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Black cast iron reducing coupling four by two and a half inches FNPT threads

Legend Valve

Legend Valve 350-565 4 x 2-1/2 Black Reducing Coupling

SKU CH-G12V-MTPB0

Connects 4-inch and 2-1/2-inch pipes with a black SA reducing coupling

  • Black reducing coupling joins 4-inch and 2-1/2-inch FNPT pipes
  • SA construction resists corrosion in plumbing systems
  • Legend Valve brand backs consistent manufacturing quality
  • New condition ensures clean threads and full service life
  • Prop 65 notice informs safe handling on the job

Black Reducing Coupling for plumbing systems

This Legend Valve 350-565 coupling connects 4-inch and 2-1/2-inch female NPT threads. It is intended for installers joining black steel or iron pipe of different diameters in water, gas or oil lines. The SA designation indicates a standard pattern fitting suitable for general-purpose piping assemblies.

Check thread standard

Verify that both pipe ends use female NPT threads and that the schedule matches the coupling pressure rating. Confirm the chemical warning applies to your jurisdiction and that the fitting material is compatible with the conveyed fluid. Ensure you have the correct thread sealant or tape for NPT connections.

California Proposition 65 warning included

The product carries a Proposition 65 notice for chemicals known to cause cancer and reproductive harm. This labelling does not change installation procedure but must be retained for compliance records. No additional accessories, software or seals are bundled with the coupling.

How it compares

Measured against everything we stock in Garden Hoses & Pipe Tubing, at today’s prices. Recalculated every night.

Price $46.99
Pricier than about 74% of the 973 comparable items (median $21.99).

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

Does the 4 x 2-1/2 black reducing coupling come with thread sealant or do I need to buy it separately?

The box contains only the SA black reducing coupling with FNPT x FNPT threads. Thread sealant or tape is not included and must be purchased separately.

How do I know whether the 350-565 model is the right size for my 4 inch and 2-1/2 inch pipe run?

The 350-565 designation identifies this exact 4 x 2-1/2 black reducing coupling. Match those dimensions to your pipe sizes to confirm fit.

What does the Proposition 65 warning mean for daily use of this coupling in a residential plumbing system?

The warning indicates the coupling contains a chemical listed by California as causing cancer or reproductive harm. Normal installed use limits exposure, but installers should follow standard safety practices.

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