Mastercool R134A/R1234yf AC System Visual Inspection Sight Glass.

 

Features

• Allows user to visually inspect the refrigerant in any R134a or R1234yf system and identify excess dye, oil or debris.
• Allows the user to extract a small portion of the refrigerant for actual visual inspection.
• Leak free, ball valve controlled and will allow the refrigerant extracted for the visual inspection to be deposited back into the system.