NSF ANSI 358-1 pdf free download

NSF ANSI 358-1 pdf free download.Polyethylene Pipe and Fittings for Water-Based Ground-Source “Geothermal” Heat Pump Systems.
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
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
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 (OC): 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.
3.16 thermoplastic: (n) A plastic that can be repeatedly softened by heating and hardened by cooling
through a temperature range characteristic of the plastic, and in the softened state, can be shaped by flow through molding or extrusion. (ad]) Capable of being repeatedly softened by heating and hardened by cooling through a temperature range characteristic of the plastic, and able in the softened state to be shaped by flow into articles by molding or extrusion.
3.17 virgin material: A material in the form of pellets, granules, powder, floc, or liquid that has not been subjected to use or processing other than that required for its initial manufacture.NSF ANSI 358-1 pdf download.