3917.40.00.50/Schedule 40 PVC DWV Stack Adapter 4 Inch/Japan

Schedule 40 PVC DWV Stack Adapter 4 Inch from Japan

A stack adapter fitting in Schedule 40 PVC for vertical DWV pipe connections in multi-floor drainage, non-pressure. Under HTS 3917.40.00.50 as other DWV plumbing fittings for building soil stacks. No-hub design for easy alignment.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Certify wall thickness meets Schedule 40 for DWV to distinguish from thinner sewer specs

• Use detailed photos in entry docs showing no pressure markings