Nsfs 383 !full! Jun 2026

: Ensure water or fluid flows in only one direction.

: Categorized by their source (natural vs. manufactured) and maximum nominal size (e.g., 10mm, 20mm, 40mm). nsfs 383

For decades, manufacturers tested their non-metallic parts under NSF/ANSI 61. However, regulators and public health officials noticed a gap. The extraction testing in NSF/ANSI 61 is rigorous, but the sheer variety of chemical additives in modern elastomers (e.g., vulcanizing agents, plasticizers, antioxidants, colorants) warranted a more focused and updated protocol. : Ensure water or fluid flows in only one direction