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Transparent copper adapter with threaded male end

Legend Valve

Legend Valve 450-758 2" C x M Adapter bathware

SKU CH-P555-28A8N

A 2-inch copper male NPT adapter for connecting pipe to fittings in bathware installations

  • Size2 in × 2-1/8 in
  • Product colorTransparent
  • Product typePipes, Valves & Fittings
  • Copper construction resists corrosion for long-lasting plumbing connections
  • Male NPT threads create secure, leak-free joints with standard fittings
  • 2-inch sizing fits common residential and commercial pipe diameters
  • Transparent finish allows quick visual inspection of flow and seal integrity
  • New condition ensures full manufacturer specifications and clean installation surfaces

2-Inch Copper MNPT Adapter

The Legend Valve 450-758 is a copper adapter designed to join a 2-inch copper pipe to a male NPT thread. Its C x MNPT configuration suits plumbing repairs and new installations in residential or light commercial bathware systems. The transparent finish allows quick visual confirmation of joint integrity during assembly.

2-Inch ID by 2-1/8-Inch OD Sizing

The critical specification is the 2-inch inner diameter paired with a 2-1/8-inch outer diameter, which determines compatibility with standard copper tubing and threaded fittings. Installers must verify these exact dimensions against the pipe and fitting being joined to ensure a watertight seal without forcing the connection.

Suits Copper-to-Thread Transitions

This adapter suits plumbers and DIYers needing a direct copper-to-male-NPT transition in a 2-inch line. It does not serve installations requiring a female-threaded outlet, a different nominal pipe size, or a material other than copper. Buyers needing press-fit, push-fit or flanged connections should look at alternative fitting types.

How it compares

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

Price $21.99
Cheaper than about 69% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameLEGEND VALVE
Product colorTransparent
Product typePipes, Valves & Fittings
Size & build
Size2 in × 2-1/8 in

Questions about this item

What does the 2" C x MNPT size mean when I install it?

The 2" copper sweat end slides over 2" copper tube for soldering, while the male NPT threads accept a 2" female-threaded fitting or valve.

How does the MNPT thread standard limit what I can connect?

MNPT is a tapered pipe thread, so it seals with tape or compound and only mates with matching female NPT fittings.

What clearance do I need for the 2-1/8" outside diameter?

The adapter's 2-1/8" OD requires at least that much space in the wall or joist bay for the solder joint and wrench access.

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