The Asco 8025B225 Solenoid Valve is a pilot-operated valve designed for corrosive applications, requiring manual flow control. Its Latched Closed, No Voltage Release design keeps it closed while energized and opens when de-energized. With a stainless steel body and PTFE disc with FPM seals, it offers reliable sealing and chemical resistance for safe operation.
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 3/4″ NPT
- Flow Factor (Cv): 7.8
- 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 Configuration: Maintains shut-off while the coil remains energized.
- Trip-to-Open Mechanism: Opens automatically when the power signal is removed.
- Chemical-Ready Construction: Stainless steel housing withstands aggressive fluids.
- Medium Flow Handling: Suitable for moderate-capacity corrosive applications.
- Manual Reset Security: Prevents reactivation without operator reset.
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
- Process Chemical Safety: Opens line when control voltage is lost.
- Solvent Transfer Systems: Requires reset after the fault-triggered trip.
- Corrosive Media Feed: Valve opens only during safe failure state.
- Hazardous Distribution Lines: Prevents unintentional reactivation of flow.
- Clean Process Shutdowns: Allows manual confirmation before restart.
Compliance and Approvals
- CSA Certified
- Meets shock and vibration per ISA S71.03C2
Installation and Operational Notes
- Suitable for vertical or horizontal installation.
- Reset required after every trip event.
- Use in systems with corrosive fluids only.
- Confirm pressure and fluid compatibility before operation.
- Explosionproof setups must comply with conduit sealing code.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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