A/C Diagnostic Sight Glass kit

Our A/C Diagnostic Sight Glass kit series features a visual inspection window that allows direct observation of refrigerant flow and system operating conditions. The product includes a built-in refrigerant condition chart that visually illustrates the types of contaminants that may be observed through the sight glass, helping technicians quickly assess system health; a ball valve design enables leak-free control, with extracted refrigerant able to be reinjected back into the system for safe, environmentally responsible operation.

The sight glass features a moisture indicator that changes color to visually show the moisture content in the refrigerant, providing real-time monitoring of system dryness, and is available in sizes from 1/4" to 3/4" to fit different system requirements. This series is widely used for refrigerant condition monitoring and contaminant inspection across A/C, refrigeration, and commercial cooling equipment — an ideal toolkit for professional technicians performing system diagnostics and oil replenishment work.