ASCO 8221G9 2-Way Normally Closed Solenoid Valve 1-1/4″ NPT 120VAC

Description

ASCO 8221G9 2-Way Normally Closed Solenoid Valve Overview

The ASCO 8221G9 is a heavy-duty, pilot-operated solenoid valve engineered for reliable water flow control in commercial and industrial HVAC applications. Featuring a 2-way, normally closed configuration, this valve remains shut when de-energized and opens upon receiving a 120VAC signal — providing a safe, fail-safe operation ideal for water systems.

Key Features

• 2-Way, Normally Closed (NC) configuration for fail-safe water shutoff
• 1-1/4″ NPT pipe connection for straightforward installation
• 120VAC coil voltage for standard commercial electrical systems
• High flow capacity with a 13 Cv flow coefficient
• Operating pressure range: 5–150 PSI
• Pilot-operated design for efficient, low-power actuation
• Slow-closing action minimizes water hammer and system shock
• Brass body construction for corrosion resistance and durability
• NBR (Buna-N) seals compatible with water and general-purpose fluids
• NEMA 4 enclosure rating for protection against splashing water and washdowns

Application

The ASCO 8221G9 is designed for water service in HVAC, plumbing, and light industrial systems. Its pilot-operated mechanism makes it well-suited for higher-flow applications where a full-port, low-pressure-drop solution is required. The slow-closing feature is especially valuable in systems prone to water hammer, protecting piping, fittings, and connected equipment from pressure surges.

Specifications

• Model: ASCO 8221G9
• Valve Type: 2-Way Solenoid Valve
• Operation: Normally Closed (NC)
• Actuation: Pilot Operated, Slow Closing
• Port Size: 1-1/4″ NPT
• Coil Voltage: 120VAC
• Flow Coefficient (Cv): 13
• Pressure Range: 5–150 PSI
• Media: Water
• Body Material: Brass
• Seal Material: NBR (Buna-N)
• Enclosure Rating: NEMA 4