The Johnson Controls V46ND-2 is a reverse-acting, pressure-actuated modulating valve for bypass and heat pump service. It has a 1″ NPT threaded connection and a 40–100 psi control range for stable low-pressure regulation.
Technical Specifications
- Part Number: V46ND-2
- Series: V46N Pressure-Actuated Modulating Valve
- Valve Type: Commercial
- Control Action: Reverse Acting
- Connection: 1″ NPT threaded
- Opening Point Range: 40 to 100 psi
- Pressure Connection:
- 30″ capillary with 1/4″ flare nut
- Schrader valve depressor
Key Features and Functionality
- Reverse Response: Opens as system pressure decreases.
- Low-Pressure Range: Operates reliably within a range of 40 to 100 psi.
- Threaded End: Easy installation with a 1″ NPT joint.
- Capillary Assembly: 30″ sensing tube provides remote pressure input.
- Service Options: Field maintenance supported with seat and power element kits.
Compatible Components and Related Parts
- Seat Repair Kit: STT17A-609R
- Replacement Power Elements: SEP91A-603R, SEC99AA-36C
Industry Applications
- Bypass Loops: Maintains water flow during bypass operation.
- Heat Pump Units: Regulates refrigerant in reverse-cycle mode.
Installation and Operational Notes
- Confirm that system pressure is within the range of 40–100 psi.
- Apply sealant to 1″ NPT threads before installation.
- Route capillary to avoid vibration and sharp bends.
- Stay within specified limits to prevent malfunction.
- Check the flare nut joint before startup.
Series Information
Johnson Controls V46N Series Reverse-Acting Valve
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