Just finished a general overhaul of the processor, for the first time, after three years. That's this processor:
http://journeytoforever.org/biodiesel_processor10.html Journey to Forever 90-litre processor There wasn't anything wrong with it, but the hoses needed replacing, so did the silicon seal under the lid. I replaced all the hose. I'm quite impressed it lasted that long. This is transparent braded PVC hose. It was still strong, no bursts like some people's hoses have burst, and it's not stiff and brittle either, which happens to some plastic with biodiesel. But it was weeping. It's a yellowish colour now, the original and the replacement hose has a faint blue tinge. You can see the difference in the two-year-old photograph at the web page, after about a year I changed the plumbing arrangement for the bottom drains and replaced two bits of hose, they're slightly more blue. What kind of hose won't weep either? The processor has been in regular use every week or so and sometimes much more often than that, for three years, using every process and all the chemicals, but mostly acid-base with sulphuric acid and KOH. These are 90-litre fuel tanks from kerosene water heaters, made of plain steel, with no inner coating. There's no rust anywhere, not even in the two washing tanks. This is the second time I've replaced the silicon seal. I also used two-part polyester putty in some places (not quick-drying, it takes 24 hours), and that seems as good as new. So much for all those horrendous chemicals that eat everything. Best Keith _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
