What is the minimum pressure rating required for a liquid line filter dryer installed on an R-410A system?

The minimum pressure rating required for a liquid line filter dryer installed on an R-410A system is 600 psig. This rating is crucial because R-410A operates at higher pressures compared to many other refrigerants. Specifically, during normal operating conditions, R-410A can reach pressures that exceed 400 psig.

Having a filter dryer rated at 600 psig ensures that it can safely handle these elevated pressures without the risk of failure or rupturing. Additionally, using components that meet or exceed the required pressure specifications helps maintain the integrity and safety of the refrigeration system throughout its service life. Properly rated components are also a critical aspect of compliance with industry standards and regulations, ensuring efficient and safe operation of HVAC systems using R-410A refrigerant.

In contrast, options indicating lower pressure ratings do not provide sufficient safety margins for R-410A applications, where the potential pressures could exceed those limits, leading to possible hazards.