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Galvanized carbon steel pipe nipple, threaded both ends, 3 ft length

Value Brand

Value Brand 1-1/4" MNPT x 3 ft TBE Carbon Steel Pipe Nipple Sch 40

SKU CH-RQFA-TRB3G

Threaded carbon-steel pipe nipple, Schedule 40, rated to 1145 psi at 650 °F

  • Galvanized carbon steel resists corrosion in water lines
  • Threaded both ends for direct fit to MNPT fittings
  • Schedule 40 wall rated 1145 psi at 650 °F
  • Electric resistance weld meets ASTM A-53 and A-733 standards
  • 38 in bore and 1.66 in OD match nominal 1-1/4 in size

Threaded pipe nipple for plumbing systems

This 1-1/4 inch MNPT nipple threads into matching fittings on both ends. Schedule 40 wall thickness and galvanized carbon steel construction suit water, air and oil lines in residential or light commercial installations. The three-foot length spans typical fixture-to-fixture runs without extra couplings.

Rated pressure and temperature envelope

Maximum working pressure is 1145 psi at 650 degrees Fahrenheit, covering hot-water circulation and compressed-air service. Electric-resistance-welded seam and 0.14 inch wall maintain integrity through thermal cycling. Galvanized coating resists internal corrosion that would otherwise reduce flow over time.

Standards-compliant dimensions for inspection

Inside diameter measures 1.38 inches and outside diameter 1.66 inches, meeting ASTM A-53, ASTM A-733 and WWN 351 requirements. Metal-detectable material simplifies locating buried or concealed runs. No additional sealant, tools or software are supplied; the nipple is ready for immediate thread engagement.

Highlights

  • Galvanized carbon steel resists corrosion in water lines
  • Threaded both ends for direct fit to MNPT fittings
  • Schedule 40 wall rated 1145 psi at 650 °F
  • Electric resistance weld meets ASTM A-53 and A-733 standards
  • 38 in bore and 1.66 in OD match nominal 1-1/4 in size

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 1-1/4" MNPT threaded ends without stripping the threads?

Wrap PTFE tape or apply pipe dope on the male NPT threads, then hand-tighten before using a pipe wrench on the 1.66 in outside diameter flats; avoid over-torquing the Schedule 40 wall to prevent cracking the galvanized coating.

Will the galvanized coating on this carbon steel nipple need replacement or recoating over time?

The hot-dip galvanizing per ASTM A-53 protects the 0.14 in wall; inspect annually for white rust or red rust at threads and cut ends, and replace the nipple if the zinc layer is breached rather than attempting field recoating.

What pressure or temperature limit will this 3 ft nipple reach first under continuous steam service?

The 1145 psi rating at 650 °F per ASTM A-733 and WWN 351 governs; sustained steam pressure above that level or temperature above 650 °F will exceed the Schedule 40 carbon steel design envelope first.

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