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Galvanized steel pipe nipple with threaded ends

Legend Valve

Legend Valve 356-229E 4" x 5-1/2" Schedule 40 Galvanized Nipple

SKU CH-84MJ-106AC

A Schedule 40 galvanised nipple connects 4-inch pipe sections and carries a Proposition 65 warning

  • Schedule 40 rating ensures standard pressure performance
  • Galvanized coating resists corrosion for longer service life
  • 4-inch by 5-1/2-inch size fits compatible piping systems
  • E-Series nipple design provides reliable threaded connections
  • Proposition 65 warning informs safe handling practices

Legend Valve 356-229E Galvanized Nipple

This new Schedule 40 galvanized nipple measures 4 inches by 5-1/2 inches and carries the Legend Valve 356-229E designation. It is a standard plumbing component used to connect two female-threaded fittings in water or gas distribution systems. The galvanized coating provides corrosion resistance for extended service life in residential and commercial installations. California Proposition 65 warnings apply for cancer and reproductive harm.

Suited for standard Schedule 40 plumbing connections

This nipple fits installers joining two female NPT connections where a 4-inch nominal size and 5-1/2-inch overall length are required. It meets the needs of professionals maintaining or extending existing galvanized pipe networks. It is not suitable for systems requiring different diameters, lengths, wall thicknesses, or non-galvanized materials such as brass, stainless steel, or plastic piping.

Schedule 40 wall thickness defines pressure rating

The Schedule 40 designation determines the wall thickness and resulting pressure rating for this 4-inch galvanized nipple. This single specification governs whether the part meets the pressure requirements of the intended water, air, or gas system. Verify the system design pressure against the Schedule 40 rating for 4-inch pipe before installation.

Highlights

  • Schedule 40 rating ensures standard pressure performance
  • Galvanized coating resists corrosion for longer service life
  • 4-inch by 5-1/2-inch size fits compatible piping systems
  • E-Series nipple design provides reliable threaded connections
  • Proposition 65 warning informs safe handling practices

Specifications

BrandLEGEND VALVE

Questions about this item

How do I install the 4" x 5-1/2" Schedule 40 galvanized nipple and what step causes leaks?

Thread the tapered NPT ends into matching female fittings, apply PTFE tape or pipe dope on the male threads only, then tighten two full turns past hand-tight; the common mistake is skipping the sealant, which leaves a spiral leak path.

What maintenance or replacement will the galvanized nipple need over time?

The zinc coating slowly sacrifices itself to protect the steel; inspect joints annually for white rust or pitting, and plan to replace the nipple once red rust appears or threads show visible wear.

What limit appears first when the nipple sees sustained pressure and temperature cycling?

The Schedule 40 wall thickness sets the pressure ceiling; repeated thermal expansion and contraction will fatigue the threads before the barrel yields, so re-torque joints after the first few heat cycles.

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