REFLECTOR: Aeroquip hose

[Scott Derrick]

Keith,

here's a quote from Aeroquip about 701 hose

"Aeroquip Medium Pressure Engine/Fuel/Oil Hose No. 701 is constructed of 
a seamless specially formulated AQP elastomer compound inner tube. Over 
the inner tube is a partial inner braid of stainless steel wire and a 
full coverage outer braid of the same material."

I'm not sure how much rubber is in this hose, but it does have two layers of stainless steel braid, the outer layer a full coverage. The inner liner is not rubber per se.. but some elastomer formulation containing AQP(?).

1,000 PSI and 300 degrees F is the operating limitations, with a very small min radius bend. I realize some hoses with a teflon liner have a higher temp range.. 

Van's and Lancair recommend the 701 hose for fuel and oil..  I don't know what Velocity recommends..

Scott




Keith Hallsten wrote:
> Scott,
>
> I'm not that familiar with the types of hoses you mention, but I believe
> that Aeroquip "Aeroflex 701" is a rubber hose used with aluminum fittings,
> equivalent to "Stratoflex 156".  I used "Stratoflex 124" Teflon hose with a
> SS overbraid, with swaged-on SS fittings.  I had Sacramento Sky Ranch make
> my hoses, then I installed firesleeve over them.  
>
> Sky Ranch has some information on hoses on their web site:
> http://www.sacskyranch.com/aircraft_hose_links.htm
>
> One key difference between "aircraft" Teflon hoses and "automotive" Teflon
> hoses is that aircraft hoses have an electrically conductive liner.  The
> Teflon for the aircraft hoses is formulated with carbon black, which results
> in black inner liners.  That assures that high voltages cannot build up on
> the liner, allowing arcing to melt little holes in the liner.  We create a
> lot of static electricity slipping through the air, resulting in the
> "potential" (pun intended) for high voltages along the hoses.  
>
> Bottom line: make sure the hoses you plan to use have black liners, not
> clear or translucent "natural" Teflon.
>
> Keith
>
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of Scott Derrick
> Sent: Monday, October 30, 2006 4:01 PM
> To: Velocity Aircraft Owners and Builders list
> Subject: REFLECTOR: Aeroquip hose
>
> I was going to use Aeroquip AE701 hose which is the replacement for 
> Aeroquip 601 hose for fuel and oil lines..
>
> I noticed all the racing shops, Summit, Chief's, ect carry an Aeroquip 
> hose called AQP which has identical pressure, temp, ID, OD and lifetime 
> specs as aircraft 701 hose.  Also  the AN flare fittings for this hose 
> are 1/2 to 1/3 the price of AN flares from AS or other aircraft supply 
> houses.
>
> Is this AQP hose just 701 with a different name?   Anybody using it for 
> primary fuel and oil lines?
>
> Scott
>
>
>
>   

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