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Black anodized steel pipe nipple, 4 inch NPT threads, 5 inch length

Beck C. H.

Beck C. H. 330054008 Pipe Nipple Steel 4 in NPTxNPT 5 in

SKU CH-38SN-KGM5N

A 4-inch NPT steel pipe nipple rated for 300 psi air, gas, oil and non-potable water service

  • ColorTransparent
  • Handles air, gases, oils and non-potable water with 300 psi pressure rating
  • Withstands steam service up to 150 psi at 360 Degrees F
  • Welded steel construction meets Grade B material standard for durability
  • Black anodized finish protects against corrosion in harsh environments
  • Manufactured in the USA ensuring consistent quality control

4-inch NPT Pipe Nipple for Industrial Piping

This steel pipe nipple connects two female NPT fittings in air, gas, non-potable water, or oil lines. The welded Grade B steel construction handles 300 psi at 150 degrees F and 150 psi steam at 360 degrees F. It suits maintenance crews and plant engineers who need a reliable 4-inch nominal bore connection made in the USA.

Replaces Worn or Leaking Threaded Nipples

Swap out a corroded or damaged nipple when threads no longer seal or the wall has thinned from erosion. The jump is worth it when system pressure approaches the 300 psi rating or when steam service demands the 150 psi at 360 degrees F limit. It is not for potable water systems or applications requiring a different nominal diameter.

NPT Threaded Interface Limits

The tapered NPT threads seal by metal-to-metal contact and require proper thread sealant or tape to prevent leaks at the rated pressures. Over-tightening can crack the fitting or distort the threads, reducing the 300 psi capacity. The black anodized finish resists corrosion but does not change the pressure or temperature boundaries of the steel substrate.

Highlights

  • Handles air, gases, oils and non-potable water with 300 psi pressure rating
  • Withstands steam service up to 150 psi at 360 Degrees F
  • Welded steel construction meets Grade B material standard for durability
  • Black anodized finish protects against corrosion in harsh environments
  • Manufactured in the USA ensuring consistent quality control

Specifications

ColorTransparent
BrandBECK

Questions about this item

What thread standard does the 4-inch steel pipe nipple use for connection?

The nipple has NPT threads on both ends for standard tapered pipe connections.

How should the black anodized steel nipple be installed to avoid leaks?

Apply PTFE tape or pipe dope to the male NPT threads and tighten with a pipe wrench; the common mistake is skipping thread sealant.

When should the Grade B steel nipple be inspected or replaced in a 300 psi air or oil system?

Inspect annually for corrosion, thread deformation or coating wear; replace if leaks appear or the black anodized finish is breached.

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