PVDF willed couple of weeks : we got cracks in joints ( made by polyfusion , welding etc ) Polypropylene failed after one week : the some reason . We are testing now CPVS . After 3 months it is still alive . regards At 00:22 21/07/98 -0700, you wrote: >Start throwing money... >Externally, for a bulletproof design, you'll need Teflon, PVDF, titanium or >some FRP composite. >As previously mentioned, you're best off with an in-tank design, where CPVC >will work - providing there are NO glue joints (i.e., threaded or flanged >w/ Ti hardware). Polypropylene might work too, since that's what the >filter material is likely to be. > >J.Felts > > >-----Original Message----- >From: Chris Rucinski [SMTP:[log in to unmask]] >Sent: Monday, July 20, 1998 11:07 AM >To: [log in to unmask] >Subject: [TN] Black Oxide Filtration > >Could anyone help me find a pump and filter >house material and/or brand name that will >withstand black oxide chemistry. What are >other circuit board manufacturers using? I am >most interested if a board manufacturer has >been able to overcome this problem without >throwing lots of money at it. > >Vendors please contact me direct. > >Thanks in advance > >Chris Rucinski >Process Engineer > >################################################################ >TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c >################################################################ >To subscribe/unsubscribe, send a message to [log in to unmask] with following >text in the body: >To subscribe: SUBSCRIBE TechNet <your full name> >To unsubscribe: SIGNOFF TechNet >################################################################ >Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section >for additional information. >For technical support contact Hugo Scaramuzza at [log in to unmask] or >847-509-9700 ext.312 >################################################################ > >################################################################ >TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c >################################################################ >To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: >To subscribe: SUBSCRIBE TechNet <your full name> >To unsubscribe: SIGNOFF TechNet >################################################################ >Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. >For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 >################################################################ > > Edward Szpruch Eltek Ltd - Israel Tel 972 3 9395050 Fax 972 3 9309581 E-mail : [log in to unmask] ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################