Mueller 423-520771 A423 Fire Hydrant 5-1/4 5-6

Product Description

The MUELLER 423-520771 is a dry-barrel fire hydrant built to the A423 model specification. It carries a 5-1/4 inch valve size designation and is configured for a 5- to 6-foot bury depth, as indicated by the 5-6 depth code. The color code OR identifies a specific nozzle or body finish variant used by waterworks utilities and municipalities for field identification. This hydrant is specified and installed by licensed waterworks contractors and municipal water distribution crews.

The A423 series fire hydrant is used in municipal water distribution systems, commercial site development, and industrial facility waterworks applications. The 5-1/4 inch main valve size is a common specification for high-flow fire protection service. The 5-6 burial depth designation makes this unit suitable for installations where the water main sits at a depth requiring a hydrant barrel in the 5- to 6-foot range. The OR color code should be confirmed against the local utility or project specification before installation to ensure the correct variant is ordered.

Key Features

• A423 model designation - Mueller dry-barrel fire hydrant series
• 5-1/4 inch main valve size for high-flow fire protection service
• 5-6 foot burial depth configuration for mid-range main depths
• OR color code for field and utility identification purposes
• Sold as a single unit

Compatibility

Designed for use in municipal and commercial waterworks systems requiring a dry-barrel fire hydrant with a 5-1/4 inch valve size and a 5- to 6-foot burial depth. Confirm the OR color code designation against project or utility specifications before ordering.

Installation Notes

Fire hydrant installation must be performed by licensed waterworks or utility contractors in accordance with local municipal standards and AWWA guidelines. The water main must be shut off and the system depressurized before hydrant installation or replacement. Verify burial depth, connection size, and flange or mechanical joint type against the site-specific design drawings prior to ordering. Do not alter the hydrant barrel length in the field.