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A black anodized steel pipe nipple with threaded ends

Beck C. H.

Beck C. H. 4" Steel Pipe Nipple NPTxNPT 31/2

SKU CH-71D2-847T4

Connects 4 in steel piping for air, gases, non-potable water and oils up to 300 psi

  • ColorTransparent
  • Handles air, gases, non-potable water and oils
  • Black anodized finish resists corrosion
  • Made in USA from Grade B steel
  • Welded construction rated for 300 psi at 150 °F
  • Steam service up to 150 psi at 360 °F

4-inch Steel Pipe Nipple

The Beck 4-inch steel pipe nipple is a welded Grade B fitting with NPT threads on both ends. It is built for installers who need a straight, rigid connector between two female-threaded components in industrial piping systems.

Capacity and headroom: 300 psi at 150 °F

Rated for 300 psi at 150 degrees Fahrenheit and 150 psi steam pressure at 360 degrees Fahrenheit, the nipple handles compressed air, gases, non-potable water and oils. The black anodized coating protects the steel surface, while the 4 1/64-inch inside diameter provides full flow for the nominal 4-inch pipe size.

Replaces worn or corroded threaded nipples

This nipple upgrades from damaged or leaking threaded sections in existing steel piping. The jump is worth it when a welded, USA-made Grade B fitting with verified pressure ratings is required to restore system integrity at the 4-inch nominal diameter.

Highlights

  • Handles air, gases, non-potable water and oils
  • Black anodized finish resists corrosion
  • Made in USA from Grade B steel
  • Welded construction rated for 300 psi at 150 °F
  • Steam service up to 150 psi at 360 °F

Specifications

ColorTransparent
BrandBECK

Questions about this item

Will the 4-inch NPT threads on this steel nipple mate with the 300 psi rated black iron fittings I already have?

Yes, the NPT x NPT threads follow the same taper standard used on black iron, so they will engage your existing fittings up to the 300 psi rating at 150 °F.

After threading it in, how can I confirm the joint is holding the 300 psi rating?

Pressurize the system with air or non-potable water to the working pressure and apply leak detection fluid; no bubbles at the threads means the seal meets the 300 psi spec.

Does the box include thread sealant or gaskets, or must I buy them separately?

Only the 4-inch Grade B steel nipple with black anodized finish is supplied; pipe thread sealant or PTFE tape must be purchased separately.

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