Conbraco 98-34P-30 Red Line Liquid Level Gage Glass

Product Description

The CONBRACO 98-34P-30 is a Red Line grade liquid level gage glass designed for direct visual monitoring of fluid levels in boilers, tanks, and process vessels. Rated for a maximum working pressure of 230 psi, this gage glass features the red line stripe characteristic of high-visibility sight glass applications where clear fluid-level reading is critical. It has an outer diameter of 0.75 inches and a length of 30 inches. Installation is performed by licensed plumbers, pipefitters, or stationary engineers working on boiler and pressure vessel systems in residential, commercial, and industrial settings.

This gage glass is suited for boiler installations, hot water storage tanks, and pressurized process vessels requiring reliable, continuous liquid level indication. The Red Line grade designation identifies it as a borosilicate or equivalent sight glass type commonly specified for steam and hot water boiler service. Facilities maintenance technicians and boiler service professionals will recognize this as a standard replacement or new-install sight glass for pressure vessel service up to 230 psi.

Key Features

• 230 psi maximum working pressure rating for boiler and pressure vessel service
• Red Line grade construction for high-visibility fluid level monitoring
• 0.75 inch outer diameter fits standard gage glass fittings of that size
• 30 inch length accommodates tall tank or boiler column sight glass assemblies
• Single-piece glass tube for straightforward field replacement

Compatibility

Designed as an OEM-style replacement or new-install gage glass for boiler sight glass columns and pressure vessel level indicators accepting a 0.75 inch outer diameter, 30 inch Red Line grade tube rated to 230 psi.

Installation Notes

Gage glass replacement should be performed by a qualified plumber, pipefitter, or boiler technician. Before removing the old glass, isolate the vessel, depressurize the system fully, and allow it to cool to a safe handling temperature. Handle the glass tube carefully to avoid nicks or scratches that can cause stress fractures under pressure. Comply with applicable local boiler codes and ASME pressure vessel standards when servicing sight glass assemblies.