Nsfs 347 2021 [TESTED]

The standard applies to mechanical couplings designed for use with thermoplastic pressure piping. Specifically, it addresses:

NSFS 347-2021 establishes the minimum requirements for mechanical couplings used to join thermoplastic pressure piping systems. This includes pipes made from materials such as PVC, CPVC, PE, and PP. The standard is critical for ensuring the safety, reliability, and performance of alternative joining methods to traditional solvent cementing or heat fusion. It covers material requirements, design criteria, performance testing, and marking requirements.

NSF/ANSI 347 (published 2021) is a voluntary sustainability standard and third‑party certification protocol for single‑ply roofing membranes. It sets criteria across material health, product efficiency, manufacturing, supply chain transparency, and end‑of‑life to help roof membrane manufacturers demonstrate reduced environmental and social impacts and support sustainable building rating systems. nsfs 347 2021

To certify a gasket product to NSFS 347 2021, a manufacturer must:

Failure in any one test requires a 6-month waiting period before reapplication. The standard applies to mechanical couplings designed for

The 2021 revision became mandatory for all new certifications on January 1, 2022. For previously certified products under NSF 347 2017, a transition period was allowed until December 31, 2023. As of 2024, any gasket sold or advertised as "NSF 347 certified" without meeting the 2021 edition is non-compliant.

Major municipal water departments (e.g., Los Angeles Department of Water and Power, New York City DEP, Toronto Water) now explicitly require NSFS 347 2021 in their specifications. Contractors using older-certified gaskets face immediate rejection and potential blacklisting. Failure in any one test requires a 6-month

The NSF also places a strong emphasis on addressing global challenges. This includes funding research on climate change, developing sustainable solutions for energy and environmental issues, and creating technologies that can improve health outcomes. In 2021, as in other years, the NSF likely supported numerous projects focused on these and other pressing global issues.

NSFS 347 plays a vital role in the plumbing and construction industry for several reasons: