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Black hex bushing fitting with threaded ends

Legend Valve

Legend Valve 350-648 Black Hex Bushing 4 x 2-1/2

SKU CH-JSTC-0CQCE

Connects 4-inch female threads to 2-1/2-inch male threads in black iron piping

  • Connects 4 inch to 2-1/2 inch pipes
  • Hex design allows secure wrench tightening
  • Black steel construction resists corrosion
  • FNPT and MNPT threads ensure compatibility
  • Complies with California Proposition 65 requirements

4" x 2-1/2" Black Hex Bushing

This Legend Valve fitting reduces a 4 inch female NPT opening to a 2-1/2 inch male NPT thread. The hex body allows tightening with a standard wrench during pipe assembly. It is supplied new and intended for plumbing systems that require a step-down connection.

Suited for NPT pipe reduction

Installers joining dissimilar NPT pipe sizes will find the correct thread profile here. The bushing is not designed for compression, flare, push-fit or metric pipe systems. Buyers who need a coupling, union, adapter or a different reduction ratio should select another fitting.

Withstands pressure in continuous service

The black steel construction handles sustained system pressure without deformation when installed to code. Thread engagement remains secure under thermal cycling and vibration typical of permanent plumbing installations. No performance data for short-burst testing is provided.

Highlights

  • Connects 4 inch to 2-1/2 inch pipes
  • Hex design allows secure wrench tightening
  • Black steel construction resists corrosion
  • FNPT and MNPT threads ensure compatibility
  • Complies with California Proposition 65 requirements

Specifications

BrandLEGEND VALVE

Questions about this item

What thread type must the pipe already have to accept the 4 x 2-1/2 black hex bushing?

The bushing connects a 4 inch female NPT opening to a 2-1/2 inch male NPT pipe, so the existing pipe must carry male NPT threads.

Will the 350-648 bushing seal against galvanised or black iron pipe already in place?

Yes, the NPT taper on both the female and male ends is designed to seal on standard iron or steel pipe threads when joint compound or tape is applied.

How can I confirm the 648 bushing is seated correctly after installation?

The hex flats should sit flush against the fitting face with no visible thread gaps, and a pressure test should hold without leaks at the joint.

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