Conbraco 98-34P-20 Red Line Liquid Level Gage Glass

Product Description

The CONBRACO 98-34P-20 is a Red Line grade liquid level gage glass rated for a maximum working pressure of 260 psi. This gage glass is installed on boilers, pressure vessels, and liquid storage tanks to provide a direct visual indication of fluid level. The Red Line designation identifies a distinct stripe or coloring embedded in the glass that improves readability under operating conditions. It fits a 0.75 inch outer diameter gauge glass opening and is sized at 20mm by 20 inches. Installation is typically performed by licensed plumbers or stationary engineers during system commissioning or gage replacement service.

The 98-34P-20 is suited for residential and light commercial boiler systems as well as industrial pressure vessels where a reliable, direct-reading liquid level indicator is required. The 260 psi working pressure rating makes it appropriate for steam and hot water heating applications where operating pressures fall within that range. The Red Line grade glass provides improved contrast against the fluid inside the column, making level readings faster and more accurate in field conditions.

Key Features

• 260 psi maximum working pressure rating for use on pressurized boilers and vessels
• Red Line grade glass with enhanced visual contrast for quick, accurate level readings
• 0.75 inch outer diameter fits standard gage glass fittings of that bore size
• 20mm by 20 inch sizing provides compatibility with common level gauge assemblies
• Single-piece package quantity allows replacement of individual gage glass sections

Compatibility

Designed as an OEM-style replacement gage glass for pressure vessel and boiler liquid level gauge assemblies requiring a 0.75 inch outer diameter Red Line grade glass rated to 260 psi.

Installation Notes

Gage glass replacement should be performed by a licensed plumber or boiler technician. Before removing the old glass, shut off isolation valves on both the upper and lower gage cocks and relieve all pressure from the column. Handle gage glass carefully to avoid stress cracks or chips at the cut ends, which can cause failure under pressure. Installation must comply with applicable local boiler codes and ASME requirements for the vessel class.