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Galvanized malleable iron reducing coupling 1 inch by 3/4 inch NPT

Value Brand

Value Brand Malleable Iron Reducing Coupling 1" x 3/4" NPT Class 300

SKU CH-E6R5-DN7MM

Malleable iron reducing coupling connects 1 inch NPT to 3/4 inch NPT at Class 300 pressure rating

  • Reduces pipe size from 1" to 3/4" NPT for flexible plumbing layouts
  • Malleable iron construction provides high mechanical strength for demanding installations
  • Galvanized coating resists corrosion in water and air systems
  • Class 300 rating supports elevated pressure applications up to 300
  • NPT threads on both ends ensure compatible, leak-resistant connections

Reducing Coupling for Pipe Connections

This malleable iron reducing coupling joins a 1 in NPT female thread to a 3/4 in NPT female thread. It suits plumbing installations that require a straight transition between different pipe sizes. The galvanized finish provides corrosion resistance for water and gas lines. It is rated for Class 300 service pressure.

Galvanized Iron Handles Standard Pressure

The galvanized malleable iron construction withstands normal operating pressures in residential and commercial piping systems. Threaded NPT connections seal without welding or special tools. No moving parts mean silent operation and no power draw. The fitting meets Class 300 pressure requirements for typical supply lines.

Sustained Load Holds Without Deformation

Under continuous pressure the malleable iron body resists creep and maintains joint integrity. The straight thread engagement distributes stress evenly across the connection. Galvanizing remains intact through thermal cycling in hot water or steam service. The coupling remains leak-free for the life of the piping system.

Highlights

  • Reduces pipe size from 1" to 3/4" NPT for flexible plumbing layouts
  • Malleable iron construction provides high mechanical strength for demanding installations
  • Galvanized coating resists corrosion in water and air systems
  • Class 300 rating supports elevated pressure applications up to 300
  • NPT threads on both ends ensure compatible, leak-resistant connections

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 1" NPT reducing coupling without damaging the 11 threads?

Apply PTFE tape or pipe dope to the male threads, hand-tighten, then use a wrench for one to two additional turns; avoid over-tightening which can crack the malleable iron.

What maintenance or replacement will the galvanized Class 300 coupling need over time?

Inspect periodically for white rust or red corrosion on the galvanized coating; replace the fitting if threads show wear, pitting, or if leaks appear at the joint.

What is the first limit reached under sustained pressure at the 300 class rating?

The pressure-temperature envelope of the Class 300 malleable iron body is the limiting factor; sustained pressure above the rated limit for the operating temperature will cause permanent deformation or failure.

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