The Asco 8290A503 Solenoid Valve is a normally open, stainless steel valve built for handling high-temperature steam and slurries. A Cv of 77 ensures strong discharge flow, while its under-disc path and fail-open design make it ideal for system venting and drain service. Its various position indicators and stroke control options improve flexibility in utility applications.
Technical Specifications
- Valve Type: Pressure Operated, Normally Open, 2-Way
- Pipe Size: 2″ NPT
- Flow Factor (Cv):
- On/Off: 77
- Operating Pressure Differential:
- Min: 0 psi
- Max (Fluids): 240 psi
- Max (Steam): 150 psi
- Air or Water Pilot Pressure:
- Min: Varies
- Max: 150 psi
- Maximum Fluid Temperature: 366°F (186°C)
- Construction:
- Body Material: 316L Stainless Steel
- Disc Entry: Under the Disc
- Disc Material: 304L Stainless Steel
- Disc Seal: PTFE
- Stem Material: 431 Stainless Steel
- Stuffing Box: 303 Stainless Steel
- Stuffing Box Seal: PTFE Chevron
- Wiper Seal: FKM
- Operator Size: 125 mm
Key Features and Functionality
- Fail-Open Configuration: Enables continuous flow during power loss.
- Corrosion-Resistant Body: 316L stainless steel for aggressive environments.
- Actuator Integrity: Dual O-ring and FKM wiper prevent contamination.
- High Flow Design: The straight-through body supports large discharge volumes.
- Diagnostic Ready: Compatible with stroke limiters and feedback devices.
Compatible Components and Related Parts
- ASCO 8290 Compact Positioner
- ASCO 8290 Signaling Box
- ASCO 8290 Linear Position Indicator
- ASCO 8290 Stroke Limiter
Industry Applications
- Food & Beverage: Handles open-loop drains in clean utility networks.
- Manufacturing: Bypass or vent valve in thermal control loops.
- Automotive/Car Wash: Directs high-flow rinse discharge under fail-safe logic.
- HVAC/Steam Systems: Ensures outlet flow during system shutdowns.
- Chemical Processing: Stainless solution for hot or caustic drain isolation.
Compliance and Approvals
- RoHS Compliant
- Type 4 Enclosure
- Type 4X Enclosure
Installation and Operational Notes
- Mount vertically to support the actuator drainage.
- Ensure pipe cleanliness to avoid seal wear.
- Limit sealant use on threaded connections.
- Flush the valve body prior to energizing.
- Match coil voltage and disconnect power before servicing.
Series Catalog
Asco 8290 Angle Body Multi-purpose Valves
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