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Transparent copper FNPT adapter, cylindrical with threaded end

Legend Valve

Legend Valve 450-710 3 CXF Adapter bathware

SKU CH-KM45-PCEBF

Connects 3-inch copper pipe to female NPT threads with a transparent C x FNPT adapter

  • Size3 in × 3-1/8 × 3
  • Product colorTransparent
  • Product typePipes, Valves & Fittings
  • Copper FNPT adapter fits 3" copper pipe
  • Female NPT threads connect to standard fittings
  • Transparent body allows visual flow inspection
  • New condition ensures clean, unused surfaces
  • Prop 65 listed chemical disclosure included

3-inch Copper FNPT Adapter

This Legend Valve 450-710 adapter connects copper pipe to female NPT threads in plumbing installations. The transparent 3-inch fitting suits residential and light commercial water systems. It is supplied new and ships directly from the manufacturer.

Check pipe size and thread compatibility

Verify that your existing copper line matches the 3-inch inside diameter and that the mating component uses FNPT threads. Confirm local code requirements for potable water connections before installation. The product carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm.

No bundled accessories included

The adapter ships as a single fitting without sealant, tape or additional hardware. Installers must supply thread sealant or tape appropriate for the application. No software or digital components are associated with this plumbing part.

How it compares

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

Price $126.99
Pricier than about 79% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameLEGEND VALVE
Product colorTransparent
Product typePipes, Valves & Fittings
Size & build
Size3 in × 3-1/8 × 3

Questions about this item

What comes in the box with the Legend Valve 450-710 adapter and is anything else required for installation?

The package contains the single 3 inch copper female NPT adapter. Pipe thread sealant or tape and the mating copper pipe must be purchased separately.

How do I decide which size of this Legend Valve adapter to select for my project?

Choose this model when you need a 3 inch inside diameter copper sweat connection transitioning to a 3-1/8 inch outside diameter female NPT thread.

What does the 3 inch copper sweat by female NPT specification mean once the fitting is installed in a plumbing system?

It joins a 3 inch copper pipe end to a female threaded connection, allowing a threaded component to be screwed directly onto the copper line.

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