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Hexagonal bronze pipe bushing, threaded ends, matte finish

Legend Valve

Legend Valve 310-506NL No Lead Hex Bushing 4" x 2-1/2

SKU CH-TR2M-K6SPW

No-lead cast bronze hex bushing reduces 4-inch male pipe thread to 2-1/2-inch female thread for potable water systems

  • No-lead cast bronze protects water quality
  • 4-inch to 2-1/2-inch size adapts pipe diameters
  • Hex design allows secure wrench tightening
  • MNPT and FNPT threads ensure reliable connections
  • California Prop 65 warning discloses chemical risks

Plumbing Reducer for Lead-Free Systems

This 4-inch by 2-1/2-inch hex bushing connects mismatched NPT threads in potable water lines. The no-lead cast bronze body meets California Proposition 65 requirements for drinking water safety. Installers use it to step down pipe sizes without introducing lead into the supply.

Hex Wrench Flats and Thread Seal Reliability

External hex flats allow a standard pipe wrench to apply torque without rounding the fitting. Tapered MNPT and FNPT threads create a mechanical seal that tightens under pressure. The bronze construction resists dezincification and handles thermal cycling in hot water loops.

Threaded Joint Limits in High-Vibration Lines

Tapered pipe threads can loosen under sustained vibration or thermal expansion unless supported. The fitting lacks a flange or union nut for secondary retention. Installers must use appropriate thread sealant and pipe hangers to maintain joint integrity over time.

Highlights

  • No-lead cast bronze protects water quality
  • 4-inch to 2-1/2-inch size adapts pipe diameters
  • Hex design allows secure wrench tightening
  • MNPT and FNPT threads ensure reliable connections
  • California Prop 65 warning discloses chemical risks

Specifications

BrandLEGEND VALVE

Questions about this item

What does the no-lead cast bronze hex bushing with MNPT and FNPT threads cap in practice?

The no-lead cast bronze hex bushing uses MNPT and FNPT threads to reduce pipe size from 4" to 2-1/2" in plumbing systems.

What physical dimensions and thread types are required for the 4" x 2-1/2" hex bushing to fit?

The bushing requires a 4" male NPT thread on one end and a 2-1/2" female NPT thread on the other, with a hex profile for wrench tightening.

How is the no-lead hex bushing installed, and which step is commonly missed?

Apply thread sealant to the MNPT threads, thread into the FNPT fitting, and tighten with a wrench on the hex flats; the step often missed is using a no-lead compatible sealant.

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