York S1-700078 Sight Glass 320735-701 Check the valve manufacturer on

Check the valve manufacturer on the furnace before proceeding

those lines and the nut/sleeve assembly are sold separately

The motor uses standard multi-tap leads

this Williams replacement part is engineered to meet OEM specifications for exact fit and performance

York S1-700078 Sight Glass 320735-701 Check the valve manufacturer onThe York S1 700078 Sight Glass (Model SA 13) is a critical diagnostic component designed for precision refrigerant flow monitoring in commercial and residential HVAC systems. Engineered for high pressure environments, this SA 13 sightglass provides a high visibility interface to inspect for bubbles, flash gas, and moisture contamination within the liquid line. Featuring a robust fiberglass body and a clear view window, it allows technicians to verify