B K Mueller 520-433HN 3/4x1/2x1/2 Black Double Reducing Tee 25pk

Product Description

The B K Mueller Industries 520-433HN is a black double reducing tee fitting designed for threaded pipe assemblies in plumbing, gas distribution, and mechanical piping systems. The run measures 3/4 inches with dual 1/2 inch branch and outlet connections, allowing flow to be split or redirected while stepping down pipe size in a single fitting. The black iron finish is standard for gas piping applications and meets typical requirements for above-ground and below-ground service where coatings are specified. Plumbers, pipefitters, and mechanical contractors are the primary installers of this fitting type.

This double reducing tee is suited for residential and light commercial gas piping, hydronic heating distribution, and industrial compressed-air or fluid systems that require a size transition at a branch point. The 25-piece package quantity makes it practical for stocking service trucks, supply rooms, or job-site material drops where multiple fittings of the same configuration are consumed on a single project. It is sold by the package of 25 each.

Key Features

• Double reducing configuration steps the run from 3/4 inches down to 1/2 inches on both branch and outlet in one fitting
• Black iron finish standard for gas and hydronic piping applications
• Threaded connections compatible with standard NPT pipe thread systems
• Sold in a package of 25 fittings for job-site and stock efficiency

Compatibility

Designed as an OEM-style replacement and standard stock fitting for threaded black iron pipe systems using 3/4 inch run and 1/2 inch branch and outlet connections.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable code requirements including IFGC for gas piping and IPC for plumbing systems. Shut off gas or fluid supply and depressurize the line completely before removing any existing fitting or making new connections. Apply an appropriate thread sealant or pipe-thread compound rated for the service medium before assembly. Do not over-tighten threaded connections; hand-tight plus wrench turns to the fitting manufacturer and code specifications is the accepted practice.