Description
Conbraco Industries 9858R-12 – 5/8″ x 12″ Regular Sight Glass
The Conbraco Industries 9858R-12 is a 5/8″ x 12″ regular-length sight glass designed for use in hydronic heating and steam systems. Engineered to provide clear, reliable visual indication of fluid levels, this sight glass is an essential component for boiler operators and HVAC technicians who need to monitor system water or steam levels at a glance.
Conbraco Industries is a trusted name in the hydronic and steam industry, manufacturing high-quality valves, sight glasses, and system accessories built to withstand the demands of commercial and residential heating applications.
Key Features
- Size: 5/8″ diameter x 12″ length – regular configuration
- Designed for use in hydronic boiler and steam system sight glass assemblies
- Provides clear, unobstructed visual monitoring of fluid or steam levels
- Compatible with standard Conbraco sight glass gauge fittings and frames
- Durable glass construction built to handle typical system operating temperatures and pressures
- Easy replacement for existing sight glass assemblies
Typical Applications
- Hydronic boiler water level gauges
- Steam boiler sight glass assemblies
- Replacement glass for Conbraco 9858R series gauge sets
- Commercial and residential heating system maintenance
Why Choose Conbraco?
Conbraco Industries has a long-standing reputation for producing reliable, code-compliant hydronic and steam components. The 9858R-12 sight glass is a direct-replacement part that helps keep your system running safely and efficiently by maintaining clear visibility of critical fluid levels.







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