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ISO/DIS 3669

Vacuum technology — Dimensions of knife-edge flanges

General information

40.60     Dec 13, 2025

ISO

ISO/TC 112

International Standard

23.160  

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

PREVIOUSLY

PUBLISHED
ISO 3669:2020

NOW

PROJECT
ISO/DIS 3669
40.60 Close of voting
Dec 13, 2025