Replacing the set ensures consistent system reliability

Helps protect critical heat exchangers and coils from damage caused by frequent equipment cycling in cold climates

and irrigation pumps

a safety requirement for many PTAC installations to ensure the unit shuts down if the cord is compromised or pinched

For inductive loads

Mueller Industries A15099 Seal Cap Sub Assembly 319848-301 Replacing the set ensures consistentThe Mueller Industries A15099 Seal Cap Sub Assembly is a precision engineered brass service valve cap designed for high pressure refrigeration and HVAC applications. Often cross referenced as A 15099, this heavy duty OEM replacement part is critical for maintaining system vacuum and preventing refrigerant loss at service ports. Built by Mueller Streamline Company, the assembly features a 1 1 16" thread size and a 1 1 4" outer diameter, providing a