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1002.3 Prohibited traps.
The following types of traps are prohibited:
1. Traps that depend on moving parts to maintain the seal.
2. Bell, pot, bottle traps and traps with interior partitions.
3. Crown-vented traps.
4. Traps not integral with a fixture and that depend on interior partitions for the seal, except those traps constructed of an approved material that is resistant to corrosion and degradation.
5. "S" traps.
6. Drum traps.
Exception: Traps used as solids interceptors and traps serving chemical waste systems shall not be prohibited.