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Black steel pipe with 3/4 inch MNPT threaded ends, 6 feet long

Value Brand

Value Brand 584-720GR 3/4" MNPT x 6 ft TBE Black Pipe Sch 40

SKU CH-45PV-W86JC

Black steel Schedule 40 pipe with 3/4 in MNPT ends for air, gas, oil or steam up to 1,454 psi at 650 °F

  • Black steel construction resists corrosion
  • 1454 psi rating handles high-pressure air, gas, oil and steam
  • 600 °F maximum temperature suits demanding thermal applications
  • Welded Grade B steel meets Class 150 fitting compatibility
  • 3/4 inch nominal size with 13/16 inch inside diameter for standard plumbing fit

3/4" Black Steel Pipe for Air, Gas, Oil and Steam

This 3/4 inch nominal pipe is made from welded Grade B steel with a black finish. It carries air, natural gas, non-potable water, oil and steam in Class 150 systems. The 6 foot length comes with male NPT threads on both ends for direct connection. It is rated for 1454 psi at 650 degrees F.

Thermals and Pressure in Normal Use

The pipe withstands a maximum operating temperature of 600 degrees F and a minimum of -20 degrees F. Steam pressure is rated at 1454 psi at 650 degrees F. The 13/16 inch inside diameter maintains flow without gravity feed. Welded construction handles thermal cycling in fixed installations.

Replaces Standard Sch 40 Nipples in Class 150 Piping

This length upgrades worn or corroded black steel nipples in existing air, gas, oil or steam lines. The jump is worth it when threads are damaged or when a longer 6 foot run eliminates extra couplings. It is not for potable water systems or for applications requiring gravity flow. Buyers needing other diameters or schedule ratings must select a different pipe.

Highlights

  • Black steel construction resists corrosion
  • 1454 psi rating handles high-pressure air, gas, oil and steam
  • 600 °F maximum temperature suits demanding thermal applications
  • Welded Grade B steel meets Class 150 fitting compatibility
  • 3/4 inch nominal size with 13/16 inch inside diameter for standard plumbing fit

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 3/4 in MNPT threaded ends on this 6 ft Schedule 40 pipe?

Thread each male NPT end into Class 150 compatible fittings using pipe sealant rated for 1454 psi at 650 Degrees F; the step often missed is confirming the sealant temperature rating matches the 600 Degrees F maximum operating temperature.

What maintenance or replacement will this black steel pipe need over time?

Inspect the welded seam and black coating regularly for corrosion when carrying air, natural gas, non-potable water, oil or steam; replace the pipe if wall thickness loss reduces pressure capacity below the 1454 psi rating at 650 Degrees F.

What limit appears first during sustained high-temperature steam service?

The maximum steam pressure of 1454 psi at 650 Degrees F is reached before the 600 Degrees F continuous temperature limit, so pressure rating governs design for saturated steam at the upper temperature range.

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