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Bronze coupling, 3/4 by 1 inch, IPS to FIP threads

Legend Valve

Legend Valve 313-189NL 3/4 x 1 T4365NL IPS-COM x FIP coupling

SKU CH-E23Z-K6HZQ

Connects 3/4 inch PE pipe to 1 inch female NPT threads using no-lead bronze

  • No-lead bronze for safer potable water
  • 3/4 in IPS to 1 in FIP connects PE pipe to threaded fittings
  • Legend Valve brand trusted by plumbing professionals
  • Complies with California Proposition 65 chemical disclosure
  • New condition ready for immediate installation

Legend Valve 313-189NL Coupling

This no-lead bronze fitting joins a 3/4 inch IPS pipe to a 1 inch female NPT thread. It is designed for potable water systems where lead-free materials are required by code. Installers use it to transition between different pipe sizes and connection types in residential or commercial plumbing.

Sustained pressure performance

The bronze body resists corrosion and maintains sealing integrity under continuous water pressure in supply lines. It withstands the thermal cycling and pressure fluctuations typical of domestic hot and cold water distribution without degradation. The coupling remains leak-free when installed with appropriate thread sealant and proper tightening.

IPS to FIP transition limits

This coupling bridges iron pipe size polyethylene to female iron pipe threads, so both sides must match those exact standards. It cannot connect to copper tube size, compression, or push-fit systems without additional adapters. California Proposition 65 warnings apply due to chemical content in the bronze alloy.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $36.99
Pricier than about 74% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

Does the 313-189NL coupling generate noise, heat or draw power when installed in a pressurised line?

No — the 313-189NL is a passive bronze fitting with no moving parts, so it produces no noise, no heat and consumes no power during continuous service.

What pipe and thread standards must already be in place for the 3/4 x 1 T4365NL IPS-COM x FIP coupling to seal correctly?

You need 3/4-inch IPS-sized polyethylene pipe for the compression end and a matching 1-inch female NPT thread on the mating component.

Will the no-lead bronze 313-189NL coupling corrode or seize when joined to older brass or copper fittings in the same system?

The no-lead bronze body is compatible with traditional brass and copper; use approved thread sealant on the FIP side and follow the compression-joint procedure for the PE side to avoid galvanic issues.

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