Overview
The Asco 8210G035 RedHat II solenoid valve is a 2-way, normally open, pilot-operated general-service valve designed for industrial automation and fluid control systems. This 3/4 NPT unit features a brass body with resilient seals, delivering 5.5 Cv high-flow capacity and ratings up to 150 psi for air, water, and light oil applications. The normally open configuration ensures automatic fail-open operation—the valve opens when power is removed, making it ideal for safety-critical drainage, bypass, and pressure relief tasks.
Key Features
- Normally open (NO) operation—opens automatically when de-energized for system safety
- High flow capacity: 5.5 Cv at 3/4 NPT
- Pilot-operated diaphragm design reduces coil wattage and power consumption
- Brass body with Buna-N seals for durability across liquids, corrosives, and gas service
- No minimum operating pressure required; mountable in any direction
- RedHat II watertight solenoid enclosure (NEMA 4 standard)
Technical Specifications
- Model: 8210G035
- Port Size: 3/4 NPT female threaded inlet/outlet
- Valve Type: 2-way, 2-position, normally open
- Flow Capacity (Cv): 5.5
- Body Material: Brass, lead-free
- Seal Material: Buna-N (NBR)
- Operating Pressure: 0 to 150 psi (air/water), 0 to 125 psi (light oil)
- Maximum Temperature: 180°F (82°C)
- Operating Temperature Range: 32–125°F (0–52°C)
- Enclosure Rating: NEMA 4 (RedHat II watertight)
- Solenoid Power: Multiple coil voltages available (24 VDC, 24 VAC, 120 VAC typical)
- Mounting: Any direction (no minimum pressure required)
Typical Applications
The Asco 8210G035 excels in high-volume, fail-open applications across multiple industries:
- Car wash systems—pump shutdown and water drainage on power loss
- Laundry equipment—liquid dispensing and line draining
- Industrial water control—tank filling, pressure relief, and emergency shutdown
- Compressed air systems—pilot-operated branch control and energy recovery
- Pump protection—automatic bypass and prime-line venting
- Light oil systems—up to 300 SSU (Saybolt Seconds Universal)
Compatibility & Replacements
Compatible With
- Standard industrial solenoid coils (24 VDC, 24 VAC, 120 VAC, 220 VAC, and custom voltages)
- NFPA and ISO manifold systems using 3/4 NPT cavity patterns
- Pneumatic and hydraulic circuits rated for 150 psi or less
- Manual override kits and manual drain plugs (available as options)
Replaces / Drop-In Replacement For
- Earlier Asco 8210G035 models with RedHat I enclosures (RedHat II upgrade)
- General-purpose 3/4 NPT normally open solenoid valves in equivalent pressure/flow ratings
- Verify compatibility with your system integrator before ordering legacy or cross-manufacturer substitutions
Works With
- Asco RedHat II standard watertight solenoid coils and enclosures
- 24 VDC, 24 VAC, 120 VAC, 208 VAC, 220 VAC, 240 VAC coil options
- Voltage-ranging modules and timers for advanced control logic
- Manual override and integral check valve options
