Submitter's message Please note that a new version of this document has just been published. NSF employees will be able to view it in MasterControl (document #12716); others can use the link below. Thank you for your contributions to this document! -- Amanda Zeoli Document Name : NSF/ANSI 358-2-2022: Polypropylene Pipe and Fittings for Water-based Ground-source Geothermal Heat Pump Systems Description The physical and performance requirements in this standard apply to plastic piping system components as well as non-plastic components of the ground loop heat exchanger including but not limited to pipes and fittings used in water-based ground-source heat pump systems. Download Latest Revision Submitter : Amanda Zeoli Group : Joint Committee on Plastics and RV Plumbing Components Folder : Standards Date submitted : 2022-12-19 08:05:11 Revision : 2