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Transparent copper adapter with female threads, 1-1/4 inch fitting by FIP

Legend Valve

Legend Valve 450-826 1-1/4" FTG x FIP Adapter bathware

SKU CH-WJCG-J35RB

Copper fitting adapter connects 1-1/4" FTG to FIP threads for bathware plumbing

  • Size1-1/4 in × 1-3/8 in
  • Product colorTransparent
  • Product typePipes, Valves & Fittings
  • 1-1/4" copper fitting connects to FNPT threads
  • Transparent body allows quick visual inspection
  • Fitting-by-FNPT design simplifies installation
  • Legend Valve brand ensures reliable plumbing performance
  • California Prop 65 chemical warning included

Copper Fitting Adapter

This 1-1/4 inch copper fitting adapter connects a copper tube to a female NPT threaded pipe. It is designed for residential and commercial plumbing installations where a transition between solder and threaded connections is required. The fitting is manufactured by Legend Valve and ships in new condition.

Plumbing Installers and DIYers

This adapter suits plumbers and DIYers joining copper tubing to threaded components in water supply lines. Buyers needing a different diameter, a sweat-to-sweat coupling, or a press-fit connection should look at other fitting types. The product carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm.

Build Integration

The adapter fits into a copper piping system by soldering the fitting end to 1-1/4 inch tubing while the threaded end accepts a male NPT pipe or valve. No special tools beyond standard soldering equipment are required for the copper side. It frees up the need for a separate coupling and threaded nipple in tight spaces.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 78% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameLEGEND VALVE
Product colorTransparent
Product typePipes, Valves & Fittings
Size & build
Size1-1/4 in × 1-3/8 in

Questions about this item

What copper pipe size does the 450-826 adapter connect to?

The fitting accepts 1-1/4 inch inside-diameter copper pipe on one end.

Can the female NPT threads on this adapter mate with existing brass or steel fittings?

Yes, the FNPT threads are standard pipe threads compatible with matching male NPT brass or steel fittings.

How do I verify the joint is watertight after soldering and threading the adapter?

Pressurise the line and inspect both the soldered copper connection and the threaded joint for any sign of leakage.

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