The Asco 8025B224 Solenoid Valve is a compact, pilot-operated solution designed for corrosive environments where high pressure and fail-open behavior are essential. With a Latched Closed, No Voltage Release configuration, it remains sealed under power and opens only when de-energized. This component ensures reliability in small line systems that need a manual reset before restarting.
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 1/2″ NPT
- Flow Factor (Cv): 3.2
- Operating Pressure Differential:
- Air/Inert Gas: 5 to 250 psi
- Water: 5 to 250 psi
- Light Oil: 5 to 250 psi
- Maximum Fluid Temperature:
- AC: 350°F (177°C)
- DC: 350°F (177°C)
- Body Material: Stainless Steel
- Seal Material: PTFE Disc with FPM Seals
- 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 Operation: Remains shut while the coil is energized.
- De-energized Trip Open: Activates flow when signal is lost.
- Corrosion-Resistant Design: Stainless steel and FPM seals handle aggressive media.
- Compact System Fit: Ideal for tight-space installations.
- Reset-to-Restore Control: Flow requires manual reactivation after an electrical trip.
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
- Acid Feed Isolation: Opens only when power is interrupted.
- Chemical Line Lockouts: Flow requires reset after trip occurs.
- Hazardous Fluid Stops: Closes under control signal, opens during fault.
- Solvent Header Control: Ensures valve cannot restart automatically.
- Corrosive Media Transfer: Trips open when the energized circuit is lost.
Compliance and Approvals
- CSA Certified
- Meets shock and vibration per ISA S71.03C2
Installation and Operational Notes
- Mountable in any valve orientation.
- Reset required following trip event.
- Use only with compatible corrosive fluids.
- Confirm pressure and media range before installation.
- Seal conduit connections for explosionproof models as required.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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