ISO 22433-2018 PDF

Full title and description

ISO 22433:2018 — Aerospace series — Pipe coupling 8°30' — Dynamic beam seal end for elbows, tees and crosses — Geometric configuration. This International Standard specifies the geometric dimensions and configuration of the dynamic beam seal end for elbows, tees and crosses used with 8°30' pipe couplings for aerospace fluid systems.

Abstract

ISO 22433:2018 defines the dimensional requirements for the dynamic beam (lip) seal end configuration for elbows, tees and crosses intended for 8°30′ pipe couplings used in aerospace applications, for nominal pressures up to 28 000 kPa. The document provides the geometry necessary to ensure interchangeability and correct sealing behaviour in aerospace fluid systems.

General information

• Status: Published (international standard; confirmed in systematic review 2023).
• Publication date: 14 March 2018.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.080 — Aerospace fluid systems and components.
• Edition / version: Edition 1 (2018‑03).
• Number of pages: 3.

Scope

This standard specifies the geometric configuration and dimensions of the dynamic beam seal end for elbows, tees and crosses for 8°30′ pipe couplings used in aerospace fluid systems, intended for nominal pressure ratings up to 28 000 kPa. It is limited to the seal-end geometry; materials, manufacturing tolerances and installation practices are addressed in other related documents of the aerospace pipe coupling series.

Key topics and requirements

• Defined geometric dimensions for the dynamic beam (seal lip) end on elbows, tees and crosses.
• Application to 8°30′ pipe coupling family used in aerospace fluid systems.
• Design nominal pressure applicability up to 28 000 kPa.
• Interchangeability and sealing interface geometry to ensure compatibility across manufacturers.
• Normative references to other aerospace-series parts and related technical specifications (series family conventions).

Typical use and users

Engineers and designers of aerospace fluid systems, OEMs and suppliers of pipe couplings and fittings, quality and conformity assessors, regulatory and certification bodies, and maintenance/repair organisations use this standard to ensure correct mating geometry and interchangeability of dynamic-beam-seal-ended elbows, tees and crosses in high-pressure aerospace piping systems.

Related standards

ISO 22433:2018 is one part of the ISO aerospace-series documents for 8°30′ pipe couplings. Closely related standards in the series cover other end types and components (for example, thread ends, ferrule/welded ends and metric series technical specifications) and regional/EN equivalents used for the same coupling family.

Keywords

aerospace series; pipe coupling 8°30'; dynamic beam seal; seal end geometry; elbows; tees; crosses; aerospace fluid systems; interchangeability; high pressure (28 000 kPa)

FAQ

Q: What is this standard?

A: ISO 22433:2018 is an International Standard that specifies the geometric configuration of the dynamic beam seal end for elbows, tees and crosses used with 8°30′ pipe couplings in aerospace fluid systems.

Q: What does it cover?

A: It covers the dimensional and geometric definition of the dynamic beam (seal lip) end for elbows, tees and crosses — ensuring mating compatibility and sealing performance for the 8°30′ coupling family at nominal pressures up to 28 000 kPa.

Q: Who typically uses it?

A: Aircraft OEMs, system designers, component manufacturers and suppliers, inspection and certification bodies, and maintenance organisations use this standard to design, specify and verify compatible pipe fittings and seals in aerospace fluid systems.

Q: Is it current or superseded?

A: The 2018 edition (Edition 1) is the published version; the standard was reviewed and its status was confirmed in 2023, so the 2018 edition remains current.

Q: Is it part of a series?

A: Yes — it is part of the aerospace-series documents that define geometry and requirements for 8°30′ pipe couplings and related component end types; other parts of the series cover different end configurations and related technical specifications.

Q: What are the key keywords?

A: Aerospace series, pipe coupling 8°30′, dynamic beam seal end, elbows, tees, crosses, geometric configuration, interchangeability, 28 000 kPa.