The Asco 8025B226 Solenoid Valve is a pilot-operated, latched closed unit for corrosive fluids in high temperatures. It stays shut when energized and opens when de-energized, ensuring fail-open protection for critical processes. With a stainless steel body, PTFE disc, and FPM seals, it guarantees reliable performance where fluid safety is essential.
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 1″ NPT
- Flow Factor (Cv): 11.2
- 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: 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 Function: The valve remains shut during energized conditions.
- Power-Off Trip Open: Opens automatically when voltage is removed.
- Corrosive Media Compatibility: Stainless steel and FPM seals resist aggressive fluids.
- High-Temperature Performance: Rated for elevated thermal system use.
- Reset-Required Restart: The operator must confirm a restart after a 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
- Chemical Delivery Systems: Opens line during de-energized fault conditions.
- Corrosive Process Control: Prevents auto-restart without manual reset.
- High-Temperature Feed Lines: Secures flow until control signal is removed.
- Safety Trip Logic Systems: Allows flow only after a safe trigger.
- Hazardous Flow Isolation: Blocks fluid unless power signal fails.
Compliance and Approvals
- CSA Certified
- Meets shock and vibration per ISA S71.03C2
Installation and Operational Notes
- Mountable in any pipeline orientation.
- A manual reset is required after a valve trip.
- Ensure compatibility with corrosive fluids and high temperatures.
- Use within stated pressure and voltage ratings.
- Seal fittings as required for explosionproof versions.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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