[QUOTE=MrNIFty923;340477]Here is a picture of the historical ferrule. ![Click image for larger version.
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Oh, That's Polyflow tubing.... With something like old Parker type compression fittings..... Something like a Poly-Tight fitting? Only with the Poly-Tight Ferrule on backwards.. LOL... Graduate students would do easily that. :-)
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Send some pics to your local Parker Hannifin rep.... Usually the mating fitting in the valve body is threaded 1-8th NPT and unscrews. I have a few ancient systems at work (1970s) that use that stuff..
http://ph.parker.com/us/17054/en/bra...bing-poly-tite
or these:
http://northwesthydraline.com/fittin...me.php?cat=769
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The silver fittings pictured are Swagelok or Swagelok clones...
Steve
Last edited by mixedgas; 10-22-2017 at 12:59.
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When I still could have...