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The YELLOW JACKET 41108 is a refrigeration sight glass designed for use in HVAC and refrigeration service work. A sight glass allows technicians to visually monitor refrigerant flow and detect moisture or vapor in a system's liquid line, providing a quick visual indication of system charge condition. This component is a standard tool in the refrigeration technician's service kit and is commonly used during system commissioning, troubleshooting, and maintenance procedures.
The 41108 is suited for use in residential and light commercial refrigeration and air conditioning systems. It is typically installed in the liquid line between the condenser and the metering device, where a technician can observe refrigerant state and identify potential undercharge or moisture contamination. Licensed HVAC technicians and refrigeration mechanics are the primary installers of this component.
Designed as an OEM-style service sight glass for use in residential and light commercial refrigeration and air conditioning liquid line applications.
Installation should be performed by a licensed HVAC or refrigeration technician in accordance with applicable codes. Recover all refrigerant from the system before cutting into the liquid line to install or replace the sight glass. Ensure all fittings are properly brazed or connected and leak-tested before recharging the system. Follow EPA Section 608 requirements for refrigerant handling throughout the service procedure.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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