A sight glass is commonly installed in the liquid line of systems that use a thermostatic expansion valve (TXV) metering device. And it allows technicians to view the condition of the refrigerant at the point where it is installed.
A sight glass is commonly installed in the liquid line of systems that use a thermostatic expansion valve (TXV) metering device. And it allows technicians to view the condition of the refrigerant at the point where it is installed.