Description
Overview
The Johnson Controls V47AC-8 is a direct acting, temperature actuated water regulating valve engineered for reliable heating system performance. Built with a durable cast brass body and a 3/4″ NPT connection, this valve automatically modulates water flow in response to temperature changes — no external power source required. It is an ideal solution for hydronic heating applications where precise, self-contained temperature-based flow control is essential.
Key Features
- Direct acting, temperature actuated operation — no external power required
- Cast brass body construction for durability and corrosion resistance
- 3/4″ NPT inlet/outlet connections for standard piping compatibility
- 75°F to 135°F heating point temperature range for accurate setpoint control
- 6-foot capillary tube for flexible remote bulb placement
- Style 4 sensing bulb: 11/16″ diameter x 3-1/4″ long for responsive temperature sensing
- 1/2″ NPT external fitting for easy installation and integration
Specifications
- SKU: V47AC-8
- Brand: Johnson Controls
- Connection Size: 3/4″ NPT
- External Fitting: 1/2″ NPT
- Temperature Range: 75°F to 135°F (Heating)
- Capillary Length: 6 feet
- Bulb Style: Style 4
- Bulb Dimensions: 11/16″ diameter x 3-1/4″ long
- Body Material: Cast Brass
- Actuation Type: Direct Acting
Application
The V47AC-8 is designed for use in hydronic heating systems where water flow must be regulated based on sensed temperature. The remote bulb and capillary assembly allow the sensing element to be positioned directly in the water line or immersion well, while the valve body can be mounted in a convenient location. This makes it well suited for boilers, heat exchangers, and other hydronic heating equipment requiring automatic temperature-based flow regulation.
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