The Asco 8221G031 Solenoid Valve (8221G31) is a 2-way, pilot-operated solenoid valve designed for industrial water control applications. Featuring a brass body and a slow-closing mechanism, it effectively reduces water hammer, eliminating the need for additional suppressors in most systems.
Technical Specifications
- Valve Type: Pilot Operated, Normally Open, 2-way
- Pipe Size: 1 1/2″ NPT
- Flow Factor (Cv): 24.0
- Operating Pressure Differential:
- Water: 5 to 150 psi (AC)
- Maximum Fluid Temperature: 180°F (82°C)
- Body Material: Brass
- Seal Material: NBR (Nitrile Butadiene Rubber) and PTFE
- Voltage Options:
- AC (60Hz): 24, 120, 240, 480V
- AC (50Hz): 110, 220V
- DC: 6, 12, 24, 120, 240V
- Watt Rating:
- AC: 16.1 watts
- Coil Insulation Class: F
- Solenoid Enclosure:
- Standard: RedHat II (Watertight, Types 1-4X); RedHat (Type I)
- Optional:
- RedHat II (Explosionproof & Watertight, Types 3-9)
- RedHat (Explosionproof & Raintight, Types 3, 7, 9)
Key Features and Functionality
- Normally Closed: Remains shut until activated by control.
- Snubber Mechanism: Slows closure to prevent system damage.
- No Extra Suppressors: Minimizes risk of water hammer issues.
- High Reliability: Stainless steel core and plug nut for extended service life.
- Enclosure Options: Available in general, watertight, and explosion-proof.
Compatible Components and Related Parts
- ASCO RedHat II solenoid coils
- ASCO mounting brackets and spare coil kits
- Pressure regulators and flow control accessories
- ASCO strainers and filters for fluid protection
Industry Applications
- Water Treatment & Distribution: Ensures controlled fluid handling and reduces water hammer.
- Industrial Fluid Control: Ideal for facilities with frequent valve cycling.
- Cooling & Refrigeration: Provides regulated flow and stable shutoff.
- Fire Suppression & Safety: Reliable operation for emergency water flow.
- Marine & Offshore Handling: Durable design for harsh environments.
Compliance and Approvals
- CSA Certified
- UL Listed (General Purpose Valves)
- CE Compliant (RedHat II series)
Installation and Operational Notes
- Valves must be installed in line with the flow direction indicated on the unit.
- Requires a minimum operating pressure differential of 5 psi for proper function.
- For hot water applications, refer to 8221G031HW.
- Explosion-proof enclosures must be ordered with the appropriate “EF” prefix.
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance.