Hi Darren Thanks very much! Good info.
Regards Keith >I've been looking into clear plastic suitable for use in SVO systems, >where it may well contact diesel, biodiesel and both waste and fresh >vegetable and animal oils and fats. > >Using clear pipe for spotting and locating air leaking into the fuel >system is a clear (sorry) advantage. There is the potential for any >pipe connection to leak even if hose clamps are used. > >So far I have come across > >Braided PVC being used although it tends to degenerate over time it >should be good for a year or two. Rated to 60 deg C (been used at higher >temps) > >Braided Polyurethane would appear superior www.rswww.com lists it as >having "Good resistance to fuels, gases and solvents" over twice the >cost of PVC rated for higher temps (65 deg C) and pressures > >Polyamid (nylon) fuel pipe is less flexible but is often used by the >automotive industry. Connections at suitable hose barbs do not require >clamps, the hose has to be forced on with considerable force - not by >hand or using heat. - rated to 90 deg C > >Other Nylon - rated to 80 deg - good chemical resistance including >automotive oil and fuel. > >Teflon tube (and other PTFE tube) graph of temp/pressure at >www.rswww.com looks superior to alternatives. Good chemical resistance >- Very expensive >Used in the Greasel triple hose for both coolant and fuel, so well >tested. > > >Darren > > > > -----Original Message----- > > From: Keith Addison [mailto:[EMAIL PROTECTED] > > Sent: 01 November 2003 20:30 > > To: biofuel@yahoogroups.com > > Subject: Re: [biofuel] biodiesel storage > > > > Hi Rodney, Todd > > > > HDPE is High Density PolyEthylene. These might help: > > > > Identifying different kinds of plastic and their properties, American > > Plastics Council: > > http://www.americanplasticscouncil.org/benefits/about_plastics/resin_c > > odes/resin.html > > > > Plastics Identification -- Society of Plastics Engineers, Mid-Michigan > > Section > > http://www.midmichiganspe.org/education/identification.pdf > > > > Chemical compatability -- Chemical Resistance Database, Cole-Parmer: > > To search, select at least one of three criteria to search on, > > Chemical, Material, Compatibility Level. If you wish to search by > > compatability level, you must specify a chemical or material. > > http://www.coleparmer.com/techinfo/ChemComp.asp > > > > I had five 12-litre HDPE containers, handy-sized things with two > > lids, I kept all sorts of stuff in them, washed and unwashed > > biodiesel, methanol, methoxide, WVO. Now I only have four. One broke. > > It just broke - a big slice of it just fell out of the side. Luckily > > it was empty at the time, but for a couple of months before I'd > > emptied it and washed it it was filled with... petro-diesel. That's > > the only problem I've had with HDPE. > > > > >I'm not sure if the polyethylene is hdpe. Is there going to be a > > >difference, the fuel will already be washed. And is PVC pipe > > >suitable ( for unwashed fuel), I would like to use to pipe fuel to > > >my mixer, if not what would be the best material for the price. > > >Thank You > > > > I think we've probably had info on all or most of this before, in > > bits and pieces, but it'd be good if a wise and kind list member'd be > > good enough to compile a roundup of what type of piping's suitable > > for what (including heated liquids). > > > > Best > > > > Keith > > > > > > > > >Appal Energy <[EMAIL PROTECTED]> wrote: > > >Rodney, > > > > > >HDPE is suitable if the fuel is washed. > > > > > >Todd Swearingen > > > > > >----- Original Message ----- > > >From: "Rodney Hadley" <[EMAIL PROTECTED]> > > >To: <biofuel@yahoogroups.com> > > >Sent: Friday, October 31, 2003 3:54 PM > > >Subject: [biofuel] biodiesel storage > > > > > > > > > > Is polyethylene suitable for biodiesel storage? What are some >other > > >plastics that are. ------------------------ Yahoo! Groups Sponsor ---------------------~--> Rent DVDs Online - Over 14,500 titles. No Late Fees & Free Shipping. Try Netflix for FREE! http://us.click.yahoo.com/xlw.sC/XP.FAA/3jkFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/index.php?list=biofuel Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
