The Johnson Controls V47NB-1C is a reverse-acting temperature-actuated modulating water valve used for bypass operation. The valve opens on a temperature drop, with a factory-set opening point of 105°F that helps maintain reliable cooling performance.
Technical Specifications
- Part Number: V47NB-1C
- Series: V47N Temperature Actuated Modulating Valve
- Valve Type: Reverse-Acting, Commercial
- Control Action: Opens on Temperature Decrease
- Connection: 1/2″ Screw
- Temperature Range: 85 to 155°F
- Maximum Opening Point: 105°F (Factory Set)
- Bulb Size: 11/16″ x 3-1/4″
Key Features and Functionality
- Reverse Action: Opens on temperature drop to regulate bypass flow.
- Compact Bulb: 11/16 x 3-1/4″ sensing ensures quick response.
- Threaded Connection: A 1/2″ screw fitting allows for a secure installation.
- Fixed Setpoint: Factory opening at 105°F provides consistent control.
- Brass Body: Durable construction maintains reliable service life.
Compatible Components and Related Parts
- Seat Repair Kit: STT15A-602R
- Bulb Well Number: WEL18A-601R (Monel)
Industry Applications
- Bypass Systems: Diverts water flow during low-temperature conditions.
- Heat Pumps: Operates in parallel with direct-acting valves.
- Cooling Loops: Stabilizes system temperature during operation cycles.
- Water Systems: Assists in regulating process water temperature.
Installation and Operational Notes
- Flush liquid lines to clear debris before installation.
- Connect lines in the direction of the arrow on the valve body.
- Prevent the bulb and capillary from contacting metal surfaces.
- Avoid mounting the bulb above the liquid level or in air pockets.
- Mount vertically with the bellows facing downward.
Series Information
Johnson Controls V47N Series Reverse-Acting Valve
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