Legend Valve 450-740 1-1/2" x 2" C x F Adapter bathware

Copper Reducing Adapter for Bathware

This 1-1/2" x 2" copper reducing adapter connects a smaller copper pipe to a larger female NPT fitting in bathware installations. The C x FNPT configuration allows a direct transition between copper tubing and threaded components without additional couplings. It is intended for plumbers and DIY installers working on residential bathroom plumbing systems.

Replaces Mismatched Threaded Connections

The adapter eliminates the need to join separate reducing bushings and couplings when stepping from 1-1/2" copper to a 2" female thread. Using a single fitted piece reduces potential leak points and cuts installation time compared to assembling multiple fittings. The jump is worthwhile when a clean, code-compliant reduction is required at a tub, shower valve or supply stub-out.

Verify Pipe Sizing and Thread Compatibility

Confirm the existing copper line measures 1-1/2" inside diameter and the mating fitting provides a 2" female NPT thread before ordering. The adapter's outside dimensions are 1-5/8" x 2" OD, so ensure adequate clearance in the wall cavity. Note the California Proposition 65 warning regarding chemicals known to cause cancer and reproductive harm.