The Johnson Controls V46AA-18 is a direct-acting, pressure-actuated modulating valve for commercial applications. With an operating range of 70 to 260 psi and a 36 in. capillary sweat connection, it regulates flow as pressure increases to maintain stable system operation.
Technical Specifications
- Part Number: V46AA-18
- 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: 36 in. Capillary with Sweat Connection
Key Features and Functionality
- Non-Restrictive Design: No sliding parts minimize fouling in water passages.
- Corrosion Resistance: Wetted materials resist scale and chemical attack.
- Accessible Spring: The range spring allows for quick adjustment and flushing.
- Serviceable Body: Take-apart construction allows maintenance without pump-down.
- Balanced Pressure: The bellows design maintains a setpoint under varying loads.
Compatible Components and Related Parts
-
STT14A-600R, SEP91A-600R, SEC37A-601R1
Industry Applications
- Refrigeration Systems: Regulates condenser water flow for stable operation.
- HVAC Equipment: Maintains pressure balance in cooling circuits.
- Chiller Plants: Modulate condenser water under varying load.
- Process Cooling: Controls media flow in closed pressure systems.
Compliance and Approvals
- ISO 7 / DIN 2999-Rc
- ISO 228 / DIN 259-Rp
- Nominal specs meet Johnson Controls & industry standards
Installation and Operational Notes
- Flush condenser lines to remove dirt, scale, or debris.
- Mount the valve vertically on the inlet, with the spring housing upward.
- Connect the refrigerant line to the bellows using 1/4 in. tubing.
- Adjust the opening screw while the system runs under load.
- Flush valve manually to clear sediment; adjustment remains intact.
Series Information
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