Conbraco 98-34R-48 Liquid Level Gage Glass 140 Psi

Product Description

The CONBRACO 98-34R-48 is a standard-grade liquid level gage glass designed to provide a direct visual indication of fluid level inside boilers, tanks, and pressure vessels. Rated for a maximum working pressure of 140 psi, this gage glass fits equipment requiring a 0.75-inch outer diameter glass tube at a 48-inch length. It is installed by licensed plumbers, stationary engineers, and qualified HVAC-R technicians performing boiler service or vessel maintenance where accurate, real-time level monitoring is required.

This gage glass is suited for residential and light commercial boilers as well as industrial tanks and pressure vessels operating within its 140 psi pressure rating. The standard-grade construction is appropriate for typical water and fluid level monitoring applications where high-visibility level indication is needed at the vessel wall. Installers should verify that the working pressure and glass dimensions match the existing gage glass assembly before installation.

Key Features

• 140 psi maximum working pressure rating suitable for standard boiler and pressure vessel service
• Standard-grade gage glass construction for reliable fluid level visibility
• 0.75-inch outer diameter glass fits corresponding standard gage glass fittings and end connections
• 48-inch length accommodates taller vessels and boiler sight glass assemblies
• Single-piece glass tube provides unobstructed full-length level view

Compatibility

Designed as an OEM-style replacement gage glass for standard boiler sight glass assemblies and pressure vessel level indicators requiring a 0.75-inch outer diameter, 48-inch glass tube rated to 140 psi working pressure.

Installation Notes

Gage glass replacement is typically performed by a licensed plumber or stationary engineer. Always depressurize and fully drain the vessel or boiler section before removing the existing glass tube. Handle the glass carefully to avoid stress cracks; do not overtighten end fittings or packing nuts, as excess clamping force can fracture the tube. Verify that replacement seals, packing, and end fittings are in good condition before returning the system to service.