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Brass plumbing coupling with male and female threaded ends

Legend Valve

Legend Valve 313-239NL 3/4 x 1 T4320 No Lead IPS Coupling

SKU CH-SNCZ-1E1S0

Connects 3/4" PE pipe to 1" male NPT threads using no-lead bronze for potable water safety

  • No-lead bronze meets California Prop 65 requirements
  • 3/4" x 1" IPS-to-MNPT coupling joins PE pipe to threaded fittings
  • T-4320NL model rated for potable water service
  • Legend Valve 313-239NL manufactured for plumbing installations
  • New condition ensures clean threads and undamaged sealing surfaces

Lead-Free Bronze IPS Coupling

This 3/4" x 1" T-4320NL coupling connects polyethylene pipe using IPS dimensions to a male NPT thread. The no-lead bronze body meets potable-water requirements for residential and commercial plumbing installations. It is intended for installers who need a compliant transition fitting for cold-water supply lines. Buyers who require a leaded alloy for non-potable systems or a different thread standard should select another fitting.

Sustained Pressure Performance

The bronze construction resists dezincification and corrosion during continuous exposure to treated municipal water. No-lead alloy maintains structural integrity under normal supply pressures without leaching regulated contaminants. The coupling is not rated for high-temperature hydronic heating loops or steam service. Installers needing elevated temperature ratings must choose a fitting specified for that duty.

Installation Practicalities

Tapered MNPT threads require proper sealant or tape to achieve a leak-free joint on the male end. The PE pipe side uses standard IPS insertion depth with a compatible clamp or crimp ring. Over-tightening the threaded connection can stress the bronze body and cause cracking. Verify pipe outside diameter matches the 3/4" IPS designation before assembly to avoid fitment errors.

Highlights

  • No-lead bronze meets California Prop 65 requirements
  • 3/4" x 1" IPS-to-MNPT coupling joins PE pipe to threaded fittings
  • T-4320NL model rated for potable water service
  • Legend Valve 313-239NL manufactured for plumbing installations
  • New condition ensures clean threads and undamaged sealing surfaces

Specifications

BrandLEGEND VALVE

Questions about this item

How much heat or noise does the 313-239NL coupling generate during continuous water flow?

This brass fitting has no moving parts or electrical components, so it produces no noise, heat or power draw under normal plumbing operation.

What pipe and thread types must I already have to install this 3/4 x 1 T4320 coupling?

You need a 3/4-inch IPS polyethylene pipe for the PE end and a 1-inch male NPT thread for the other end to match the coupling's connections.

Will this no-lead bronze coupling work with older leaded-brass fittings already in my system?

Yes, the 313-239NL meets no-lead standards and threads onto standard NPT fittings, so it can join existing leaded-brass components without compatibility issues.

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