<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31347066</termId><termName>DWV piping</termName><termType>PT</termType><termNote><![CDATA[ Piping, typically PVC or metal, used in the contruction of drainage, waste, and ventitlation systems.  ]]></termNote><termCreatedDate>2026-03-30 20:33:37</termCreatedDate><relation><relationType>UF</relationType><termId>31347067</termId><termName>drainage, waste and vent piping</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31347068</termId><termName>drainage, waste, and vent piping</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31347069</termId><termName>piping, DWV</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31347070</termId><termName>piping, drainage, waste and vent</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31347071</termId><termName>piping, drainage, waste, and vent</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31322040</termId><termName>piping</termName><termType>PT</termType></relation></term>  </Zthes>