We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Galvanized hex bushing fitting with threaded ends

Legend Valve

Legend Valve 352-648 4 x 2-1/2 Galvanized Hex Bushing

SKU CH-ABER-PHM7J

Galvanized hex bushing with female and male NPT threads for plumbing connections

  • Galvanized coating resists corrosion for longer service life
  • Hex design allows secure tightening with standard wrenches
  • Reduces 4 inch pipe to 2-1/2 inch for system compatibility
  • FNPT to MNPT threads connect male and female fittings directly
  • Prop 65 listed for California chemical disclosure compliance

What the fitting connects

The Legend Valve 352-648 is a galvanized hex bushing that joins a 4 inch female NPT thread to a 2-1/2 inch male NPT thread. It suits plumbers and maintenance crews who need a straight reduction in steel piping systems. The hex profile allows standard wrench engagement for quick assembly. Buyers who require a different thread combination or a non-galvanised finish should choose another fitting.

Behaviour under continuous service

Galvanised steel resists corrosion in water and air lines, so the bushing maintains seal integrity over long periods without frequent re-taping. The tapered NPT threads create a mechanical seal that holds under normal system pressures and vibration. Installers who need a fitting rated for extreme temperature cycling or aggressive chemical exposure will need a different material specification.

Deciding specification

The thread reduction from 4 inch FNPT to 2-1/2 inch MNPT is the single detail that determines whether this bushing matches the piping layout. Verify both thread sizes and genders against the system drawing before ordering. A mismatch in either diameter or thread direction means the part cannot be used.

Highlights

  • Galvanized coating resists corrosion for longer service life
  • Hex design allows secure tightening with standard wrenches
  • Reduces 4 inch pipe to 2-1/2 inch for system compatibility
  • FNPT to MNPT threads connect male and female fittings directly
  • Prop 65 listed for California chemical disclosure compliance

Specifications

BrandLEGEND VALVE

Questions about this item

How does the 352-648 hex bushing handle thermal expansion when hot water runs through it all day?

The galvanized steel construction resists corrosion and maintains thread integrity under normal hot-water temperatures in residential plumbing.

What pipe threads must my existing system have to accept this 4" x 2-1/2" bushing?

Your piping needs a 4-inch female NPT opening and a 2-1/2-inch male NPT connection for the bushing to thread in directly.

Will the 648 model bushing join older galvanized pipe without leaks?

Yes, the tapered NPT threads on both ends are designed to seal against matching galvanized or black-iron pipe of the same nominal sizes.

More in Fittings & Couplings

Similar items

Same shelf, same checkout — eight coins and a 30-minute rate lock.