Fuel Pressure and Hoses

[Mike Rolica]

Sorry, almost burned to death once because of it.... Touchey subject :-)
Mike Rolica
Meridian Magnesium Products
Strathroy, Ont 
Ext. 260


	-----Original Message-----
	From:	Gary Derian [SMTP:gderian at oh.verio.com]
	Sent:	Tuesday, November 23, 1999 3:12 PM
	To:	gmecm at efi332.eng.ohio-state.edu
	Subject:	Re: Fuel Pressure and Hoses

	Gee, Mike, I didn't mean to get you riled up.  I was just commenting
on barb
	fittings.  The bottom line is check the specs and use hoses
properly.

	Gary Derian <gderian at oh.verio.com>


	> Actually you are wrong on that one.  The compression unions I used
are
	> Parker Part num 6 hbi2
	> Rated at 1500psi, at 400d Cel.!  I also used Parker JIC fittings
as they
	are
	> the same as AN but steel or ss.
	> Maybe you should pickup a Parker 4300 series catalog some time and
read
	it.
	>
	> Also the Teflon lines are no good for gasoline as it and diesel
eats them.
	> I have the specs right in front of me as we use this for die
heater oil
	> lines on all or machines. And it says not for use with solvents or
alkalis
	>
	> Oh and you should actually read the engineering data and fine
print
	closely
	> in these catalogs as it notes with ** Push-Lok hose barbs are
designed for
	> use with Parker push-lok hose and do not require clamps.
	> Also they are only good for -10 to 165 d F at 150 psi is equipped
with a
	> push lock.  You were reading what the actual coupling is rated
for.  For
	the
	> push lock hose, the price per foot for petroleum service, fire
resistant
	> 350psi high tem (302d F max) is about 3 times the price of ss
braided.  I
	> know because we carry it in our stock room for use of die water
lines
	> series 836 or 821fr (good only to 221d C)
	> Mike Rolica
	> Meridian Magnesium Products
	> Strathroy, Ont
	> Ext. 260
	>
	>
	> -----Original Message-----
	> From: Gary Derian [SMTP:gderian at oh.verio.com]
	> Sent: Tuesday, November 23, 1999 11:27 AM
	> To: gmecm at efi332.eng.ohio-state.edu
	> Subject: Re: Fuel Pressure and Hoses
	>
	> A hose barb fitting is fine if used correctly.  The clamp is never
	> supposed
	> to go over the barb.  In fact the good barbed fittings
	> (Parker-Hannifin
	> Push-Lok(R)) use no clamps at all.  They are rated for 250 psi
with
	> the
	> correct hose.  Now if your oil is 300 degrees, you need the ss
	> braid/teflon
	> tube stuff.
	>
	> I find the anodized Earls fittings and hose way too expensive.  I
	> use
	> industrial grade parts from the local hydraulic house.  Steel
	> fittings are
	> OK for me.
	>
	> Brass compression fittings are not good for high pressure either.
	> Use
	> special flare or flareless fittings to connect to steel tubing.
	> Best is to
	> braze the proper AN fitting to the tube.  Make sure all metal
pipes
	> are
	> supported to prevent vibration.
	>
	> Gary Derian <gderian at oh.verio.com>