and light oil.
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 1 1/2″ NPT
- Flow Factor (Cv): 22.5
- 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: Remains shut while the coil is energized.
- Failsafe Trip Action: Opens automatically during power interruption.
- High Flow Design: Sized for large-volume general service systems.
- Manual Reset Enforcement: Requires reset before restoring fluid path.
- Reliable Brass Assembly: Built for demanding industrial environments.
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 Fluid Distribution: Opens large-diameter lines after power shutdown.
- High-Volume Air Supply: Blocks airflow unless a de-energized trip occurs.
- Process Water Isolation: Prevents flow until coil power is interrupted.
- Oil Transfer Skids: Opens only during fault or safety trip.
- Industrial Restart Control: Requires reset before resuming large-scale flow.
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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