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Galvanized steel pipe nipple with threaded ends

Zoro Select

Zoro Select 566-070 1-1/4" MNPT x 7" TBE Galvanized Steel Pipe Nipple Sch 40 bathware

SKU CH-9R5V-TJ5BB

Galvanised steel pipe nipple with 1-1/4" MNPT threads for air, gas or potable water systems up to 145 psi at 72°F

  • ColorTransparent
  • TypePipes, Valves & Fittings
  • Galvanized coating resists corrosion for longer service life
  • Schedule 40 wall handles 145 psi at 72 °F for reliable pressure performance
  • Welded steel construction rated to 600 °F for high-temperature applications
  • 1-1/4 inch NPT threads connect directly to Class 150 fittings
  • Suitable for air, gases and potable water systems

1-1/4" MNPT Galvanized Steel Nipple

This Zoro Select pipe nipple is a Schedule 40 steel fitting with male NPT threads on one end and a plain thread-by-end on the other. It suits plumbers and maintenance crews joining 1-1/4 inch nominal pipe in air, gas or potable-water lines. The galvanized coating protects the Grade A steel from corrosion in typical indoor and outdoor installations.

Pressure and Temperature Limits

The fitting is rated for a maximum operating pressure of 145 psi at 72 degrees Fahrenheit and the same pressure for steam at 650 degrees Fahrenheit. It operates continuously down to minus 20 degrees Fahrenheit and up to 600 degrees Fahrenheit for non-steam service. Class 150 compatibility means it matches standard low-pressure flanges and valves, but it is not rated for gravity-flow systems.

Installation Notes

Thread the MNPT end into a matching female NPT fitting using appropriate pipe sealant; the TBE end accepts a coupling or further threading on site. Welded construction eliminates a leak path at a seam, yet over-tightening can still distort the threads or crack the galvanized layer. The product carries California Proposition 65 warnings for cancer and reproductive-harm chemicals, so wear gloves and avoid creating dust when cutting or re-threading.

Highlights

  • Galvanized coating resists corrosion for longer service life
  • Schedule 40 wall handles 145 psi at 72 °F for reliable pressure performance
  • Welded steel construction rated to 600 °F for high-temperature applications
  • 1-1/4 inch NPT threads connect directly to Class 150 fittings
  • Suitable for air, gases and potable water systems

Specifications

BrandZORO SELECT
ColorTransparent
TypePipes, Valves & Fittings

Questions about this item

Which size and schedule should I pick for a 1-1/4 inch galvanized steel nipple?

The nipple is a single 1-1/4 inch NPS, Schedule 40 piece with a 7 inch TBE length.

What does the 145 psi pressure rating mean when the pipe is installed?

It is rated for 145 psi maximum operating pressure at 72 °F and the same 145 psi for steam at 650 °F.

How does the MNPT thread and Class 150 compatibility limit the fittings I can use?

The male NPT threads mate with Class 150 female fittings, capping the joint at the 145 psi rating.

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