Description
Overview
The Johnson Controls V47AS-1 is a direct acting, temperature actuated water regulating valve engineered for precise hydronic heating control. Built with a durable cast iron body and a 2″ ASME flange connection, this valve is well-suited for commercial and industrial hydronic systems where reliable temperature-based flow regulation is essential.
How It Works
The V47AS-1 operates on a direct-acting principle: as the sensing bulb detects rising water temperature, the valve modulates flow to maintain system balance within the set heating point range. The remote sensing bulb is connected via a 6-foot capillary tube, allowing the bulb to be positioned precisely at the point of measurement without relocating the valve body.
Key Specifications
- SKU: V47AS-1
- Brand: Johnson Controls
- Valve Body Material: Cast Iron
- Connection Type: 2″ ASME Flange
- Heating Point Range: 115°F to 180°F
- Actuation Type: Direct Acting, Temperature Actuated
- Capillary Length: 6 feet
- Bulb Style: Style 4
- Bulb Dimensions: 11/16″ diameter x 10″ long
- External Fitting: 1/2″ NPT
Features & Benefits
- Direct acting design provides reliable, self-contained temperature-based flow control without external power
- 2″ ASME flange connection ensures secure, leak-resistant installation in commercial piping systems
- Cast iron body offers long-lasting durability in demanding hydronic heating environments
- Wide heating point range of 115°F to 180°F accommodates a variety of hydronic system setpoints
- 6-foot capillary allows flexible remote bulb placement for accurate sensing at the ideal system location
- Style 4 bulb (11/16″ diameter, 10″ long) provides responsive and accurate temperature detection
- 1/2″ NPT external fitting simplifies integration with standard hydronic piping configurations
Typical Applications
- Commercial and industrial hydronic heating systems
- Hot water temperature regulation in boiler circuits
- Water-to-water heat exchangers
- Process heating applications requiring automatic temperature-actuated flow control
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