IAPMO IGC 422-2025 Modular Drain Waste and Vent (DWV) and Water Connection Systems

1 Scope
1.1 Scope
This Standard covers modular drain, waste and vent (DWV) and water connection systems (hereafter MDWCS) and specifies requirements for materials, physical characteristics, performance testing, and markings. MDWCS consists of the components shown in Figure 1 of the standard.