Talk:Vacuum flange

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Trying to find the difference between a KF vacuum fitting and a NW vacuum fitting. They seem to be the same in our shop, but there must be some difference. 137.201.242.130 21:37, 27 August 2007 (UTC)[reply]

• I do not believe there is any difference. The reason there are multiple names might stem from the fact that QF stands for Quick-Flange which might have been a registered trademark. In order to avoid legal troubles other makers of QF flanges may have come up with alternative names like NW and KF. Similar to how non Varian Conflat flanges are simply called CF flanges. 24.186.130.27 (talk) 11:51, 23 May 2011 (UTC)[reply]

Is there any explanation what "NW" does stand for? Nenn Weite (German); nominal diameter, usually referring to vacuum tubing internal diameter? — Preceding unsigned comment added by 5.179.29.113 (talk) 17:12, 12 May 2015 (UTC)[reply]

We should also try to find a picture of the ISO flange. /Jonas 62.119.45.30 16:14, 1 November 2007 (UTC)[reply]

I'd like to expand this article to include the various fittings created by Swagelok (formerly Cajon). This would include VCO O-ring face seal, VCR metal gasket face seal, Swagelok tube fitting, and Ultra-Torr vacuum fitting. One could argue that these are fittings, and not flanges, but Vacuum fitting redirects here, and I don't particularly believe there is enough content to necessitate 2 separate articles. I believe I'll also mention National pipe thread (NPT), since it is one of the commonly seen adapter types (particularly for thermocouple vacuum gauges). Once I've added this content, it may be appropriate to rename this article (possibly something like Vacuum connector), but I'll wait until I've expanded the article to raise this issue. -Verdatum (talk) 23:50, 7 January 2010 (UTC)[reply]

I'm tempted to revert these two edits as an advertisement rather than due content. QCF appears to be a recent product (about 2011), the text is in glowing terms, and it highlights the manufacturer and product name. I don't see any indication of widespread acceptance. Glrx (talk) 17:29, 26 June 2012 (UTC)[reply]

I'm new to Wikipedia editing and didn't want to mess up the article, so I decided to state my comments here.

The section discussing ISO large flange sizes, as currently written, omitted size DN80 (3"). I have found this size in three different manufacturers:

    MKS (http://www.mksinst.com/docs/UR/76.pdf),
    Nor-cal (http://www.norcaluk.com/pdf/iso_flanges.pdf)
    and A&N (http://www.ancorp.com/line.aspx?id=683&catid=32).

Bwolf65 (talk) 00:27, 17 August 2012 (UTC)[reply]

What does it mean that "CF Flanges are sexless?" 79.184.237.194 (talk) 11:27, 14 June 2013 (UTC)[reply]

Same diameter flanges will mate with each other. Compare male and female pipe fittings; male pipe does not mate with another male pipe. Glrx (talk) 22:40, 15 June 2013 (UTC)[reply]

The reference number 2, to http://www.caburn.com/resources/downloads/pdfs/sec1.2.pdf is broken today, with server unreachable. It can be found at http://www.caburn.co.uk/resources/downloads/pdfs/sec1.2.pdf. Have not edited yet, in case it comes back... Latrissium (talk) 10:33, 6 January 2015 (UTC)[reply]