The Carrier HR81LD001 Flow Switch is a critical monitoring component designed for precise fluid detection in high-demand HVAC and process cooling systems. As the OEM replacement for HR81LG005, this switch ensures seamless integration with legacy Carrier industrial chillers, including the 30GX and 30HXA series. Engineered for mechanical reliability, it features a rugged stainless steel body paired with durable brass wetted components, capable of withstanding system pressures up to 150 PSI. This liquid flow switch utilizes a high-sensitivity paddle mechanism to detect flow rates within a 0.5 to 15 GPM range, providing reliable HVAC flow sensor feedback to prevent compressor slugging or heat exchanger freeze-ups. With a standard 1/2 inch NPT female connection, it allows for straightforward installation into existing piping manifolds. For contractors managing Carrier flow switch troubleshooting, this genuine part is the standardized choice to maintain factory specifications and ensure continuous equipment protection.

• Exact OEM Compatibility: Serves as the direct technical successor to the Carrier HR81LG005 flow switch, ensuring correct electrical and mechanical fit.
• Industrial-Grade Construction: Built with stainless steel and brass to resist corrosion in hydronic piping systems and water treatment applications.
• Wide Operating Range: Accurately monitors flow between 0.5 and 15 GPM, ideal for varying chiller fluid velocity requirements.
• High Pressure Resilience: Rated for up to 150 PSI, making it suitable for both residential heating and heavy-duty commercial HVAC maintenance.

Is the HR81LD001 compatible with older HR81LG005 installations?
Yes, the Carrier HR81LD001 is the designated replacement for the discontinued HR81LG005, sharing the same 1/2" NPT connection and sensing parameters.

Can this flow switch be used in refrigeration and water treatment?
This HVACR part is designed for versatility and is commonly applied in refrigeration racks, process cooling, and water flow monitoring systems.

What is the primary function of this switch in a Carrier chiller?
It functions as a safety interlock, ensuring that fluid is moving through the heat exchanger before the system allows the cooling stages to engage.

Item is Non Cancelable / Non Returnable

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.