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Bronze threaded reducing coupling, female NPT both ends

Legend Valve

Legend Valve 310-389NL 2-1/2" x 2" No Lead Reducing Coupling

SKU CH-16HC-935XW

No-lead cast bronze reducing coupling connects 2-1/2" and 2" FNPT threads

  • No-lead bronze protects potable water systems
  • 2-1/2" to 2" FNPT reduces pipe size directly
  • Cast bronze body resists corrosion in harsh environments
  • California Prop 65 listed for chemical transparency
  • Legend Valve 310-389NL ensures reliable threaded connections

Product Identity

The Legend Valve 310-389NL is a 2-1/2" x 2" no-lead reducing coupling made from cast bronze. It connects female NPT threads of different diameters in potable water systems. The fitting meets no-lead requirements for drinking water installations.

Upgrade Context

This coupling replaces older brass fittings that contain lead and no longer meet current safety standards. The change is worth it when codes require certified no-lead components for new work or repairs. It provides a direct transition between the two listed pipe sizes.

Standard Limits

The fitting uses FNPT threads on both ends, so it only joins components with matching taper threads. It cannot connect to press, push-fit or compression systems without separate adapters. California Proposition 65 warnings apply because the product contains listed chemicals.

Highlights

  • No-lead bronze protects potable water systems
  • 2-1/2" to 2" FNPT reduces pipe size directly
  • Cast bronze body resists corrosion in harsh environments
  • California Prop 65 listed for chemical transparency
  • Legend Valve 310-389NL ensures reliable threaded connections

Specifications

BrandLEGEND VALVE

Questions about this item

What thread standard does the 310-389NL reducing coupling use for its FNPT connections?

The coupling uses FNPT threads on both ends, matching standard National Pipe Thread taper dimensions for 2-1/2 inch and 2 inch pipe sizes.

What is the common installation mistake when threading this no-lead bronze coupling onto pipe?

Over-tightening the joint is the frequent error; cast bronze requires only hand-tight plus one to two turns with a wrench to avoid cracking the fitting.

When should the 310-389NL coupling be inspected or replaced in a potable water system?

Inspect annually for green patina, weeping threads, or reduced flow; replace immediately if dezincification or stress-corrosion cracking appears on the bronze body.

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