The Johnson Controls V46AA-51 is a direct-acting, pressure-actuated modulating valve designed to control refrigerant head pressure in water-cooled condensers. It uses a 3/8″ NPT threaded connection and commercial open-on-rise action for responsive pressure-based modulation.
Technical Specifications
- Part Number: V46AA-51
- Series: V46 Pressure-Actuated Modulating Valve
- Valve Type: Open on Rise (Commercial)
- Control Action: Direct-Acting
- Connection: 3/8″ NPT threaded
- Body Material: Cast Brass
- Maximum Opening Point: 70 to 260 psi
- Maximum Temperature: 170 °F (77 °C)
- Pressure Connection: 1/4″ Flare Fitting
Key Features and Functionality
- No Sliding Parts: Prevents clogging or wear in water passages.
- Corrosion-Resistant Internals: Extends service life in wet environments.
- Range Spring Access: Allows manual flushing when needed.
- Field-Serviceable Body: Can be opened without removing the valve.
- Pressure-Balanced Design: Holds setpoint under pressure changes.
Compatible Components and Related Parts
- STT14A-600R, SEP91A-600R, SEC37A-601R1
Industry Applications
- HVAC Condensers: Regulate flow to maintain pressure.
- Refrigeration Units: Adjust water flow based on refrigerant pressure.
- Cooling Systems: Helps balance condenser circuit performance.
- Process Equipment: Maintains cooling in industrial systems.
Compliance and Approvals
- ISO 7 / DIN 2999-Rc
- ISO 228 / DIN 259-Rp
- Nominal specs meet Johnson Controls and industry standards
- Contact JCI for use outside rated conditions
Installation and Operational Notes
- Ensure the supply voltage matches the coil rating before powering up.
- Install with the coil upright to ensure stable performance.
- Keep media clean—flush lines to remove particulates.
- Stay within pressure and temperature limits at all times.
- Verify disc material is compatible with the intended media.
Series Information
We ship this product worldwide! Delivery is normally stock.
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