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Standard Specification for Lap-Joint Type Flange Adapters for Polyethylene Pressure Pipe in Nominal Pipe Sizes 34 in. to 65 in.
Name übersetzen
NORM herausgegeben am 1.11.2021
Bezeichnung normen: ASTM F2880-21
Ausgabedatum normen: 1.11.2021
SKU: NS-1046523
Zahl der Seiten: 9
Gewicht ca.: 27 g (0.06 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
This specification covers the polyethylene material and dimensions applicable to flange adapters (FAs) used to connect polyethylene pipes to other flanged pipe and components such as valves and flanged fittings. It describes outside diameter controlled polyethylene (PE) pipe FAs which may be manufactured by various methods including injection molding, compression molding, and machining from thick-wall polyethylene pipe.
Keywords:
back-up rings, bolt rings, flanges, flange adapters, flange joints, HDPE flanges, HDPE, lap-joint flanges, plastic flanges, polyethylene, polyethylene flanges, polyethylene pipe flanges, raised face flanges, stub ends, weld neck flanges,, ICS Number Code 23.040.45 (Plastic fittings)
1. Scope | ||||||||||||||||||||||||||||||||||
1.1?This specification covers the polyethylene material and dimensions applicable to flange adapters (FAs) used to connect polyethylene pipes to other flanged pipe and components such as valves and flanged fittings. This standard describes outside diameter controlled polyethylene (PE) pipe flange adapters (FAs) in diameters ranging from 3/4?in. through 65 in. (12 mm through 1600 mm). The flange adapters may be manufactured by various methods including injection molding, compression molding, and machining from billet or thick-wall polyethylene pipe. 1.2?The flange adapter (FA) is the principal component of the lap-joint flanged assembly widely used for several decades in low-pressure to high-pressure polyethylene pipe systems for all types of pressurized flow (gas and liquid) applications. The flange adapters physical shape consists of the pipe-like Neck which is monolithic with its Hub. The Neck is intended to be butt-fused or fusion coupled to the pipe-line; while the Hub face is intended to affect the seal when subjected to the distributed load from the back up ring with its properly torqued bolt-studs and nuts. Note 1:?Polyethylene pipe flange adapters with slip on bolt
rings are intended for use being bolted to each other or to be
bolted to metal flanges having (primarily) Class 150 bolt hole
patterns such as those presented in metal flange standards ASME
B16.5, ASME B16.47 and AWWA C207.
1.3?The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4?The use of gaskets and gasket selection are often an integral component of the flange adapter assembly. See the Plastic Pipe Institute Technical Note TN-38 for more information regarding HDPE flanged joints. 1.5?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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