Collection:Replacement sight glasses for flow indicators

Replacement sight glasses for flow indicators replace the Pyrex glass window of an installed brass sight glass flow indicator. A scratched or broken glass is changed without replacing the indicator body. Each glass belongs to one connection size of the indicator, from G 1/4" to G 1 1/2". Choose the glass for the same connection size as the installed indicator. The glass suits the same liquids and temperatures as the indicator: water and mild water-based liquids up to +90 °C (≈194 °F).

The glasses fit only the brass indicators, not the polycarbonate version. For a complete new indicator, choose a flow indicator.