Intercon, Huntington, Dissolvo, Aquasol, are few names that come to mind... Here are some links:
These are water soluble:
http://www.users.qwest.net/~apcompany1005/?gclid=CMjUkofFp5MCFQQcHgod1W-d5Ahttp://www.dissolvo.com/welding_instructions.phphttp://www.dissolvo.com/pdf/pamphlet.pdfhttp://www.aquasolcorporation.com/Home/NewsandEvents/AquasolWaterSolublePaperandTapehttp://www.aquasolwelding.com/techtalk/http://www.aquasolwelding.com/products/Here are some articles on purging:
http://www.airproducts.com/NR/rdonlyres/6AC2C3E9-40E1-4E21-8BBC-57CA2F3E27CE/0/stainless_pipe.pdfhttp://www.haynesintl.com/pdf/h2065.pdfhttp://www.thefabricator.com/Consumables/Consumables_Article.cfm?ID=1401http://www.thefabricator.com/TubePipeFabrication/TubePipeFabrication_Products.cfm?ProductsID=263http://files.aws.org/wj/2006/12/wj200612/wj1206-38.pdfhttp://www.sperkoengineering.com/html/Purge.pdfHere's orbimatic's purging accessories:
http://www.orbimatic.com/orbital-welding-accessories/orbital-welding-accessories.htmlThese guys are good:
http://huntingdonfusion.com/HFT/http://www.gowelding.com/met/purging.pdfhttp://esvc000163.wic028u.server-web.com/catalogue/SPW%20Section%201%20Purging.pdfAnother good source:
http://www.intercononline.com/welding/welding.htmhttp://www.intercononline.com/welding/paperman.htmHere are some more companies offering purging dams and some ideas one could use to build their own but then again, liability issues might bear fruit choosing that route especially in critical applications so, a word of caution may or may not be appropriate here:
http://www.rubcons.com/saf/products_safety_purgedams.php3http://www.orbitalwelding.com/Pages/07-Purge.htmhttp://www.pipelinesupply.com/moreinfo.cfm?Product_ID=453105929&CFID=6444772&CFTOKEN=277Here's an interesting article from the NRC:
http://www.nrc.gov/reading-rm/doc-collections/gen-comm/info-notices/1993/in93063.html Another on that's interesting to say the least:
http://www.cns-snc.ca/branches/Bruce/challenges.pdfHere's an article emphasizing the seriousness of the necessary safety factors required in order to avoid accidents such as these types:
http://www.hss.state.ak.us/dph/ipems/occupation_injury/reports/docs/94ak012.htmVery cool oxygen measuring/monitoring equipment used when purging:
http://www.tendringpacific.com/pdfs/products/SGI-3,%20OXI-3,%20ISM-3%20Oxygen%20Indictors.pdfAMI, Mathey Dearman, Orbitalum (Formerly George Fischer), Magnatech, Orbitmatic, Cobra systems of of California, Astro Polysuede or something like it, Swagelock, etc...
Do a google search and you will find what you want. I'm going to hit the rack!!!
Respectfully,
Henry