The Johnson Controls V47AA-1 is a direct acting, temperature actuated water regulating valve engineered for reliable hydronic and water-based HVAC system control. Built with a cast brass body for durability and corrosion resistance, this valve responds directly to temperature changes — no external power source required — making it a dependable choice for a wide range of commercial and light industrial heating applications.
How It Works
The V47AA-1 uses a remote bulb and capillary sensing system to modulate water flow in response to system temperature. As the sensed temperature rises within the 115°F to 180°F heating point range, the valve opens or closes proportionally to maintain the desired setpoint. The 6-foot capillary provides flexible bulb placement away from the valve body, allowing accurate sensing in hard-to-reach locations.
Key Features
- Direct acting, temperature actuated operation — no external power required
- Cast brass body construction for long-lasting durability and corrosion resistance
- 3/8″ NPT inlet/outlet connection for easy installation into standard piping
- Heating point range: 115°F to 180°F for broad application compatibility
- 6-foot capillary for flexible remote bulb placement
- Style 4 bulb: 11/16″ diameter x 3-1/4″ long for precise temperature sensing
- 1/2″ NPT external fitting for straightforward system integration
Specifications
- SKU / Model: V47AA-1
- Brand: Johnson Controls
- Connection Size: 3/8″ NPT
- Body Material: Cast Brass
- Operation Type: Direct Acting, Temperature Actuated
- Heating Point Range: 115°F – 180°F
- Capillary Length: 6 feet
- Bulb Style: Style 4
- Bulb Dimensions: 11/16″ diameter x 3-1/4″ long
- External Fitting: 1/2″ NPT
Typical Applications
- Hydronic heating systems
- Commercial water temperature regulation
- Boiler and heat exchanger water flow control
- Industrial process temperature management
