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Black hexagonal plumbing bushing, six by three inches

Legend Valve

Legend Valve 350-656 6" x 3" Black Hex Bushing Plumbing

SKU CH-B5JB-S8MK2

Connects 6-inch and 3-inch NPT threads with a black hex bushing for plumbing systems

  • Reduces pipe diameter from 6" to 3" for system adaptation
  • Male-to-female NPT threads allow direct connection without extra fittings
  • Hex profile enables secure tightening with standard wrenches
  • Black steel construction resists corrosion in plumbing installations
  • Complies with California Proposition 65 chemical disclosure requirements

6" x 3" Black Hex Bushing

This Legend Valve 350-656 bushing connects a 6-inch female NPT thread to a 3-inch male NPT thread in plumbing systems. It is designed for installers who need to reduce pipe size within RV water or waste lines. The black hex body allows standard wrench engagement during assembly.

Before ordering

Verify that the existing fitting presents a 6-inch female NPT opening and that the connecting pipe or component uses a 3-inch male NPT thread. Confirm the system pressure and temperature ratings match the bushing's intended service class. Ensure the chemical compatibility of the bushing material with the fluids in your specific application.

Build integration

The bushing threads directly into the larger female port and accepts the smaller male pipe or adapter without additional couplings. Its hex profile fits standard plumbing wrenches for secure tightening in confined RV compartments. The reduction frees up space by eliminating the need for a separate reducer and nipple combination.

How it compares

Measured against everything we stock in General Plumbing Parts & Tools, at today’s prices. Recalculated every night.

Price $40.99
Pricier than about 83% of the 135 comparable items (median $19.99).

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

What comes in the box with the Legend Valve 350-656 bushing and do I need to buy thread sealant separately?

The box contains the single 6" x 3" black hex bushing with FNPT and MNPT threads. Thread sealant or tape is not included and must be purchased separately for installation.

How do I choose the correct version of the Legend Valve 350-656 for my plumbing job?

This model is a specific 6" x 3" reducing hex bushing connecting a female NPT inlet to a male NPT outlet. Select it only when your system requires that exact size transition.

What does the 6" x 3" sizing mean when the Legend Valve 350-656 is installed in a real piping system?

It reduces a 6 inch female NPT opening down to a 3 inch male NPT connection, allowing you to join pipes or fittings of those two different nominal diameters.

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