The Johnson Controls V47AA-1C is a temperature-actuated, modulating water valve designed for precise control of water flow in heating systems. As the temperature sensed by the remote bulb increases, the valve opens proportionally to maintain optimal system temperature. With a 3/8-inch pipe connection and a temperature range of 115°F to 180°F, the V47AA-1C is ideal for compact heating loops, compressor cooling, and heat exchanger regulation.
Technical Specifications
- Model: V47AA-1C
- Valve Type: Direct-acting, temperature modulating
- Pipe Size: 3/8 inch NPT
- Temperature Range (Opening Point): 115°F to 180°F
- Bulb Size: 11/16 inch diameter × 3-1/4 inch length
- Standard Bypass Orifice Diameter: 0.062 inch
- Maximum Water Pressure: 150 psi
- Maximum Water Temperature: 170°F
- Capillary Length: 6 feet (standard)
- Bulb Well (Ordered Separately): WEL18A-602R
Key Features
- Opens proportionally as sensed temperature rises
- Compact 3/8-inch valve size for small piping systems
- Includes bypass orifice to maintain minimal flow when closed
- Remote-mounted sensing bulb for flexible installation
- Reliable direct-acting performance without external power
Repair and Replacement Parts
- Seat Repair Kit: STT14A-600R
- Replacement Sensing Element: SET29A-622R
- Bulb Well (Order Separately): WEL18A-602R
Industry Applications
- Compressor jacket water cooling
- Heat exchanger regulation in small systems
- Process water heating systems
- HVAC terminal units with high-precision temperature control
- OEM and light industrial thermal management systems
Installation & Maintenance Notes
- Mount valve vertically with the spring cage facing upward
- Place sensing bulb in a representative temperature zone using the correct bulb well
- Avoid sharp bends in capillary tubing; protect against mechanical damage
- Periodically inspect for corrosion, scale, or valve sticking
- Ensure water quality is maintained to prevent debris buildup around the valve seat
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance.
| Pipe Size, in. |
Range (Opening Point) °F |
Bulb Size, in. (Dia length) |
Std Bypass Orifice Dia in. |
Seat Repair Kit | Replacement Sensing Element |
Bulb Well Number Order Separately |
| 3/8 | 115 to 180 Heating | 11/16 x 3 1/4 | 0.062 | STT14A-600R | SET29A-622R | WEL18A-602R |