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Black steel close pipe nipple, 1/8 inch MNPT threads both ends, Schedule 40

Value Brand

Value Brand 1/8" MNPT x MNPT Black Close Pipe Nipple Schedule 40

SKU CH-YF5A-DQFGF

Black steel Schedule 40 close nipple with MNPT threads on both ends, rated 300 psi at 150 °F and 150 psi steam per ASTM A53 and A733

  • Black steel construction resists wear
  • Threaded both ends for direct pipe connection
  • Schedule 40 wall handles 300 psi at 150 °F
  • ASTM A-53 Grade B and A-733 compliance
  • Electric-resistance weld ensures joint integrity

1/8" MNPT Schedule 40 Black Steel Nipple

This close-threaded pipe nipple is built for plumbing installations that require a short, rigid connection between two female-threaded ports. It suits maintenance crews, facility engineers and contractors who need a standard Schedule 40 fitting for water, oil or air lines.

Pressure rating and sustained service

The nipple is rated for 300 psi at 150 degrees F and 150 psi steam pressure, so it maintains integrity under continuous operating pressure rather than only brief test spikes. Electric resistance weld construction to ASTM A-53 Type E Grade B and ASTM A-733 ensures consistent wall thickness during long-term service.

Thermal and material behaviour

Black steel construction handles the stated temperature range without degradation, and the 1/16 inch wall thickness resists deformation under normal system pressures. Threaded MNPT ends on both sides allow direct assembly without adapters, reducing potential leak paths in the joint.

Highlights

  • Black steel construction resists wear
  • Threaded both ends for direct pipe connection
  • Schedule 40 wall handles 300 psi at 150 °F
  • ASTM A-53 Grade B and A-733 compliance
  • Electric-resistance weld ensures joint integrity

Specifications

BrandZORO SELECT

Questions about this item

How much heat and pressure can this 1/8" MNPT nipple handle during continuous steam service?

The nipple is rated for 150 psi steam working pressure and 300 psi at 150 °F, so it stays sealed under sustained high-temperature loads.

Which thread sealant or tape must I already have to make the MNPT joints leak-free?

Standard PTFE tape or pipe dope rated for 300 psi at 150 °F is required on the 1/8" MNPT threads to achieve a reliable seal.

Will the 25/64" outside diameter and ASTM A-53 Grade B steel mate cleanly with existing WWN 351 threaded components?

Yes, the nipple meets ASTM A-53 Type E Grade B and WWN 351, so its 25/64" OD and MNPT threads match legacy fittings built to the same standards.

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