OTS, McMaster-Carr, page 252 in the on-line catalog. I now recall that the PVDF pumps were the ideal, but we cheaped out and used the Polypropylene w/Teflon diaphragm unit; probably 4157K89 in the current catalog. They worked great, never a problem. However, don't let the HTP sit in a Polypropylene pump; flush with distilled water and air after use with HTP, and always leave a filtered air vent open on the outlet. Any decomposing residual HTP could overpressure it if stored with closed valves. The PVDF w/teflon unit is more compatible if you have the budget. Ken
----- Original Message ----- From: Alex Fraser To: [EMAIL PROTECTED] Sent: Saturday, June 22, 2002 7:14 AM Subject: Re: [ERPS] A Rocket A Day OTS or scratch built? Ken Doyle wrote: John, I mounted air-powered diaphragm pumps on each trailer, above the tank top level and plumbed for full drainage and purge capability. The pumps were made from PVDF, as I recall. -- >>>>>>>>>>>>>>>>----<<<<<<<<<<<<<<<<< ........ Alex Fraser N3DER ......... ......... [EMAIL PROTECTED] ....... [~]_>^</\-[~]_>^</\-[~]_>^</\-[~]_>^< _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
