ISO 3669:2020Withdrawn

Vacuum technology — Dimensions of knife-edge flanges

Technique du vide — Dimensions des brides à guillotine

This edition has been replaced by ISO 3669:2026.

Abstract / scope

This document specifies the dimensions of fixed or rotatable bolted knife-edge flanges used in vacuum systems for pressures ranging from atmospheric to as low as 10⁻¹¹ Pa.

Life cycle

Replaces

ISO 3669:2017WithdrawnVacuum technology — Bakeable flanges — Dimensions of knife-edge flangesInternational Standard · Published 10 Aug 2017 · ISO/TC 112

Replaced by

ISO 3669:2026PublishedVacuum technology — Dimensions of knife-edge flangesInternational Standard · Published 24 Jun 2026 · ISO/TC 112