Solenoid Valve, 2-Way, 2-Position, Normally Closed, 1/2 in Pipe Size, 24V DC, Diaphragm, Piston

The ASCO 8220G405 is a pilot-operated, 2-way solenoid valve suitable for hot water and steam flow control. It features a diaphragm and piston valve type with a normally closed configuration. Constructed with a brass body and PTFE seals, this valve operates within an ambient temperature range of 14 to 140 degrees Fahrenheit and can handle fluid temperatures up to 210°F for hot water and 300°F for steam. It accommodates a 1/2 inch nominal pipe size with NPTF inlet and outlet connections, and includes an coil for actuation. The valve provides automated control of fluid flow with a flow coefficient (Cv) of 4.7.

Key Features:

• Valve Design: Diaphragm, Piston with 2-Way, 2-Position operation
• Operation Type: Pilot Operated; Valve Starting Configuration: Normally Closed
• Media Compatibility: Hot Water and Steam
• Maximum Ambient Temperature: 140°F; Minimum Ambient Temperature: 14°F
• Maximum Fluid Temperature: 210°F Water, 300°F Steam
• Maximum Operating Pressure Differential: 150 psi for hot water, 50 psi for steam
• Body Material: Brass with PTFE seal material
• Coil Enclosure: Watertight without junction box; Coil Insulation Class: H
• Electrical Connections: 1/2 in conduit with 18 in leads; Voltage: 24V DC; Wattage: 15.6 W
• Nominal Pipe Size: 1/2 in with NPT thread type and NPTF inlet and outlet connections
• Dimensions: Overall Height 4-3/32 in; Length 2-7/8 in; Width 2-1/4 in
• Environmental Rating: Indoor, Outdoor, Hazardous, Washdown
• Flow Capacity: Cv of 4.7; Orifice Diameter: 1/2 in
• Standards: CSA, UL Listed