Submitter's message Please note that this new document has just been published. NSF employees will be able to view this document in AESOP; others can use the link below. Thank you for your contributions to this document -- Laura Lamb Document Name : NSF 358-4 - 2018: Polyethylene of Raised Temperature Description NSF 358-4 - 2018:Polyethylene of Raised Temperature (PE-RT) Tubing and Fittings for Water-Based Ground-Source (Geothermal) Heat Pump Systems Download Latest Revision Submitter : Laura Lamb Group : Joint Committee on Plastics and RV plumbing components Folder : Standards Date submitted : 2018-06-13 10:30:23