RLS ODM Sight Glasses are designed to work with RLS press fittings and show at a glance whether the refrigerant in a commercial HVAC or refrigeration system is wet or dry. Compared to competitive models, RLS Sight Glasses offer several key advantages, including:

• A longer overall tube length – making it easier on the installer when connecting with RLS fittings and press tools
• A higher pressure rating (700 PSIG compared to 650 PSIG)
• All copper stubs, rather than copper coated steel

Sizes Available: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8" and 1-1/8"