Replacing the set ensures consistent system reliability

or Exhaust Duct Temperature (EDT) sensor depending on its placement within the air handler or ductwork

it may fit other systems requiring a 100-155°F auto-reset switch

0 ppm or less

Aluminum Construction: Utilizes advanced aluminum fin and tube design to eliminate corrosive pitting and extend service life

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