Liebert 1C21207P5
The Liebert 1C21207P5 is a high-performance Low Ambient Control Valve engineered to maintain critical head pressure in air-cooled condensing units during low-temperature operations. Specifically designed as the direct replacement for the Y1188-LAC-4-180, this three-way modulating valve responds to discharge pressure to ensure consistent refrigerant flow to the expansion device. By backing up liquid refrigerant into the condenser, it effectively reduces condenser capacity and prevents the suction pressure drops that lead to evaporator icing and compressor short-cycling. Built for HVAC system diagnostics and repair, this 180 PSI head pressure control is essential for data centers and mission-critical environments where stable cooling is required year-round. This HVAC replacement part features 1/2-inch ODF solder connections and is compatible with common refrigerants, including R-22 and R-407C, providing a robust solution for commercial HVAC repair and maintenance.
Key Benefits:- Precise Head Pressure Regulation: Maintains a 180 PSIG setting to ensure the thermostatic expansion valve (TXV) receives the liquid pressure required for optimal evaporator feeding.
- Direct OEM Compatibility: Engineered as a drop-in replacement for Y1188-LAC-4-180, ensuring exact fitment and reliable performance in Liebert and Vertiv systems.
- Enhanced System Reliability: Prevents low-pressure trips and erratic fan cycling by modulating refrigerant flow based on real-time discharge pressure.
- Robust Construction: Features a durable brass body and 1/2-inch ODF connections for secure, leak-free integration into the liquid line.
- Versatile Refrigerant Support: Optimized for use with R-22, R-407C, and other high-pressure blends common in legacy and modern cooling infrastructure.
- How do I know if my low ambient control valve is failing? If you observe low head pressure despite a correct refrigerant charge when ambient temperatures are below 70Ā°F, or if the line between the valve and the receiver remains cold, the internal bellows or piston may be compromised.
- Is the Liebert 1C21207P5 adjustable in the field? No, like most headmaster valves, this unit is factory-set to 180 PSI to provide consistent, non-drifting control.
- Does this valve replace the LAC-4-180? Yes, the 1C21207P5 is the designated service replacement for the LAC-4-180 and the Y1188-LAC-4-180 specifications.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Liebert 1C21207P5 is a high-performance Low Ambient Control Valve engineered to maintain critical head pressure in air-cooled condensing units during low-temperature operations. Specifically designed as the direct replacement for the Y1188-LAC-4-180, this three-way modulating valve responds to discharge pressure to ensure consistent refrigerant flow to the expansion device. By backing up liquid refrigerant into the condenser, it effectively reduces condenser capacity and prevents the suction pressure drops that lead to evaporator icing and compressor short-cycling. Built for HVAC system diagnostics and repair, this 180 PSI head pressure control is essential for data centers and mission-critical environments where stable cooling is required year-round. This HVAC replacement part features 1/2-inch ODF solder connections and is compatible with common refrigerants, including R-22 and R-407C, providing a robust solution for commercial HVAC repair and maintenance.
Key Benefits:- Precise Head Pressure Regulation: Maintains a 180 PSIG setting to ensure the thermostatic expansion valve (TXV) receives the liquid pressure required for optimal evaporator feeding.
- Direct OEM Compatibility: Engineered as a drop-in replacement for Y1188-LAC-4-180, ensuring exact fitment and reliable performance in Liebert and Vertiv systems.
- Enhanced System Reliability: Prevents low-pressure trips and erratic fan cycling by modulating refrigerant flow based on real-time discharge pressure.
- Robust Construction: Features a durable brass body and 1/2-inch ODF connections for secure, leak-free integration into the liquid line.
- Versatile Refrigerant Support: Optimized for use with R-22, R-407C, and other high-pressure blends common in legacy and modern cooling infrastructure.
- How do I know if my low ambient control valve is failing? If you observe low head pressure despite a correct refrigerant charge when ambient temperatures are below 70Ā°F, or if the line between the valve and the receiver remains cold, the internal bellows or piston may be compromised.
- Is the Liebert 1C21207P5 adjustable in the field? No, like most headmaster valves, this unit is factory-set to 180 PSI to provide consistent, non-drifting control.
- Does this valve replace the LAC-4-180? Yes, the 1C21207P5 is the designated service replacement for the LAC-4-180 and the Y1188-LAC-4-180 specifications.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
