Overview
ISO 9624:2019/Amd 1:2021 is an important international standard published by ISO, focusing on thermoplastics piping systems for fluids under pressure. This amendment updates the specifications related to flange adapters and loose backing flanges, particularly their mating dimensions. It provides precise dimensional requirements to ensure compatibility and reliable assembly of pipeline components in pressure systems using thermoplastic materials.
This standard is essential for manufacturers, engineers, and quality professionals involved in the design, production, and installation of thermoplastic piping systems. By adhering to ISO 9624:2019/Amd 1:2021, organizations can ensure safety, interchangeability, and performance of flange connections in fluid transport applications.
Key Topics
- Flange Adapters and Loose Backing Flanges: Specifies updated dimensional requirements for flange adapters and backing flanges used in thermoplastics piping systems under pressure.
- Mating Dimensions: Defines critical measurements such as outside diameters, bolt holes, pitch circle diameters, and screw thread sizes required to match flange components.
- Nominal Outside Diameter Changes: Incorporates dimension adjustments for pipes with nominal outside diameters of 630 mm, replacing DN 700 with DN 600 in key tables.
- PE100 Flange Adapters: Recommends higher outside diameter values (D) for flange adapters made of PE100 material to enhance assembly fitness for purpose.
- Bolt and Thread Standards: Bolts and screw threads adhere to ISO 261 metric screw thread sizes, ensuring global compatibility.
- Tables and Annex Updates: Includes corrected dimensions in key tables and annexes, ensuring clarity and accurate implementation.
Applications
ISO 9624:2019/Amd 1:2021 applies to industries and fields where thermoplastic piping is widely used for transporting fluids under pressure, such as:
- Water supply and distribution networks
- Industrial fluid transport systems
- Chemical processing plants
- Wastewater and sewage systems
- Agricultural irrigation
- Oil and gas sectors using thermoplastic pipelines
The standard ensures that flange adapters and loose backing flanges fit correctly and maintain system integrity, thereby reducing leakage risks and maintenance downtime. The precise mating dimensions facilitate easier assembly, replacements, and interoperability between components from different manufacturers.
Related Standards
Organizations and professionals referencing ISO 9624:2019/Amd 1:2021 should also consider related international standards, including:
- ISO 138: Plastics pipes, fittings, and valves for the transport of fluids - covers general requirements for plastics piping systems.
- ISO 261: ISO general purpose metric screw threads - specifies thread sizes and dimensions referenced in flange bolt specifications.
- EN 1092-1: Flanges and their joints - for flange dimensions and types used in metallic and plastic piping systems.
- ISO 4427 series: Plastics piping systems for water supply - for comprehensive rules on polyethylene (PE) pipes used in potable water.
Adherence to these complementary standards supports comprehensive quality management and ensures global conformity in thermoplastics piping system projects.
By following ISO 9624:2019/Amd 1:2021, industries can achieve precision and safety in flange connections within thermoplastics piping systems, promoting durability and efficiency in fluid transport infrastructure. This amendment aligns with evolving technical requirements, providing updated guidance on mating dimensions critical for reliable pipeline performance.
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