The Asco 8025B220 Solenoid Valve is designed for steam applications requiring secure shutoff during normal operation and a dependable trip-open response when power is lost. Its Latched Closed, No Voltage Release configuration ensures the valve remains closed while energized and opens only upon de-energization.
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Closed
- Pipe Size: 3/4″
- Flow Factor (Cv): 7.8
- Operating Pressure Differential:
- Steam: 5 to 125 psi
- Maximum Fluid Temperature:
- AC: 353°F (178°C)
- DC: 353°F (178°C)
- Body Material: Brass
- Seal Material: PTFE Disc with EPDM, FPM, and PTFE 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: Remains sealed while the coil is powered.
- Trip-Open Activation: Opens automatically when power is removed.
- Steam-Compatible Design: It withstands high temperatures and saturated steam.
- Compact System Integration: Ideal for tight installations in steam systems.
- Manual Reset Enforcement: Must be manually reset after each 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
- Autoclave Steam Inlets: Opens flow during power loss events.
- Sterilizer Valve Panels: It maintains shutoff until the system signal fails.
- Small Boiler Distribution: Trips open when energized power is interrupted.
- Laundry Finishing Equipment: Flow enabled only after trip condition.
- Thermal Lockout Circuits: Must be reset manually before operation resumes.
Compliance and Approvals
- CSA Certified
- Meets shock and vibration per ISA S71.03C2
Installation and Operational Notes
- Mount in any orientation without flow impact.
- Reset required after trip-open event.
- Ensure clean, dry steam conditions.
- Verify pressure and temperature compatibility.
- Explosionproof setups must follow conduit sealing code.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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