The NIBCO 4 in. x 3 in. PVC DWV Hub x Hub Reducing Coupling is designed for use with DWV piping systems. The coupling can be used to adapt PVC pipe to standard female pipe threads. PVC DWV is easy to install and is joined by solvent cementing or threading. PVC fittings exhibit high corrosion and chemical resistance and will not rust， scale， pit or corrode.
4 X 3 in. Inside Diameter and 4 1/8 x 3 1/8 in. Outside Diameter
PVC requires a primer (not included) before cementing
Used with DWV piping
Adapts PVC pipe to standard female pipe threads
Hub x hub connection
Solvent welded connections
ASTM D2665
NSF/ANSI standard 14
UL listed 94V-0
NSF U.P. certified
Note: product may vary by store
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