Drain, waste and vent fittings (DWV) are used in residential and commercial sanitary systems. NIBCO metal fittings are made from the highest quality raw materials. Wrot fittings are made from commercially pure copper mill products per ASTM B75 Alloy C12200 and conform to ANSI/ASME B16.29. Cast fittings are made per ASTM B584 Alloy C84400 and conform to ANSI/ASME B16.23.
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