NCCER Installing and Testing DWV Piping (02204) The plumbing trades rely on precise DWV (Drain-Waste-Vent) system installation to keep buildings compliant and functional. NCCER 02204 covers trap seals, vent sizing, and common installation defects that field crews encounter daily. Contractors who pass this exam demonstrate they understand how improper slope or venting creates backups and code violations? critical knowledge that separates apprentices ready for real job sites from those still learning fundamentals.
| Exam Name | NCCER Installing and Testing DWV Piping |
| Exam Code | 02204 |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
