ASCO 8220G11 2-Way Normally Closed Solenoid Valve, 1-1/2″ NPT, 120VAC

Description

ASCO 8220G11 2-Way Normally Closed Solenoid Valve Overview

The ASCO 8220G11 is a heavy-duty, pilot-operated solenoid valve engineered for reliable on/off control of steam and hot water in demanding HVAC and industrial applications. With a 1-1/2″ NPT connection, 120VAC coil, and a generous 22.5 Cv flow coefficient, this valve delivers high-capacity flow control in a compact, durable package. The normally closed design ensures the valve remains shut in the de-energized state, providing a safe fail-safe default position for critical systems.

Key Features

• 2-Way, Normally Closed (NC) pilot-operated configuration
• 1-1/2″ NPT pipe connection for straightforward installation
• 120VAC operating voltage
• 22.5 Cv flow coefficient for high-volume flow capacity
• Steam service: rated for 5–50 PSI operating pressure
• Hot water service: rated for 5–150 PSI operating pressure
• Brass valve body for excellent corrosion resistance and durability
• EPDM diaphragm — ideal for steam and hot water media compatibility
• NEMA 4X enclosure rating — suitable for indoor and outdoor use, including wet and corrosive environments

Specifications

• SKU: 8220G11
• Brand: ASCO
• Valve Type: 2-Way Solenoid Valve
• Operation: Normally Closed (NC)
• Actuation: Pilot Operated
• Connection Size: 1-1/2″ NPT
• Voltage: 120VAC
• Cv Rating: 22.5
• Steam Pressure Range: 5–50 PSI
• Hot Water Pressure Range: 5–150 PSI
• Body Material: Brass
• Diaphragm Material: EPDM
• Enclosure Rating: NEMA 4X

Applications

• Steam distribution and control systems
• Hot water heating and hydronic systems
• Commercial and industrial HVAC equipment
• Process heating applications requiring reliable on/off flow control

Why Choose the ASCO 8220G11?

ASCO is a globally recognized leader in solenoid valve technology, and the 8220G11 reflects that heritage. The NEMA 4X enclosure ensures protection against dust, splashing water, and corrosive environments — making it suitable for mechanical rooms, rooftop installations, and other challenging locations. The EPDM diaphragm provides excellent resistance to steam and hot water, extending service life and reducing maintenance intervals. Whether you’re upgrading an existing system or specifying new equipment, the ASCO 8220G11 delivers the performance and reliability your application demands.