Description
ASCO K3A771V Normally Closed Gas Valve Overview
The ASCO K3A771V is a normally closed (NC) solenoid-operated gas valve engineered for dependable automatic shutoff in residential and commercial gas control applications. With a 1-1/4″ pipe connection and a 24-volt coil, this valve integrates seamlessly into standard HVAC and heating system control circuits.
Key Features
- Pipe Size: 1-1/4″
- Coil Voltage: 24V
- Valve Action: Normally Closed (NC) — closes automatically upon de-energization for fail-safe operation
- Maximum Gas Pressure: 1.5 PSI
- Designed for gas service in heating and HVAC applications
- ASCO quality construction for long service life and reliable cycling
Application
The K3A771V is suited for use in gas-fired heating equipment, boilers, furnaces, and other systems requiring automatic gas flow control. The normally closed design ensures the valve defaults to a safe, closed position whenever power is interrupted, providing an essential layer of safety in gas distribution and combustion systems.
Why Choose ASCO
ASCO is a globally recognized leader in fluid control solutions, trusted by HVAC professionals for solenoid valves that deliver consistent performance in demanding environments. The K3A771V continues that tradition with robust construction and straightforward installation.







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