The Asco 8025B209 Solenoid Valve is engineered for steam flow control in medium-to-large pipelines requiring reliable trip closure during power interruption. Its Latched Open, No Voltage Release configuration ensures the valve stays open during normal operation and closes only when voltage is removed.
Technical Specifications
- Valve Type: Manual Reset, Special Service Pilot, Latched Open
- Pipe Size: 1 1/4″
- Flow Factor (Cv): 15
- 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 Open Control: Remains open during coil energization.
- Trip-to-Close Sequence: Shuts off when electrical power drops.
- Steam-Certified Seal Package: It handles continuous exposure to vapor.
- Mid-Range Flow Handling: Fits medium-size thermal circuits.
- Manual Reset Compliance: Reset required before returning to service.
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
- Heat Exchanger Outlets: Closes when power loss interrupts control logic.
- Facility Steam Distribution: Opens during operation, trips during shutdown.
- Cleanroom Sterilizers: Requires reset before re-engaging service.
- Medium Boiler Systems: Maintain flow only while the coil remains energized.
- Temperature-Control Loops: Isolates sections after system deactivation.
Compliance and Approvals
- CSA Certified
- Meets shock and vibration per ISA S71.03C2
Installation and Operational Notes
- Mount in any orientation per system design.
- Reset manually following a trip event.
- Use only in clean, regulated steam circuits.
- Ensure a match with the expected fluid temperature and pressure.
- Follow code requirements for explosionproof conduit sealing if applicable.
Series Catalog
Asco 8015/8025 Manual Reset Valves
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