Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (2022)

Article Created : September 2008. &nbsp &nbsp &nbsp Article Updated March 2020
Correct Fuel Hose Selection And Use
Fuel Hose Manufacturer Selection
Fuel Hose Overlapping Standards
Fuel Hose Size (Bore) Selection
Fuel Hose Clip Selection

Buy "Best In Class" SAE J30 R9 Fuel Hose Here

Fuel Composition Changes &amp Fuel Hose Grading

&nbsp

Petrol has changed over the years : Do you remember filling up with BS4040 Leaded Four-Star.? (4* = Approx 98 RON) &nbsp We now have 95 RON (3* equivalent) un-Leaded with there being some 97/98 RON (4* equivalent) 'Super' Petrols.

The majority of modern (year 2015) Petrols are blends of classical oil Industry derived Petrols and Bio-Ethanols. &nbsp In the U.K. up to 5% Of Petrol is Bio-Ethanol - As mandated by environmental Laws. &nbsp This isreferred to as "E5" blend (Typically 95RON).
In the United States the content is up to 10% Bio-Ethanol in places (E10 blend) with Laws now being in place to permit the use of 15% Bio-Ethanol (E15 Blend).
E85 and E100 are available in some places

There are other additives in modern Petrols such as Oxygenators to promote cleaner burning; MTBE (Methyl-Tertiary-Butyl-Ether) being a well known additive in the USA.

Ethanol free Petrol (Zero Ethanol "E0") can still be found in the U.K. if you know where to look for it : These are exclusivly Premium grades of 98/99 RON. &nbsp 100LL "AvGas" is Ethanol free but at risk of discontinuance

The molecular strucutre of Ethanol allows the fuel to burn more completely and therefore give cleaner emissions; So its use in fuel has benefits for air quality. &nbsp NOx, CO, HC and particulates are reduced by up to 30% which is great for reducing SMOG.

Ethanol has a high Octane value (109 RON) but a low Energy value. &nbsp This makes it compatible with classic Petrol but means you have to chuck more fuel in for the same effect. &nbsp You can increase compression ratio (CR) a little to help offset the loss in MPG due to the higer Octane rating of Ethanol. &nbsp The ideal Air/Fuel ratio for old fashioned 4* Petrol is 15:1 whilst with Bio-Ethanol it is 10:1 by weight - So some jetting adjustments may be needed to get the best results if you have Carburettors. &nbsp Modern computer controlled Fuel Injection Systems will automatically adjust based on their own sensor readings.
Older fuel injection systems such as Bosch K-Jet may require elctronics hardware changes to cater for the use of these new fuels.

Tail-pipe emissions of CO2 decrease due to the lower Carbon-to-Hydrogen ratio of Ethanols

Unfortunately, these Ethanol &amp Oxygenator additions to Petrol are chemically aggressive and have a tendancy to infiltrate and attack the Rubber compounds historically used to make fuel hosing, 'O' rings and accelerator pump diaphragms. &nbsp These rubber components perish, swell and crack under the influence of Ethanol and ultimateley fail in their function.

Weeping fuel lines can cause FIRES.!

Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (3)

There is a lot of anecdotal evidence on Internet Forums and increasing quantities of formal Technical Reports supporting this viewpoint; &nbsp In both Automotive and Light Aviation user groups.

A report rrom QinetiQ (The old Defence Evaluation &amp Research Agency, DERA) has been published highlighting these concerns in relation to Light Aviation where MoGas (ordinary Petrol Station Petrol) is used

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Click here to read the QinetiQ report

In terms of selecting an appropriate fuel hose for our classic cars we need to understand where the competing Standards of commercial fuel hose come from:

  • ISO - International Standards Organision
  • DIN - Deutsches Institut Fur Normung (German Institute For Standaristion)
  • SAE - Society Of Automotive Engineeers
  • Mil-Std - American Military Standards
  • FAR - Federal Aviation Regulations

As an Automotive specific standards body exists then we automatically have to make sure products conform to their standards for sale into the Automotive sector - this cover issues of liability. &nbsp Though we could later cross-reference the other Standards to cross-sell into other fields such as Marine and General Aviation (MoGas Users). &nbsp There is usually a high degree of overlap between Standards from these differing sectors as they do feed off each other somewhat.

The specific SAE Standard for fuel conveying hoses is SAE J30, which can be broken down into its individual sub-regulations as follows; &nbsp The full SAE J30 specification can be downloaded by clicking here

&nbsp Title &nbsp Permitivity &nbsp &nbsp Working Pressure &nbsp Notes
R2 Synthetic Rubber Tube And Cover Hose N/A N/A Oil &amp Ozone Resistant
R3 Braided Reinforced Rubber Hose N/A N/A Petrol, Oil &amp Water Resistant
R5 Wire Reinforced Rubber Hose N/A N/A Oil & Ozone Resistant
R6 Low Pressure Synthetic Rubber Hose 600&nbspg/m²/day 50 PSI Inner Resistant To Petrol, Diesel, Oil Or Vapours
Ozone & Heat Resistant Outer
R7 Low Pressure Synthetic Rubber Hose 550 g/m²/day 50 PSI Inner Resistant To Petrol, Diesel, Oil Or Vapours
Ozone & Heat Resistant Outer
R8 Low Pressure Synthetic Rubber Hose 200 g/m²/day 50 PSI Inner Resistant To Petrol, Diesel, Oil Or Vapours
Ozone & Heat Resistant Outer
R9 Fuel Injection Synthetic Rubber Hose 15 g/m²/day 100 PSI Inner Resistant To Chemical Attack, Swelling, And Permeation By Gasoline, Oxidized ("Sour") Gasoline, Ethanol Extended Gasoline, Diesel Fuel, And Oil Or Lubricants Or Vapours.
Oil, Ozone & Heat Resistant Outer
R10 Low Pressure In-Tank (Submersed) Hose N/A N/A &nbsp
R11 Low Permeation Fuel Fill, Vent, and Vapor Hose 100 g/m²/day N/A Inner Resistant To Petrol, Diesel, Oil Or Vapours
Ozone & Heat Resistant Outer
R12 Low Permeation Fuel Feed &amp Return Hose 100 g/m²/day 145 PSI &nbsp
R13 Diesel / Bio-Disesl Hose N/A N/A Under Development
R14 Low Pressure Hose (Small Engines) 15 g/m²/day 50 PSI Other Characteristics As Per R9 Spec.
Buy "Best In Class" SAE J30 R9 Fuel Hose Here

The general evolution of the hose Standard can be seen; Higher numbers representing the latest generation of Standard. &nbsp Though the gradings are not entirely linear; R12 is not necessarily better than an R10 grade as the two hose standards cover different application zones.
The R6/7/8 Standards represent the drive to cut vapour emissions on carburatted cars in the 1980s &amp 1990s, with the R9 Standard building on this to cater for the introduction of fuel injection and bio-enhanced fuels.

It can be seen that R9 fuel hose that has been DESIGNED to work with modern fuels has less than 3% of the permitivity of 1980s &amp 1990s fuel hose. &nbsp It even out performs the "A1" (ISO 7840) hosing mandated for use in the MARINE environment, where they are hugely stringent about fire-safety.! (See graph below)

The R6 & R12 data-points being from a reputable manufacturers data sheets; This shows that manufacturers try to EXCEED the Standard where possible.

Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (6)

The fuel injection grades of fuel hose (R9 & R12) are backward compatible with low-pressure carburatted cars. &nbsp This and the exceptionally resistance to chemical attack, swelling and permeation of the R9 grade makes this grade ideal for use in the classic car sector.

The high permitivity of older fuel hoses means that as the bio-Ethanol content of Petrol rises that the older grades of fuel hosing will rot/perish/crack/weep at an increasingly quickening rate from the point of installation. This is because the escaping vapours 'wash out' the synthetic rubber compounds that help keep the fuel hose supple - the ensuing brittleness enables cracks to develop in the hose.

Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (7)
Picture of perished hose end courtesy of "coopersim" on the Volkszone forum

The Civil Aviation Authority (CAA) in the United Kingdom has issued a Mandatory Permit Directive (MPD) on Trelleborg "Hydro K" fuel hoses, mandating an elevated level of service checks on this type of fuel hose due to evidence of perishing in the above manner.

Click here to read the CAA MPD

Is it worth putting your (expensive) Camper Van at risk of catching fire for the sake of some fuel hosing..?
The SAE J30 R9 hosing is WELL WORTH the investment for the peace of mind it gives.

Fuel Hose Manufacturer Selection

&nbsp

In recent years concern over quality of R9 fuel hosing has been developing in user circles; There have been suggestions that R7 hose has been re-labelled as R9. &nbsp Our experience with Codan is that fuel hose labelling can be washed so fresh labelling can be applied to custom order as they have done this for us. &nbsp In our case it was removing a leading car manufactures labels and applying a standard "Codan SAE J30 R9" scheme of labelling in its place.
&nbsp Classic car owners also generally seem to be becoming wary of Chinese manufactured goods. &nbsp A quick trip into Google will yield plenty of examples of this concern.

The independantly researched and concluding advice on the V8Register Web-Site is To buy branded fuel hose from recognised manufacturers and AVOID unbranded "generic" hosing. &nbsp The downloadable slideshows on this link are well worth a read through
The same sentiments are expresed on The Hot Rod Web Site where they observe "inferior Chinese hose and fittings have seriously contaminated the supply chain" and where they suggest "buy name brand parts from a reputable manufacturer or distributor"

(Video) How To Choose Fuel Hose - Earl's Plumbing

"Branded" fuel hose will have the makers name printed down its side-wall - in addition to the specification it conforms to and it's inner diameter. &nbsp For example;

Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (8)

This makes perfect sense in-so-far that if you have made a great product then you would be more than willing to brand your name in to it.
Reputable companies such as Gates, Goodrich, Codan, Goodyear etc., all brand their original goods. &nbsp (This company list is not exhaustive)

Your chosen fuel hose supplier, shop or distributor should be able to provide a data sheet or a link to one on-line for your fuel hose, such as this one from Codan of Denmark - or this one from Goodyear
Kit car builders will need this for their SVA/IVA (vehicle approval) Test Inspection.

Buy "Best In Class" SAE J30 R9 Fuel Hose Here

Fuel Hose Overlapping Standards

&nbsp

From 2014 onwards we have been aware of more "bio safe" fuel hoses, in addition to SAE J30 R9, being made available on the open market to classic car owners.

Gates Barricade being one such prominently talked about hose variety; though reputably difficult to find in the U.K and non-existant in the 5.6mm I.D size desired for air cooled Volkswagens.
We have obtained a datasheet from Gates here

Looking at the datasheet we can see it is designed to meet SAE J30 R9 and R14 permitivity of 15gms/m&sup2/day
Gates are reluctant to publish the exact material make up of Barricade hose so its construction may vary to that of competing products. (i.e. the inner liner may or may not be FKM. &nbsp Or PTFE. &nbsp The liner/outer configuration is followed as per normal fuel hose construction.

Interestingly the catalogue entry lists the Gates Barricade hosing as "Marine" but the datasheet does not explicitly state any conformance with ISO7840 Marine Hose Standards. &nbsp The advice we have to give here is to only use hose clearly marked as compliant with ISO7840 if you are fitting the hose to a Marine Craft as Boat Safety Inspectors will be looking for clearly marked Marine compliance.

Cohline DIN 73379 Type 3E (Rev. 11/97) is being supplied by a few companies as "bio safe" hose. &nbsp We have a datasheet from Cohline here.
It is of standard inner/outer construction as per tradition for fuel hoses. &nbsp The inner is FKM and the outer is ECO
Based on this construction we can assume it is to a similar standard as the Codan SAE J30 R9 hose that we currently sell at Volksbolts which also uses the FKM liner material.
The Cohline data sheet also states that the DIN 733979-3E hose is conformant with SAE J30 R9.

What is becomming apparent from our research around the subject is that the SAE J30 R9 and R14 standards are becomming dominant, with competing national and industrial standards becoming subserviant to SAE for setting the de-facto for qualitative expectations.

Fuel Hose Size (Bore) Selection

&nbsp

It is of EQUAL importance to select a fuel hose of the correct inner bore diameter (ID) as it is to select the correct fuel hose grading.

(Video) Pipe Sizes and Pipe Schedule - A Complete Guide For Piping Professional

One of the properties of Rubber materials is its elasticity; The ability to be stretched and to recoil back to its original shape. &nbsp The material essentially behaves like a spring.

This 'elastic' spring force acts with the natural friction generated between the fuel hose and the metal stand-pipes when the rubber fuel hose is stretched over the metal pipes (Inlet banjos on fuel pumps, filters carburettors etc.). &nbsp This generated 'grip' under normal operations will hold the fuel hose in position on the pipes (Similar to the way a rubber tyre grips the road).

This is shown in the picture below - based on the stock VW application of 5.5mm/5.6mm ID fuel hosing onto the 6mm OD metal stand pipes of the fuel delivery system. &nbsp The magic number for the amount a hose should stretch is 10% - confirmed in our conversations with Codan Rubber and represented in the diagrams below :-

Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (11)

And for Dellorto carburettor 8mm hose inlet connections :-
Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (12)

ALL fuel hosing connections SHOULD BE CLIPPED for extra SAFETY.....Please read on into the next section

Buy "Best In Class" SAE J30 R9 Fuel Hose Here

Fuel Hose Clip Selection

&nbsp

An ideal clamp will generate a UNIFORM clamping Force around the fuel hose, with this evenly applied Force helping the fuel hose to form a nice tight seal.

It is important to choose and use hose clamps properly. &nbsp Hose clamps are sized to fit

specific diameters

of fuel hose and should only be used for those fuel hose sizes.

Inappropriatley sized clamps will not perform as specified and will apply Force around the fuel hose

enevenly

.

There is a popular myth of worm and band clamps (Jubilee brand clips) ovalising when tightening and therefore they should not be used on fuel hosing. &nbsp This myth is almost certainly fuelled by people using inappropriately sized clamps; Though it is in part true

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We can support this by comparing the 'Spider' diagrams of clamping Force below : To the left is an IDEAL distribution : To the right is a MEASURED distribution (Worm and band clamp...data courtesy of Norma Group).

Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (15)

As can be seen, tightened clamps provide a slightly ovalised clamping Force by design. &nbsp This applies to all clamps with a single tightening mechanism
The Force is lower on the rear side of the clamp due to frictional loses between the rubber hose and metal clamp as the clamp is tightened.

This effect is not problematic; These clamp styles are used in safety conscious Marine applications throughout the World.
They are manufactured to BS5315, have BSI KITEMARK &amp N.A.T.O. approvals &amp hold Lloyd's Shipping Register approval.

SELECT THE MOST APPROPRIATE DIAMETER OF CLAMP FOR THE HOSE YOU ARE SECURING

Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (16)

Clamps should be Torqued properly to assure a good quality seal - for captive nut and screw (Such as the ABA fuel hose clamps in the picture above) &amp worm and band clamps (Jubilee or JCS Hi-Grip)

  • Size #6, use 25-30 Inch Pounds
  • Sizes #8 through #16, use 30-40 Inch Pounds
  • Sizes #20 and higher, tighten To 40-45 Inch Pounds
Buy "Best In Class" SAE J30 R9 Fuel Hose Here

CHECK The Metal Inlet/Outlet Pipes On The Fuel Pump And Carburettor

&nbsp

With the increasing age and wear &amp tear taking its toll on Air-Cooled VW designs, people are encountering age related issues at an increased rate.

One issue of specific concern is the wear &amp tear on the press fit metal stand pipes on the VW fuel pumps &amp carburettors.

As can be seen in the below photograph : these press fit parts can work loose and pull out of the Aluminium castings.

Fuel Hose Selection, Pipe Grading (Why R9), Connections &amp Clipping (19)
Picture courtesy of Venomous Werks - Classic Volkswagen Specialist

If this happens on a running engine the results could be catastrophic : regardless of whether you have used the correct fuel hose &amp clips.

To check simply give the pipes a 'wriggle' : any looseness should be obvious.

The best repair advice we have Can be summarised as below :

  • Replace the entire fuel pump or carburettor with a new unit.
  • Refit the pipe using a strong Loctite compound.
  • Tap the casting and use a threaded fuel hose fitting of appropriate size.

Other Useful Resources &amp Articles

&nbsp http://groups.google.com/group/rec.autos.makers.vw.aircooled/msg/756a4a442e3c0996?q=tulz&start=10&hl=en&rnum=13
http://www.groups.tr-register.co.uk/wessex/ethanol-update.html
http://www.hotrod.com/techarticles/engine/hrdp_1101_performance_fuel_hoses/viewall.html
http://thelatebay.com/index.php?threads/alternative-fuel-hose-fuel-pipe-research.39647/<
http://thelatebay.com/index.php?threads/r9-fuel-pipe-breaking-up.36508/

FAQs

What is R9 fuel hose? ›

R9 fuel hose has been designed to work with modern fuels and has less than 3% of the permittivity of the 1980s & 1990s fuel hose. It even outperforms the "A1" (ISO 7840) hosing mandated for use in the marine environment, where they are hugely stringent about fire-safety!

What is the difference between R6 and R9 fuel hose? ›

The R6/7/8 Standards represent the drive to cut vapour emissions on carburatted cars in the 1980s & 1990s, with the R9 Standard building on this to cater for the introduction of fuel injection and bio-enhanced fuels.

What is r7 fuel hose? ›

This Fuel Hose has been designed for use with Modern Chemically Aggressive Bio-Ethanol Enriched Petrol Formulations (E5 & E10) As per currently served petrol pump petrol.

What are the 3 hoses on a fuel pump? ›

The inline fuel filter has 3 lines all combined in the area. The supply hose is connected to the fuel filter. The return hose is connected to the top of the fuel tank. The vapor return hose is connected to the charcoal canister.

What is SAE J30 R6? ›

NITRILE Rubber FUEL HOSE

SAE J30 R6 approved Nitril Rubber fuel hose sold by the meter length. this fuel hose is fully compliant with SVA regulation and most types of fuel.

What fuel hose is ethanol resistant? ›

This is a black FKM/NBR rubber fuel hose, specially designed for automotive and engine applications. The hose is suitable for petrol, diesel, ethanol, gasoline, oxidized sour gas, oils and biodiesel.

Is R6 fuel hose ethanol? ›

The outer tube will be oil, ozone and heat resistant.” This very recent 'J30/R6' hose, suitable for unleaded petrol, is not ethanol-tolerant.

What is sae30r6? ›

SAE 30R6 hoses are designed for low-pressure applications like carburetors, filler necks and connections between tanks. In most markets, SAE 30R6 has been replaced by SAE 30R7. SAE 30R7 hoses are designed for fuel.

What does low permeation mean? ›

Related Definitions

Low-permeation fuel line (or supply) hose means a fuel hose that does not exceed a 15.0 grams per square meter per day permeation rate on CE10 fuel at 23º Celsius, as tested per SAE J1527.

How do I know if my gas hose is rated? ›

Quality fuel hose is marked with an SAE number that indicates what type of material it is made from and what the hose is rated for. If you look at a fuel hose you will see the letters “SAE” followed by the number 30 or J30, the letter “R,” and a number.

Why does the fuel pump have 2 hoses? ›

There are only two hoses running from the pump. One is the high pressure line, which sends fuel to the injectors. The other is the return line, which dumps fuel that the injectors don't use back into the tank.

How do you connect fuel lines? ›

Fuel Line Connection - YouTube

What is the best fuel line to use? ›

The best fuel line material depends on your needs. However, the best material for fuel lines is polytetrafluoroethylene or PTFE. PTFE fuel line is made of plastic material specifically known as Teflon. This fuel line material is impervious is resistant to the degenerative fuel effects which could form vapor barriers.

What is SAE J20? ›

SAE J20. November 1, 2001. Coolant System Hoses. This SAE Standard covers reinforced and flexible hoses intended for use in water and ethylene glycol-based engine-coolant system applications.

What is SAE J30R7 specifications? ›

Construction
TubeBlack Chemigum (NBR)
SAE SpecificationsSAE J30R7
Continental Specifications580019
Length1.6´ (clamshell), 2´ (clamshell), 25´ (spool), 50´ (carton), 250´ (reel)
Branding5/16" (7.9mm) 50 psi Fuel/Emission SAE J30R7 Made in U.S.A. by Continental
4 more rows

Is silicone hose fuel resistant? ›

The simple answer is no, standard silicone hoses are porous and therefore not suitable for oil or fuel.

Does ethanol damage fuel lines? ›

E85 contains up to 85% ethanol and the rest is gasoline. It can be harmful to fuel lines, fuel pumps, and other fuel system components that aren't resistant to ethanol. So if you have a 1993 or older vehicle that still has its original fuel system, you may not be able to use E85.

What hose is suitable for petrol? ›

For hoses that need to be run inside the cabin, PTFE hoses are ideal, as fuel fumes will not permeate the hose walls. Nitrile rubber hoses offer an excellent bend radius.

Do you need PTFE for E85? ›

PTFE is much harder to assemble but longevity wise it is not prone to temperature and pressure. This makes it an excellent option for corrosive fuel, as well as power steering lines, turbo oil lines, etc. For these reasons it is also a great option for E85 and Ethanol fuels as well as Methanol.

Is clear vinyl tubing fuel resistant? ›

No - unless specially made for this purpose do not use plain ordinary vinyl tubing for gasoline and other hydrocarbons.

What is SAE 30R14T2? ›

389 Series SUPER-FLEX® FL-7 Barrier Fuel Line Hose CARB / SORE; EPA; SAE J30R7 / 30R14T2. Series 389 is a fuel line/vapor emission hose for refined fuels such as biodiesel (to B20 in dedicated and non-dedicated service), diesel, ethanol and gasoline.

What is the best braided fuel line? ›

PTFE Lined Hose is the best soft hose you can use and generally has a braided stainless or braided nylon exterior. The PTFE liner blocks fuel vapors and slows the degradation process. PTFE Braided Hoses require Special Fittings.

What causes permeation? ›

Permeation occurs when molecules of the permeant are diffused through a membrane or interface. As the permeant is diffused through the interface it moves from a high to a low concentration. The permeant molecules can either be absorbed or desorbed at the interface according to the process of sorption.

What affects gas permeability? ›

Permeability depends on the temperature of the interaction as well as the characteristics of both the polymer and the permeant component. Through the process of sorption, molecules of the permeant can be either absorbed or desorbed at the interface.

What is the difference between diffusion and permeability? ›

Hi; The term permeation describes the overall mass transport of the gas or liquid penetrant through the composite material, while the term diffusion describes the movement of the penetrant molecules within the mass of the material.

Can you use brass fittings on fuel lines? ›

It is common to find brass fittings in the air brake systems, cab controls, fuel systems, engine, transmission, cooling and air tanks on a heavy-duty truck and they meet DOT and SAE requirements. Let's take a deeper look into why brass is an ideal material for this market.

How much pressure can a fuel hose handle? ›

Fuel injection hoses must be able to take air pressure of at least 50PSI. However, an SAE 30R9-rated fuel injection hose would be able to withstand 100 PSI. A PTFE hose with AN6 can take pressure up to 2500 PSI.

Can I use air hose for fuel line? ›

This topic is concerned with fuel and plastic hoses. Although hoses for water spraying, air and chemicals are made out of many different materials, those for fuel gas and kerosene are almost all made out of rubber. Can PVC and other plastic hoses be used for fuels and gas? In short, the answer is no, they cannot.

What is the best fuel line to use? ›

The best fuel line material depends on your needs. However, the best material for fuel lines is polytetrafluoroethylene or PTFE. PTFE fuel line is made of plastic material specifically known as Teflon. This fuel line material is impervious is resistant to the degenerative fuel effects which could form vapor barriers.

Is SAE J30 R6 ethanol proof? ›

This very recent 'J30/R6' hose, suitable for unleaded petrol, is not ethanol-tolerant.

How do I know if my gas hose is rated? ›

Quality fuel hose is marked with an SAE number that indicates what type of material it is made from and what the hose is rated for. If you look at a fuel hose you will see the letters “SAE” followed by the number 30 or J30, the letter “R,” and a number.

Is clear vinyl tubing fuel resistant? ›

No - unless specially made for this purpose do not use plain ordinary vinyl tubing for gasoline and other hydrocarbons.

How much pressure can a fuel hose handle? ›

Fuel injection hoses must be able to take air pressure of at least 50PSI. However, an SAE 30R9-rated fuel injection hose would be able to withstand 100 PSI. A PTFE hose with AN6 can take pressure up to 2500 PSI.

Can I use rubber hose for fuel lines? ›

It's hard to deny that rubber hose is still a popular choice for many homebuilt fuel systems. It is relatively inexpensive and very easy to install. Compared to other options such as rigid aluminum tubing, it has one major shortcoming: It has limited life and cannot be considered a permanent part of the airframe.

Can you use silicone for fuel hose? ›

Can you use silicone hoses for fuel or oil? No, we don't recommend it. For best results, we recommend that you stick with other materials than silicone for any applications that will allow fuel or oil to come into contact with the hose.

What hose is suitable for petrol? ›

For hoses that need to be run inside the cabin, PTFE hoses are ideal, as fuel fumes will not permeate the hose walls. Nitrile rubber hoses offer an excellent bend radius.

Is rubber fuel hose heat resistant? ›

The EZ-FLO® fuel line has a rubber construction and it is designed for use with petroleum-based products in low-pressure transfer applications. The hose is reinforced for increased strength and durability. It is weather, ozone, and heat resistant.

Can you use brass fittings on fuel lines? ›

It is common to find brass fittings in the air brake systems, cab controls, fuel systems, engine, transmission, cooling and air tanks on a heavy-duty truck and they meet DOT and SAE requirements. Let's take a deeper look into why brass is an ideal material for this market.

What kind of hose can I use for diesel fuel? ›

The American Boat & Yacht Council (ABYC) recommends the Type B1 fuel hose for diesel-based applications. The Type A1 hose is the best option for gasoline supply. This hose is less permeable, highly durable, heat resistant and does not collapse under high pressure or vacuum.

How much pressure is in a fuel injection line? ›

In fuel-injected systems, fuel feed line pressures can be as high as 120 psi so it's best to make sure that the lines and connections in your system are up to task. High-pressure rubber fuel injection lines are readily available, but they can also be replaced with steel-braided lines for added strength.

Will gas destroy vinyl? ›

Anytime gasoline or oil is spilled onto a surface, damage can start. Gasoline specifically is a high-percentage solvent, which can damage soft materials like partial wraps or vinyl car wraps. As such, it is recommended to wipe off gasoline spills or oil spills immediately.

Is PVC affected by gasoline? ›

Many people believe that using PVC pipe for diesel fuel transportation and storage will corrode PVC pipe, but that is not true. Even over a long span of time, diesel fuel will not adversely affect PVC.

Is polyurethane tubing fuel resistant? ›

It has exceptional resistance to most gasoline, oils, kerosene, and other petroleum-based chemicals, making PU tubing and hose an ideal choice for fuel lines (although additives in today's gasoline and petroleum products warrant field testing).

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