Description
The Johnson Controls V47AA-2 is a direct acting, temperature actuated water regulating valve engineered for reliable heating system control in commercial and industrial HVAC applications. Constructed from durable cast brass, this valve automatically modulates water flow in response to temperature changes sensed by its remote bulb, eliminating the need for external power or complex controls.
Key Features
- Direct acting, temperature actuated operation — no external power required
- Cast brass body for long-lasting corrosion resistance and durability
- 160°F to 230°F heating point temperature range for precise system control
- 3/8″ NPT main valve connection for easy inline installation
- 1/2″ NPT external fitting for flexible system integration
- 6-foot capillary tube provides remote sensing flexibility
- Style 4 bulb: 11/16″ diameter x 3-1/4″ long for accurate temperature response
Specifications
- SKU / Model: V47AA-2
- Brand: Johnson Controls
- Valve Connection: 3/8″ NPT
- External Fitting: 1/2″ NPT
- Temperature Range: 160°F to 230°F
- 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 V47AA-2 is ideal for use in hydronic heating systems, boiler water temperature regulation, and heat exchanger control where automatic, self-contained temperature-based water flow modulation is required. The remote bulb and capillary design allow the sensing element to be positioned precisely at the point of temperature measurement, while the valve body can be installed in the water line at a convenient location. The 160–230°F operating range makes it well suited for hot water heating and steam condensate applications.
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