Description
The Johnson Controls V47AB-3 is a direct acting, temperature actuated water regulating valve engineered for precision flow control in hydronic and water-based heating systems. Constructed from durable cast brass, this valve responds directly to sensed temperature changes — no external power source required — making it an ideal choice for reliable, self-contained system regulation.
Key Features
- Direct acting, temperature actuated operation — no external power required
- Cast brass body for corrosion resistance and long service life
- 115°F to 180°F heating point range for precise temperature-based flow control
- 6-foot capillary tube provides flexible bulb placement relative to the valve body
- Style 4 bulb: 11/16″ diameter x 3-1/4″ long for accurate temperature sensing
- 1/2″ NPT inlet/outlet connections for straightforward pipe integration
- 1/2″ NPT external fitting included for easy system hookup
Specifications
- SKU: V47AB-3
- Brand: Johnson Controls
- Connection Size: 1/2″ NPT
- Body Material: Cast Brass
- 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
- Actuation Type: Direct Acting
Applications
- Hydronic heating systems requiring temperature-based water flow regulation
- Boiler and chiller water circuits
- Commercial and industrial HVAC water systems
- Any application requiring self-contained, temperature-driven valve control
The V47AB-3’s direct acting design means the valve modulates water flow in direct response to the temperature sensed at the bulb — as temperature rises toward the set point, the valve opens or closes to maintain system balance. The 6-foot capillary gives installers the flexibility to position the sensing bulb at the optimal location in the system, while the cast brass construction ensures durability in demanding hydronic environments.
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