Description
The Johnson Controls V-3966-1001 is a 1/2″ flare-connection valve engineered for precise pneumatic flow control in commercial and industrial HVAC applications. With a normally closed (NC) configuration, the valve remains shut in the absence of control pressure, providing a fail-safe default position that protects downstream equipment and system integrity.
Key Features
- 1/2″ flare connection for secure, leak-resistant installation
- 9–13 PSI spring range for accurate pneumatic actuation and modulation
- Normally closed (NC) operation — valve closes upon loss of control signal
- 1.7 Cv flow coefficient for reliable, consistent flow capacity
- Designed for use in pneumatic control systems in commercial HVAC applications
- Durable construction suitable for demanding mechanical room environments
Application
The V-3966-1001 is ideal for use in pneumatically controlled HVAC systems where precise valve positioning and fail-safe operation are critical. Its 9–13 PSI spring range makes it compatible with standard pneumatic control signals, and the 1.7 Cv rating ensures adequate flow capacity for 1/2″ line sizes. The normally closed design is well-suited for applications requiring the valve to shut down automatically in the event of control air loss, such as chilled water coil control, heating coil isolation, and similar hydronic or refrigerant circuit applications.
Specifications
- SKU: V-3966-1001
- Brand: Johnson Controls
- Connection Size: 1/2″
- Connection Type: Flare
- Spring Range: 9–13 PSI
- Fail-Safe Position: Normally Closed (NC)
- Flow Coefficient (Cv): 1.7
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