ISO 9803-2:2020 pdf download

10-14-2020 comment

ISO 9803-2:2020 pdf free download.Vacuum technology — Mounting dimensions of pipeline fittings — Part 2: Knife-edge flange type.
ISO 9803-2:2020 specifies mounting dimensions for vacuum pipeline fittings (elbows, tees and crosses) of knife-edge flanges for nominal bores from 16 mm to 200 mm.
ISO 9803: 1993 defined only those pipeline fittings whose flanges are non knife-edge type, as defined in 1609: 1986 and IS0 2861-1: 1974. The previous revision divided IS0 9803 into two parts:
—IS0 9803-1, in which fittings with non knife-edge flanges are defined, and
—this part of ISO 9803, in which fittings with knife-edge flanges as specified in IS0 3669 are defined.
This document deals with dimensions of pipeline fittings whose flanges are of knife-edge type, as defined in ISO 3669.
This document was prepared by Technical Committee ISO/TC 112, Vacuum technology This second edition cancels and replaces the first edition (IS0 9803-1:2007),of which it constitutes a minor revision. The changes compared to the previous edition are as follows The changes compared to the previous edition are as follows:
—The normative references have been updated.
— References [1] and [2] have been updated.

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