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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>We get 55 gallon drums of propylene as it is ‘food’ grade. Those tanks in the winery that aren’t jacketed ammonia are jacketed glycol. Food grade means ‘incidental’ contact. So when something breaks, and it does, the wine, glycol can all go to the wastewater pond, it’s all garbage anyway, just not a toxic cleanup. I’m thinking last time I purchased, a couple years ago it was like $10 a gallon, wholesale. We’d get 500-1000 gallons depending on how big the break was. 6” PVC for hundreds of feet is a lot of glycol when a fitting breaks and your 25hp pump keeps on chugging away. PVC manufacturers specifically state to not use with glycol at any proportion/temperature. Newer installs are stainless mains, copper branch. Dumped a lot of juice over the years from failed fittings. 6” PVC is a lot cheaper than SS, plus expensive outdoor insulations. But remember it isn’t run at 100% I’m thinking 8-10% dilution. Use a refractometer to test to 20° or whatever the target is. Dow has charts. Comes clear, we add pink dye to find leaks. <o:p></o:p></p><p class=MsoNormal>Bradford<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> AT <at-bounces@lists.antique-tractor.com> <b>On Behalf Of </b>Greg Jeung<br><b>Sent:</b> Thursday, January 10, 2019 4:05 PM<br><b>To:</b> Antique Tractor Email Discussion Group <at@lists.antique-tractor.com><br><b>Subject:</b> Re: [AT] Old tractor antifreeze<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Anyone what is used in radiant floor heating systems and if available in larger quantities? Possible option?<o:p></o:p></p></div><div><p class=MsoNormal>Greg<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>On Jan 10, 2019, at 3:48 PM, Brice Adams <<a href="mailto:brice.adams@gmail.com">brice.adams@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div><p class=MsoNormal>Dave,<o:p></o:p></p></div><div><p class=MsoNormal><span class=gmail-ilfuvd>Propylene glycol is considerably less toxic than ethylene glycol and may be labeled as "<b>non</b>-toxic antifreeze". </span> <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I get Sierra at NAPA.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Brice<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Thu, Jan 10, 2019 at 5:26 PM Dave Merchant <<a href="mailto:kosh@ncweb.com">kosh@ncweb.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal><br>Picking up on the old tractor antifreeze thread, does anybody have <br>recommendations on a safe product to use?<br><br>Bottle labeling is very unhelpful.<br><br>We have Tractor Supply in our area, but haven't had a chance to get <br>there. Wally etc appear to have nothing safe.<br><br>Thanks,<br>Dave Merchant<br><a href="https://www.youtube.com/user/SteamCrane" target="_blank">https://www.youtube.com/user/SteamCrane</a><br><br><br>_______________________________________________<br>AT mailing list<br><a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br><a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><o:p></o:p></p></blockquote></div></div></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>_______________________________________________<br>AT mailing list<br><a href="mailto:AT@lists.antique-tractor.com">AT@lists.antique-tractor.com</a><br><a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><o:p></o:p></p></div></blockquote></div></body></html>