NSF ANSI 358-1:2020 pdf download.Polyethylene Pipe and Fittings for W ater-Based Ground-Source”Geothermal” Heat Pump Systems.
The physical and performance requirements in this Standard apply to plastic piping system components as well as nonplastic components of the ground loop heat exchanger including, but not limited to, pipes and fittings used in water-based ground-source heat pump systems. This Standard is intended for ground loop heat exchangers with a maximum temperature and pressure of 140 °F (60 °C) at 100 psi. Water-based ground-source heat pump systems commonly include the use of antifreeze, heat transfer fluids, or other chemical additives. 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.
2 Normative references
The following documents contain provisions that, through reference, constitute provisions of this NSF Standard. At the time this Standard was balloted, the editions listed below were valid. All documents are subject to revision, and parties are encouraged to investigate the possibility of applying the recent editions of the documents indicated below. The most recent published edition of the document shall be used for undated references.
ASTM D2290-1 9, Standard Test Method for Apparent Hoop Tensile Strength of Plastic or Reinforced Plastic Pipe3
ASTM Fl 588-96(2015), Standard Test Method for Constant Tensile Load Joint Test (CTLJT)
ASTM D2683-l 4, Standard Specification for Socket-Type Polyethylene Fittings for Outside DiameterCont rolled Polyethylene Pipe and Tubing
ASTM D2737-l 2a, Standard Specification for Polyethylene (PE) Plastic Tubing
ASTM D2837-l 3e1, Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe
Materials or Pressure Design Basis for Thermoplastic Pipe Products
3.3 critical dimensions: Dimensions of a product (e.g., pipes and fittings) that directly affect the fit and
function, or the capacity of making a sound joint, or both.
3.4 fitting: A piping component used to join, terminate, or provide changes of direction in a piping system.
3.5 ground-source heat pump system: A term used to describe a variety of mechanical systems that use the ground, groundwater, or surface water as a heat source or heat sink. Systems can be further described as ground-coupled, groundwater, and surface water heat pump systems.
3.6 hydrostatic design basis (HDB): One of a series of established stress values specified in ASTM D28373 for a plastic compound, obtained by categorizing the long-term hydrostatic strength determined in accordance with ASTM D2837.
3.7 hydrostatic design stress (HDS): The estimated maximum tensile stress a material is capable of withstanding continuously with a high degree of certainty that failure of the pipe will not occur. This stress is circumferential when internal hydrostatic water pressure is applied.
3.8 joint: The location at which two pieces of pipe or a pipe and a fitting are connected together. Various joint types not defined in this Standard shall be defined by ASTM F412.
3.9 plastic: A material that contains as an essential ingredient one or more organic polymeric substances of large molecular weight, is solid in its finished state, and, at some stage in its manufacture or processing into finished articles, can be shaped by flow.
3.10 plastic pipe: A hollow cylinder of plastic, in which the wall thicknesses are usually small when compared to the diameter, and in which the inside and outside walls are essentially concentric.
3.11 pressure rating: The estimated maximum water pressure at a specified temperature that a pipe is capable of withstanding continuously with a high degree of certainty that failure of the pipe will not occur.
3.12 quality assurance (QA): A formal system for verifying that products conform to specific standards. QA is intended as an audit of quality control testing.
3.13 quality control (QC): The methods used to ensure that a production process yields products in conformance with the appropriate specifications established by the QA program.
3.14 rework material: A material from a manufacturer’s own production that has been reground or pelletized for reuse by that same manufacturer.
3.15 steady-state: An operational condition of the manufacturing process that does not change with time.NSF ANSI 358-1 pdf download.