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Galvanized steel pipe nipple, 4 inch MNPT by 3-1/2 inch TBE, Schedule 40, welded construction, made in USA

Beck C. H.

Beck C. H. 4" MNPT x 3-1/2" TBE Galvanized Steel Pipe Nipple Sch 40

SKU CH-TYAR-AG1MY

Connects 4-inch male NPT threads to a 3-1/2-inch threaded end for air, gas, oil and non-potable water lines at 150 psi

  • 4 in nominal size fits standard piping systems
  • 3-1/2 in overall length suits tight connections
  • Galvanized steel construction resists corrosion in air, gas, oil and non-potable water lines
  • Schedule 40 wall rated for 150 psi at 150 °F
  • Made in USA from Grade B welded steel

4" MNPT x 3-1/2" TBE Galvanized Steel Pipe Nipple

This 4-inch galvanized steel pipe nipple connects air, gas, non-potable water, or oil lines using male NPT threads on one end and a threaded both ends configuration. It is manufactured in the USA to Schedule 40 specifications with a Grade B steel rating. The welded construction supports a maximum operating pressure of 150 psi at 150 degrees Fahrenheit.

Installation and common issues

Thread the MNPT end into a compatible female fitting and tighten the TBE end into the mating component using appropriate pipe sealant or tape. Ensure threads are clean and undamaged before assembly to prevent leaks. Over-tightening can crack the galvanized coating or distort the welded seam, reducing the pressure rating. Misaligned piping places stress on the nipple and should be corrected during installation.

Compatibility checklist

Verify that your system uses 4-inch nominal pipe size with matching NPT threads and Schedule 40 wall thickness. Confirm the operating pressure does not exceed 150 psi at 150 degrees Fahrenheit. Ensure the media is compatible with galvanized steel and that the application is non-potable. Check local codes for any restrictions on galvanized fittings in your specific installation.

Highlights

  • 4 in nominal size fits standard piping systems
  • 3-1/2 in overall length suits tight connections
  • Galvanized steel construction resists corrosion in air, gas, oil and non-potable water lines
  • Schedule 40 wall rated for 150 psi at 150 °F
  • Made in USA from Grade B welded steel

Specifications

BrandBECK

Questions about this item

How do I verify the nipple holds pressure after threading it into a 4 in NPT fitting?

Pressurize the line to the 150 psi rating at 150 °F and check for leaks at the male threads and the weld seam.

What comes with the nipple and what must I supply?

The nipple itself is the only item included; you must provide thread sealant or tape and any mating fittings for the 4 in MNPT and TBE ends.

Which schedule should I select for a 4 in galvanized steel line rated to 150 psi?

Choose the Schedule 40 version listed here; it matches the 150 psi @ 150 °F pressure rating for this nominal size.

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