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Galvanised malleable iron reducing coupling 1in to 1/2in NPT Class 150

Value Brand

Value Brand Reducing Coupling Malleable Iron Galvanized 1in NPT 1/2in NPT Class 150

SKU CH-MF3Y-BZDWB

A galvanized malleable iron reducing coupling connecting 1 inch NPT to 1/2 inch NPT threads, rated for Class 150 service

  • Reduces pipe size from 1 in to 1/2 in NPT
  • Malleable iron body handles Class 150 pressure rating
  • Galvanized coating resists corrosion in plumbing systems
  • Female NPT threads on both ends accept 11 1/2 and 14 TPI connections
  • California Proposition 65 warning for chemical exposure risk

Reducing Coupling for Pipe Transitions

This galvanized malleable iron coupling connects a 1-inch NPT female thread to a 1/2-inch NPT female thread. It is rated for Class 150 service and suits plumbing installations that require a step-down in pipe diameter. The fitting is new and intended for standard water, air, or gas distribution systems where threaded connections are specified.

Threaded Joint Performance Under Pressure

The malleable iron body provides mechanical strength for Class 150 pressure ratings in normal operating conditions. Galvanized coating adds corrosion resistance for extended service life in exposed or damp environments. Properly sealed NPT threads with 11-1/2 and 14 threads per inch respectively maintain joint integrity without leaking under typical system pressures.

California Proposition 65 Compliance Notice

This product contains a chemical identified by the State of California as a cause of cancer and birth defects or other reproductive harm. Installers should follow standard safety practices such as wearing gloves and washing hands after handling. The warning applies to the fitting itself and does not alter its mechanical function or installation requirements.

Highlights

  • Reduces pipe size from 1 in to 1/2 in NPT
  • Malleable iron body handles Class 150 pressure rating
  • Galvanized coating resists corrosion in plumbing systems
  • Female NPT threads on both ends accept 11 1/2 and 14 TPI connections
  • California Proposition 65 warning for chemical exposure risk

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 1 in NPT reducing coupling and what step is often missed?

Wrap PTFE tape clockwise on the 11 1/2 threads of the 1 in end and the 14 threads of the 1/2 in end, then tighten both female NPT connections; the step often missed is applying tape in the thread direction to prevent unraveling.

What maintenance will the galvanized malleable iron coupling need over time?

Inspect the galvanized coating annually for white rust or scaling, reapply pipe-thread sealant if seepage appears, and replace the fitting if threads show deformation or the Class 150 pressure seal is compromised.

What limit appears first when the Class 150 coupling runs under sustained pressure?

The 150 psi Class 150 rating is the first limit; sustained pressure at or above this value can cause the malleable iron body or galvanized layer to yield before the NPT threads strip.

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