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Three-inch bronze coupling with threaded ends, no-lead finish

Legend Valve

Legend Valve 310-090NL 3-inch bronze coupling no lead

SKU CH-NDXS-87CVP

A 3-inch threaded bronze coupling with no-lead construction for potable water lines

  • No-lead bronze protects drinking water safety
  • 3-inch FNPT threads fit standard pipe sizes
  • Cast bronze construction resists corrosion long-term
  • California Prop 65 warning discloses chemical risks
  • New condition ensures full factory specifications intact

3-inch no-lead bronze coupling

The Legend Valve 310-090NL is a 3-inch threaded coupling made from no-lead cast bronze. It connects two female NPT threads in potable water or hydronic systems. The fitting meets no-lead requirements for safer drinking water installations.

Pressure rating and thread seal

The coupling carries a 90 pressure-class rating for typical residential and light commercial service. Bronze construction resists corrosion and handles normal temperature swings without cracking. Thread engagement creates a reliable seal when assembled with appropriate pipe compound or tape.

California Proposition 65 notice

This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. The warning applies to the bronze alloy itself and does not change the fitting's function. Installers should follow standard safety practices when handling and joining the coupling.

Highlights

  • No-lead bronze protects drinking water safety
  • 3-inch FNPT threads fit standard pipe sizes
  • Cast bronze construction resists corrosion long-term
  • California Prop 65 warning discloses chemical risks
  • New condition ensures full factory specifications intact

Specifications

BrandLEGEND VALVE

Questions about this item

How do I install the 3-inch FNPT bronze coupling without cross-threading the threads?

Start both ends by hand, turning each side several full rotations until the threads engage smoothly, then tighten with a pipe wrench on the coupling flats only — never force the first turn with a wrench or the bronze threads can gall.

What maintenance or replacement will the no-lead bronze coupling need over time?

Inspect the joint annually for green patina or weeping; if corrosion appears, disassemble, clean the threads with a brass brush, reapply PTFE tape and reassemble — the coupling itself does not wear out unless mechanically damaged.

What is the first limit that appears under sustained pressure and temperature cycling?

The cast bronze body and FNPT threads will leak at the joint seal before the metal yields; watch for seepage at the thread interface during prolonged thermal expansion cycles.

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