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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.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $0.68
Cheaper than about 99% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZORO 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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