Sight Glass Sight Glass SYJ R290
Sight glasses are installed after the filter drier in liquid line of refrigerating systems, in order to observe
property changes of the refrigerant (liquid/vapor) and to indicate the moisture level by colors. All the Sight
Glasses listed in this datasheet can be installed in system using flammable refrigerants HFO (categories A2* and A2L*), and Hydrocarbons HC (category A3*).