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Black forged steel pipe coupling with FNPT threads, 3/4 inch size

Value Brand

Value Brand 1MNA4 3/4 in FNPT Black Forged Steel Coupling

SKU CH-EM3C-ZDDGB

Black forged steel coupling with FNPT threads rated to 3000 psi at 72 degrees F

  • Forged steel construction handles 3000 psi at 72°F
  • Female NPT threads meet ANSI B1.20.1 for reliable sealing
  • ASME B16.11 and SA105 compliance ensures industrial-grade quality
  • ASTM A105 material rating confirms high-strength carbon steel
  • Class 3000 schedule suits demanding high-pressure piping systems

3/4 in FNPT Forged Steel Coupling

This 3/4 inch FNPT coupling is made from black forged steel for plumbing and industrial piping systems. It suits installers who need a threaded connection that meets recognised pressure-class standards. Buyers requiring a different pipe size or a socket-weld fitting will need another product.

Class 3000 pressure rating at 72 Degrees F

The fitting is rated to 3000 psi at 72 Degrees F, providing a high-pressure seal for steam, air, oil or water lines. Forged steel construction resists deformation under load and vibration. Systems operating above this pressure or temperature require a higher-class fitting.

ANSI B1.20.1 and ASME B16.11 compliant

Threads conform to ANSI B1.20.1 and the body meets ASME B16.11 with ASTM A105 material certification. The FNPT threads allow direct assembly to male NPT pipe or nipples without adapters. Installers needing a union, a reducing coupling or a different material grade must select a separate fitting.

Highlights

  • Forged steel construction handles 3000 psi at 72°F
  • Female NPT threads meet ANSI B1.20.1 for reliable sealing
  • ASME B16.11 and SA105 compliance ensures industrial-grade quality
  • ASTM A105 material rating confirms high-strength carbon steel
  • Class 3000 schedule suits demanding high-pressure piping systems

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 3/4 in FNPT forged steel coupling without cross-threading the threads?

Clean the male threads, apply PTFE tape or pipe dope, hand-tighten the coupling, then finish with a wrench turning no more than one to two extra turns.

What maintenance will the Class 3000 forged steel coupling need over time?

Inspect the joint periodically for leaks or corrosion; re-apply thread sealant if seepage appears, otherwise no scheduled replacement is required.

At what temperature does the 3000 psi pressure rating of this coupling begin to drop?

The 3000 psi rating is specified at 72 Degrees F; above that temperature the allowable working pressure decreases.

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