Historical
NSF 358-3-2016
Cross-linked polyethylene (PEX) pipe and fittings for water-based ground-source (geothermal) heat pump systems
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 cross-linked polyethylene (PEX) pipes and fittings used in water-based ground-source heat pump systems. This standard does not cover refrigerant based ground loop heat exchangers such as direct expansion (DX) systems. This Standard does not cover hydronic heating or cooling systems within buildings.
Content Provider
NSF International [nsf]
