The Asco 8290A397 Solenoid Valve is a pressure-operated, normally open angle-body piston valve with entry under the disc and a 50 mm operator. Its high Cv rating supports rapid evacuation or bypass in steam or fluid systems without requiring electrical hold-open. The wide accessory availability allows advanced stroke control, position feedback, and automation integration across washdown and thermal utility lines.
Technical Specifications
- Valve Type: Pressure Operated, Normally Open, 2-Way
- Pipe Size: 3/4″ NPT
- Flow Factor (Cv): On/Off: 11
- 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: Stainless Steel
- Disc Entry: Under the Disc
- Disc Material: Brass
- Disc Seal: PTFE
- Stem Material: 431 Stainless Steel
- Stuffing Box: Brass
- Stuffing Box Seal: PTFE Chevron
- Wiper Seal: FKM
- Operator Size: 50 mm
Key Features and Functionality
- Angle-Body Design: Provides high flow with minimal pressure loss.
- Normally Open Configuration: Allows fail-open flow for safety-critical processes.
- Steam-Rated Construction: Handles aggressive fluids at elevated temperatures.
- 50 mm Operator: Delivers consistent actuation across demanding cycles.
- Accessory-Ready Platform: Supports positioners, indicators, and stroke limiters.
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: Opens hot rinse bypass in CIP systems.
- Automotive & Car Wash Systems: Dumps heated rinse water after cycles.
- HVAC & Steam Systems: Vents condensate in open loop headers.
- Manufacturing & Automation: Acts as a normally open blow-off valve.
- Chemical & Petrochemical: Manages the rain or bypass in reactors.
Compliance and Approvals
- RoHS Compliant
- NEMA Type 4 (Watertight)
- NEMA Type 4X (Corrosion-Resistant)
Installation and Operational Notes
- Mount the valve upright to ensure vertical drainage.
- Clean piping thoroughly before valve installation.
- Flush the system after installation to remove debris.
- Disassemble the valve periodically for internal inspection.
- Match coil specs during solenoid replacement.
Series Catalog
Asco 8290 Angle Body Multi-purpose Valves
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