Overview
The Asco 8210G018 RedHat Series solenoid valve is a general-purpose, pilot-operated 2-way valve designed for precise fluid control in industrial applications. With its 1-1/4″ NPT port size and normally-open configuration, this valve provides dependable switching of air, water, and light oil across a 5–150 PSI operating range. The brass construction and diaphragm design ensure long service life and watertight operation.
Key Features
- 2-Way, 2-Position pilot-operated solenoid valve
- Normally-Open (NO) configuration for fail-safe applications
- 1-1/4″ NPT port connections for easy installation
- Brass body with Buna N elastomer seals
- Rated for air, water, and light oil service
- Operating pressure range: 5–150 PSI
- NEMA 1/2/3/3S/4/4X enclosure ratings for environmental protection
- Lead-free construction
Technical Specifications
The following specifications are drawn from Asco documentation and distributor data:
- Model: 8210G018
- Series: RedHat II (8210)
- Configuration: 2-Way, 2-Position
- Port Size: 1-1/4″ NPT
- Port Type: FPT (Female Pipe Thread)
- Operation: Normally Open (NO)
- Valve Type: Pilot Operated Diaphragm
- Solenoid Voltage: 120 VAC, 60 Hz
- Solenoid Power: 16.1 W
- Flow Coefficient (Cv): 15
- Orifice Size: 1-1/8″
- Pressure Range: 5–150 PSI (air/water)
- Max Pressure (Oil): 125 PSI
- Max Temperature: 125°F
- Body Material: Brass, lead-free
- Seal Material: Buna N elastomer
- NEMA Rating: 1/2/3/3S/4/4X
- Certifications: UL Listed, CSA
Typical Applications
The Asco 8210G018 is suited for:
- Compressed air control systems in manufacturing plants
- Water supply and irrigation automation
- Light-duty hydraulic and pneumatic circuits
- Process control valve sequencing
- Industrial cooling and lubrication systems
- Plumbing and HVAC equipment with solenoid actuation
- Pump and motor start/stop circuits
Compatibility & Replacements
Compatible With
- Standard pneumatic and hydraulic control circuits
- 24 VAC, 120 VAC, 240 VAC solenoid coil options (varies by configuration code)
- Industrial PLC and automation controller switching logic
- Standard 1-1/4″ NPT manifold blocks
- HVAC and building automation systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 8210G018 may have configuration variants (voltage, frequency, enclosure) that affect direct replacement capability. Common related models in the 8210 series include 8210G032 (1″ port) and 8210G103 (2″ port), but these are different port sizes and not direct drop-in replacements.
Works With
- Solenoid coil part numbers: Asco coil series matching 8210 cavity type
- Manual override options available on most 8210 models
- Integral strainer and pressure relief designs
- Lead-free brass body compatible with potable water systems






















