Crown Engineering 58rl36 Red Line Gauge Glass 5/8 in 36 in

Product Description

The CROWN ENGINEERING 58rl36 is a Red Line gauge glass designed for use in boiler and steam system sight glass assemblies. This tubular glass component allows operators and service technicians to visually verify water or fluid levels in pressurized vessels and boilers at a glance. The red line running the length of the glass improves visibility under varying lighting conditions, making level readings faster and more accurate. With an outer diameter of 5/8 inches and a length of 36 inches, this gauge glass fits standard boiler gauge cocks and sight glass fittings of the appropriate size. Installation is typically performed by licensed plumbers, steamfitters, or boiler technicians.

This gauge glass is suited for residential and light commercial boiler applications where a 5/8-inch OD sight glass tube is required. It is commonly installed in hot water and steam boilers as part of the water level gauge assembly. The 36-inch length allows it to be cut to the required length in the field, providing flexibility across a range of boiler configurations and gauge frame sizes.

Key Features

• Red line stripe improves fluid level visibility in boiler sight glass assemblies
• 5/8 inch outer diameter fits standard gauge cock fittings of that size
• 36 inch length can be field-cut to fit various gauge frame heights
• Designed for use in hot water and steam boiler water level gauges
• Tubular glass construction compatible with pressurized vessel sight glass applications

Compatibility

Designed as a replacement gauge glass for boiler and pressurized vessel sight glass assemblies requiring a 5/8-inch OD tubular glass tube. Verify gauge cock fitting size and maximum working pressure rating before installation.

Installation Notes

Gauge glass replacement should be performed by a licensed plumber, steamfitter, or qualified boiler technician. Always shut down the boiler and allow the system to depressurize and cool completely before removing the existing glass. Isolate the gauge cocks above and below the sight glass before disassembly. Handle glass tubes with care to avoid stress fractures, and inspect gauge cock packings and washers for wear during each glass replacement.

Technical Specifications

• Outer Diameter: 5/8 inches
• Length: 36 inches
• Glass Type: Red Line Gauge Glass

Standard Information

• Brand: CROWN ENGINEERING
• Manufacturer Part Number: 58rl36