Nibco, Inc. 600R 5/8x3/8 trap

Reducing Coupling Wrot Copper

This Nibco 600R reducing coupling joins 5/8 inch and 3/8 inch copper tube using a C x C sweat connection. It is made from wrot copper for plumbing and hydronic heating installations. The fitting meets ASME/ANSI B16.22 standards for dimensional accuracy and material quality. It suits professional installers and DIYers working on water supply or heating lines.

Build Integration

The coupling reduces a 3/4 inch outside diameter tube down to a 1/2 inch outside diameter tube within a single fitting. This eliminates the need for a separate reducer and additional joint when transitioning between pipe sizes. Its sweat ends require standard copper soldering tools and flux for a permanent, leak-free seal. It fits tight spaces where mechanical couplings would be too bulky.

Sustained Load Behaviour

Rated for a maximum pressure of 631 psi at 100 degrees F, the fitting handles continuous system pressure in residential and commercial service. Its temperature range spans -20 degrees to 400 degrees F, maintaining joint integrity through thermal cycling in hot water and heating circuits. The wrot copper construction resists dezincification and stress corrosion under prolonged exposure to treated water. It performs reliably in closed-loop hydronic systems operating at design conditions.