Sight Glass & Moisture Indicator – 3/8" Sweat Connection Monitor refrigerant flow and moisture levels with confidence. This hermetic sight glass features a large, wide-angle viewing window for clear visibility during installation and maintenance. Solid copper sweat connections ensure reliable, leak-proof performance with CFC, HCFC, and HFC refrigerants. Essential for mini split system installations where quick diagnostics and system verification are critical to job completion.
