I've also noted that Swagelok ball valves state that the standard seat material is 'reinforced TFE', with 'virgin TFE' as an optional material with a lower pressure rating. The questions is: What is that reinforcing material and it that the problem? The only other options are UHMW polyethylene or PEEK. The first should be OK, not sure about the second.
Dan In a message dated 7/9/02 8:28:40 PM, [EMAIL PROTECTED] writes: << My guess would be that the usual valve hardware is Teflon FEP, and what you want for long-term peroxide compatibility is Teflon PTFE. >> _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
