Overview
The ASCO 8210B059 solenoid valve is a pilot-operated, general-service 2-way, 2-position control valve designed for moderate-temperature industrial applications. With a brass body and 1-1/2 in female pipe thread (FPT) connections, this normally open valve opens immediately upon de-energization and closes when the solenoid is energized. The 8210 series is engineered for economical, high-flow operation across multiple media types.
Key Features
- Pilot-Operated Design: Lower power consumption (20 watts @ 120 VAC) with proportional response across the pressure range
- Normally Open Configuration: Valve opens when de-energized, ensuring fail-safe operation in critical applications
- Multi-Media Compatibility: Rated for air, inert gases, water, and light oil (up to 300 SSU) service
- Brass Body with NBR Seals: Corrosion-resistant construction with low internal leakage and extended service life
- High Flow Capacity: Flow coefficient (Cv) of 22.5 enables efficient liquid and gas control
- NEMA Enclosure Options: Available with NEMA 1, 2, 3, 3S, 4, and 4X stainless-steel enclosures for harsh industrial environments
Technical Specifications
- Port Size: 1-1/2 in FPT x 1-1/2 in FPT
- Orifice Size: 1-1/4 in diameter
- Operating Pressure: 0 to 125 psi (air/inert gas/water/light oil)
- Minimum Operating Pressure Differential: 5 psid
- Media Temperature: 32° to 180°F (0° to 82°C)
- Electrical Specification: 120 VAC, 60 Hz, 20 watts coil power (also available 110 VAC 50 Hz)
- Coil Insulation Class: F
- Flow Coefficient (Cv): 22.5
- Body Material: Brass
- Seals & Disc Material: NBR (nitrile rubber)
- Electrical Connection: 1/2 in conduit with 18 in leads
- Dimensions: Approximately 4-7/16 in L × 3-15/16 in W × 7-11/16 in H
Typical Applications
The ASCO 8210 series is widely deployed in industrial automation and fluid control systems:
- Industrial air compressor discharge and intake control
- Pneumatic and hydraulic system shutoff
- Commercial and industrial water supply regulation
- Car wash and laundry equipment fluid distribution
- Pump inlet/outlet isolation and pressure relief
- Process automation and liquid/gas shutoff applications
Compatibility & Replacements
Compatible With
- Standard industrial pneumatic systems (0–125 psi)
- Compressed air distribution networks
- Water supply and wastewater control systems
- Light hydraulic oil systems (up to 300 SSU viscosity)
- Direct 120 VAC electrical circuits with soft-start or standard contactor control
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 8210B059 is cataloged as part of the ASCO 8210 Series and should be cross-checked against legacy or OEM-specific model numbers in your documentation.
Works With
- Standard industrial electrical control panels and PLCs
- Pilot-operated solenoid coil assemblies rated for 120 VAC 60 Hz or 110 VAC 50 Hz
- Pneumatic and hydraulic circuit integrators compatible with NPT port connections
- NEMA 4X stainless steel enclosure kits for hygienic and harsh-environment installations




