Sight glasses: Moisture and liquid indicators
100% tested: max leak 1 gram/year
IGLOO sight glasses are tested one-by-one against leakage with helium up to 70bar (1,015psi).
We recommend a Maximum Working Pressure MWP of 48bar (700psi), even if during tests conducted in accredited labs our sight glasses resisted at the impressive pressure of 290bar (4,200psi) without explode.
IGLOO sight glasses are suitable for all the most common CFC, HCFC and HFC refrigerants such as R22, R134a, R404A, R410A, R507C and Carbon Dioxide CO2 R744 (sub-critical). Not suitable for ammonia R717.