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Black steel pipe nipple, threaded both ends, 4.5 inches long

Value Brand

Value Brand 1-1/2" x 4-1/2" Black Pipe Nipple Sch 40

SKU CH-WTHQ-4W5ZR

Schedule 40 black steel nipple threaded both ends for 300 psi water or 150 psi steam service

  • Schedule 40 wall rated for 300 psi at 150 °F
  • Electric-resistance welded seam meets ASTM A-53 Type E and A-733 Grade B
  • Threaded MNPT both ends for direct black-steel pipe connections
  • 5 in overall length fits standard 1-1/2 in nominal pipe runs
  • Black steel construction handles 150 psi steam service per WWN 351

1-1/2" Schedule 40 Black Steel Nipple

This 1-1/2 inch nominal Schedule 40 black steel nipple measures 4.5 inches overall with male NPT threads on both ends. It meets ASTM A-53 Type E and ASTM A-733 Grade B standards for welded pipe fittings. The electric resistance weld construction suits general plumbing, hydraulic and compressed air installations.

Pressure Rating 300 PSI at 150°F

The fitting handles up to 300 psi at 150 degrees Fahrenheit and 150 psi saturated steam pressure. Its 9/64 inch wall thickness and 1 57/64 inch outside diameter provide standard Schedule 40 strength for water, oil, gas and steam lines. It is not rated for pressures above these limits or for critical high-temperature steam service beyond the stated WSP.

Black Steel Construction and Threaded Ends

The black steel finish offers basic corrosion resistance in dry or oil-lubricated environments but will rust if exposed to moisture without coating. Threaded MNPT ends allow direct assembly into female NPT ports without welding. No gaskets, seals or lubricants are included with the nipple.

Highlights

  • Schedule 40 wall rated for 300 psi at 150 °F
  • Electric-resistance welded seam meets ASTM A-53 Type E and A-733 Grade B
  • Threaded MNPT both ends for direct black-steel pipe connections
  • 5 in overall length fits standard 1-1/2 in nominal pipe runs
  • Black steel construction handles 150 psi steam service per WWN 351

Specifications

BrandZoro Select

Questions about this item

Will the 1-1/2" MNPT threads on this Sch 40 nipple match the existing galvanized fittings I already have installed?

Yes, the male NPT threads on both ends follow the same taper standard used on galvanized and black-iron fittings, so they will engage correctly.

How can I verify the nipple is holding pressure after I thread it into my 300 psi air system?

Pressurise the line to working pressure and brush soapy water on each joint; no bubbles forming at the threads confirms a proper seal.

Does the package include thread sealant or do I need to buy pipe dope separately?

The nipple ships as a bare black-steel fitting; you must supply your own PTFE tape or pipe compound for the MNPT connections.

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