Carrier 330819-401 Service Valve

The Carrier 330819-401 is a genuine OEM Liquid Line Service Valve designed for HVAC refrigeration systems requiring a 3/8 inch connection. Engineered for Carrier, Bryant, and Payne residential and commercial units, this brass-body valve facilitates critical maintenance by allowing technicians to isolate the refrigerant charge within the condenser during system evacuations or part replacements. Its robust construction ensures a reliable, leak-proof seal under high-pressure conditions, maintaining the integrity of the refrigerant flow. As a veteran-grade refrigeration service valve, the 330819-401 is built for precision seated control, preventing moisture contamination and refrigerant loss during service intervals. Whether you are performing a seasonal tune-up or a major system repair, using this HVAC replacement part ensures full compatibility with factory specifications, maintaining optimal system efficiency and operational safety. This liquid line valve is an essential component for any contractor’s van, providing the durability needed for long-term field performance in demanding environments.

• OEM Compatibility: Specifically engineered for direct fitment in Carrier, Bryant, and Payne equipment to ensure factory-standard performance.
• Durable Construction: High-grade brass body resists corrosion and withstands the thermal stresses of brazing and high-pressure refrigerant cycles.
• System Isolation: Enables efficient pump-down procedures and simplifies liquid line maintenance without discharging the entire system.
• Leak Prevention: Precision-machined threads and seating surfaces provide a secure, airtight seal to prevent refrigerant leaks.

Is the Carrier 330819-401 compatible with R-410A systems?
Yes, this service valve is designed to handle the higher operating pressures associated with R-410A and other standard refrigerants used in modern Carrier HVAC equipment.

Does this valve come with the flare nut or service port cap?
The 330819-401 typically includes the main valve body with the 3/8" connection. It is standard practice for technicians to reuse or source compatible caps and nuts if not specifically included in the individual service kit.

Can this valve be used on the suction line?
No, this is a 3/8" Liquid Line Service Valve. Suction lines typically require larger diameter valves to handle vapor flow; always verify line size and system orientation before installation.

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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.