After years of you people asking, I am now able to supply the Hydrogen Flashback Arrestor used in this video 😀 feel free to reach out on my Facebook page: facebook.com/hydrogenguys
Many years ago I ran my old Rover car on gas and made a valve that let gas through on demand, so no gas until suction from the inlet valve and that worked very well I would think a suction valve would be ideal for HHO.
The flashback arrestor up against the intake is a smart move. I would place seals between the plastic washer and the intake to make sure it is air tight and possibly a seal between the arrestor and washer as well.
Hi. Thankyou for the comment. The timing should be retarded to Top dead centre for safe operation, but to get the most out of the fuel I found that timing can be just before top dead centre, but if you go to far then piston slap can occur. Hope this helps
The Nitrogen that you dont have in your engine plays an important part in combustion. It absorbs the heat from the initial combustion of the fuel and oxygen and reduces combustion temperature, then it expands itself in the process of absorbing that heat so you dont lose that much expansion. When you burn just fuel and oxygen, you get out of control levels of heat and burn pistons and valves ect.
If there is a plastic plate as you call it? Also looks like a spacer, it is normally there as a heat sink, so that the carburettor does not get too hot. This is to stop the petrol evaporating from the carburettor before use! Looking at your drawing, it looks like there would not be enough diameter to feed the engine? Mind you, this is probably not to scale. I do like the way you have made it nice and simple to understand. Thanks for your drawing, have a great day.🤪
How do you calculate how much hho gas volume you need based on the specific engine and cylinder size, along with a rough estimation for how long you can run it.
I found an HHO generator model that puts out about 2.5 LPM, I think if I doubled the model 5 LPM would be enough to fuel an engine like this. He runs the engine at 50 PSI in a later video, so I think I would need a generator that produces 4.2 LMP, if I can get an output of 5 it would be perfect. Based on my calculations 4.2 liters/minute at 50 PSI will produce 2.1 LMP per cylinder. Since the flashback arrestor has a diameter of 1/4", so the max flow of gas at 50 PSI is about 2.1 but your gonna need one per cylinder, and lawnmower engines usually have 2. TDLR: 4.2 liters/minute at 50 PSI will produce 2.1 LMP per cylinder. You should shoot for a gas flow of 5 LMP though to be safe.
@@AirGunPoland I beleive so. Those calculations were based off of this particular 2 cylinder lawnmower engine. 6LPM would take a lot of power, so if you're planning on powering the HHO generator with the electricity from the electric generator, while it should work, don't expect to have much extra power in reserve.
When obtaining hydrogen from hydrolysis for energy storage and to run an engine at a later time to generate electricity, would you store is as HHO or Hydrogen?
Have you tried using a small car LPG gas regulator because it worked for me but as you have already noticed that the HHO unit does not produce enough pressure and gas to keep the engine running if we can work that out it would run.
yes LPG carb does work but for pure hydrgen only, we used a LPG carburettor in one of our other videos. using a LPG carb for HHO didnt work so well for us.
Great job, but if you let the engine suck vacuum from hho it's will work better and the production of hho under vacuum more higher than normal, the more vacuum the lower current.
Briggs 18HP Lawn mower engine ran on water in carb 2008. 6-10amp pulses THROUGH SPARK PLUG from on board ring dual alternator with late ATDC timing, Small Hydrogen formed at plug + water vapor pressure same time. S1R9A9M9 discovered this new process. Self sustained as ignition high volts is by Magneto - not battery coil. Triple hand wound coil forms magnetic field over plug wire extending timeing 0-minus 34 degrees. Accessory spark gap required while EGR of embedded nitrogen compoinnds increases efficiency if used. Battery start, then disconnected. See videos 1+2!
Try advanced timing just before tdc for knock correction i believe it could be cause in ur valve issues hydrogen has slight imploding effect just before explosion
What about choke 100% and feed gas into fuel line that should be about the same thing? The other thing i was planning is the HHO bubbles through bottle of gasoline?
@@brettjasonheadinventorso it seems we need a better hho generator 🤔 I wonder if a SLS metal printer made lattice structure would provide adequate surface area. To the best of my understanding efficiency of the generator is what holds this back from mainstream use.
Hi James, Nice video you have helped me a lot. Have you thought about injecting the HHO directly into the combustion chamber and welding the intake valve closed?
Combustion stroke both valve intake and exhaust are normally close,so much better you install one way valve from the hho line,to avoid flash back thats it.
why is it easy to get distracted with Nox emissions. when the advantage of hydrogen is that the IC engine needs to be redesigned , it should not be air breathing , 1. you can remove the inlet valve as HHO mixture already contains proportionate hydrogen and oxygen mixture 2:1 as a provision through fuel injectors or carburetors (whichever is efficient for ignition) 2. with only a exhaust valve meaning less complexity and wear and tear of valves is reduced by half . 3. for lean or rich fuel mixture ratios - the HHO generator using electronically calculated ratios with a minimal buffer storage of oxygen in isolated chambers. (probably modifying fuel injectors to create HHO truly at the last mile or on-demand. ) with fuel injectors based hho production just like inkjet i believe the you get nascent hydrogen and , nascent oxygen.
HHO on a 2 stroke would be very difficult, as any flashbacks from the combustion chamber would into the crankcase igniting the HHO in there too, not impossible though.
I was thinking of such a project. One in which HHO was produced by photovoltaic panels via electrolysis, then the HHO to be used by power generator converted to burn hydrogen like yours. And replacing a battery storage with a HHO balloon. Will that work fine?
Personally I would use pure hydrogen not hho gas. So like you said, you could use solar to make electricity to make pure hydrogen, then store the pure hydrogen safely in a gas tank (you shouldn't store hho gas). Then run the generator on the hydrogen when needed.
Is yours blocked? For that to work, your HHO production has to volumetrically match the cylinder volume, right? Maybe match it as propane air/fuel ratio..
Good point, but the engine will run with a small amount off HHO at a time, but yes you will need to make alot of gas per minute, for example a 200cc Engine will need at least 8 to 10lpm of gas. If you mix it with air from the atmosphere the gas will become less powerful.
You need a 2-stroke engine two separate intakes and a small exhaust One for hydrogen, one for oxygen Pressurized h and o Run Watch HP This needs to be developed
did you realise youre actually running an implosion engine in this setup ? the pre-ignition in these engines is usually hard set on several deg before tdc pure HHO implodes so when the HHO enters the cylinder, it has a "high" volume. when ignited, HHO converts back to water water has 1/1800th the volume of HHO and thus you het a vacuum at several deg before TDC .... its strong enough to make the engine run :)
the problem im discovering with bottling hho is that pressure will just re condense back into water. so what you need is to configure a dry fuel cell to separate its manufacture of hydrogen and oxygen, then you can bottle either separately. I think the highest psi I've heard of before weird stuff starts to happen to the hydrogen is around 2000-2800psi. anything past that and you're entering the realm of liquid hydrogen and that requires liquid nitrogen to keep cool otherwise as it heats back up in the bottle at 3000psi, that pressure will continue to increase and now you have a pipe bomb. So just separate the hho into h2 and oxygen and then you can use valves to remix at the combustion source. make sure you have flashback arrestors, and somethign to dial down the released gas, because hydrogen can self ignite from its own friction generated from leaving the bottle. The dream is to make a system where you can generate your own gas at home (maybe solar powered), and bottle it yourself. This lets us circumnavigate the need for $10k batteries or expensive gasoline. NEVER USE CO2 BOTTLES TO STORE HYDROGREN OR OXYGEN>>> CO2 BOTTLES ARE RECYCLED/AGED BOTTLES ON THEIR LAST LEG OF LIFE> NOT SAFE>
@@protein.planet-uae i would assume that the pressure would cause the h2 and O to recombine into h2o=water.. you have to separate them. plus i've always heard because they do different stuff at different pressures, you can have spontaneous combustion if you pressurize hho. so yeah.. split your hydrogen and oxygen production before bottling or you're gonna have a bad time seems to be the general consensus.. don't go past like 2800psi either.. and don't use recycled co2 bottles.
Three problems to fix , more vavle lash = less overlap , retard timing to before top dead center, or leave timing alone and add co2 too slow the burn .
I bought a kit from Labellahho but they are no help at all. Anyone knows it can recommend me a shop in southern California where I can install the kit. I'm have a 2018 Chevy Silverado
You can’t store large quantities of HHO since it’s way too dangerous , I can’t imagine a scuba tank filled with this stuff at 200 psi going off .. that’s worse than a bomb .
Dude where's your car running..and no you need 13H to 87O. It can vent to atmosphere if hho hose is not by the carb.yip put your hho into by the butterfly as close as possible.also H can escape a 2mm gap and octane cannot. Dude are you sure an erred your model!!!!!!!
You most certainly do want air to enter in on top of the oxygen produced, about 29.3:1 as in twenty nine point three parts atmospheric air at sea level for every one part hydrogen you are producing and or feeding into the engine as the optimal stoichiometric air fuel ratio is thirty four point three to one. Minus the one part oxygen you are producing per two parts hydrogen of course will give you about twenty nine point four to one. (Air fuel ratio accounts for oxygen being 21 percent of the atmosphere already) This ratio will facilitate a complete burn and give you the most efficiency and potential energy possible. You also want to ensure that your apparatus is designed to seperate the oxygen and hydrogen immediately as it is produced to avoid having an explosive mixture of gasses while they can be safely piped separately and recombined at your intake. This will prevent any accidental explosions from happening and ruining your day and or killing you! This also prevents the need for a "flashback arrestor" as well as in the absence of oxygen hydrogen will not combust so you do not need to worry about the a flame traveling up the gas line or hose. The most simple design you can produce to accomplish this is building your apparatus in the shape of a uppercase H with the cross bar below the level of your electrolytic solution. Also your solution should most certainly not be salt water or you will not be producing Hydrogen and Oxygen you will produce Hydrogen at the cathode and chlorine gas at the anode. Your electrolytic solution should be either sodium or potassium hydroxide or in the very least sodium bicarbonate. Chlorine gas is highly toxic and can kill you.
After years of you people asking, I am now able to supply the Hydrogen Flashback Arrestor used in this video 😀
feel free to reach out on my Facebook page: facebook.com/hydrogenguys
awsome thx i was just about to ask
Many years ago I ran my old Rover car on gas and made a valve that let gas through on demand, so no gas until suction from the inlet valve and that worked very well I would think a suction valve would be ideal for HHO.
do suction valves stop the gas from flowing back like a flashback arrestor? or did you have to add them both onto your gas line.
The flashback arrestor up against the intake is a smart move. I would place seals between the plastic washer and the intake to make sure it is air tight and possibly a seal between the arrestor and washer as well.
Good job,best video on this subject I have seen on TH-cam 😊
I wonder if the timing of the spark can be advanced to after top dead center to prevent flash back, due to the nature of the way HHO burns
Hi. Thankyou for the comment.
The timing should be retarded to Top dead centre for safe operation, but to get the most out of the fuel I found that timing can be just before top dead centre, but if you go to far then piston slap can occur.
Hope this helps
So the engines retarded..a few degrees for best efficiency 😅
Any advice for non asperated diesal engines trying to reduce fuel consumption by adding hho to the airintake
Ta very much
The Nitrogen that you dont have in your engine plays an important part in combustion.
It absorbs the heat from the initial combustion of the fuel and oxygen and reduces
combustion temperature, then it expands itself in the process of absorbing that heat so you dont lose that much expansion.
When you burn just fuel and oxygen, you get out of control levels of heat and burn pistons and valves ect.
If there is a plastic plate as you call it? Also looks like a spacer, it is normally there as a heat sink, so that the carburettor
does not get too hot. This is to stop the petrol evaporating from the carburettor before use!
Looking at your drawing, it looks like there would not be enough diameter to feed the engine?
Mind you, this is probably not to scale.
I do like the way you have made it nice and simple to understand. Thanks for your drawing, have a great day.🤪
How do you calculate how much hho gas volume you need based on the specific engine and cylinder size, along with a rough estimation for how long you can run it.
I found an HHO generator model that puts out about 2.5 LPM, I think if I doubled the model 5 LPM would be enough to fuel an engine like this. He runs the engine at 50 PSI in a later video, so I think I would need a generator that produces 4.2 LMP, if I can get an output of 5 it would be perfect.
Based on my calculations 4.2 liters/minute at 50 PSI will produce 2.1 LMP per cylinder.
Since the flashback arrestor has a diameter of 1/4", so the max flow of gas at 50 PSI is about 2.1 but your gonna need one per cylinder, and lawnmower engines usually have 2.
TDLR: 4.2 liters/minute at 50 PSI will produce 2.1 LMP per cylinder. You should shoot for a gas flow of 5 LMP though to be safe.
@@zephyrtolliver4113 Hello, if I understood well, you need 6LPM of HHO for a 7kM motor elec generator. Am I right?
@@AirGunPoland I beleive so. Those calculations were based off of this particular 2 cylinder lawnmower engine. 6LPM would take a lot of power, so if you're planning on powering the HHO generator with the electricity from the electric generator, while it should work, don't expect to have much extra power in reserve.
Hi,
Can you tell me what kinda arrestor did you use? Can we use acetylene flashback arrestor too?
Some Acetylene ones say they are compatible with hydrogen up to 3bar so don’t see why you couldn’t use them,
When obtaining hydrogen from hydrolysis for energy storage and to run an engine at a later time to generate electricity, would you store is as HHO or Hydrogen?
I would recommend pure hydrogen gas, it’s harder to get but is safer.
Have you tried using a small car LPG gas regulator because it worked for me but as you have already noticed that the HHO unit does not produce enough pressure and gas to keep the engine running if we can work that out it would run.
yes LPG carb does work but for pure hydrgen only, we used a LPG carburettor in one of our other videos.
using a LPG carb for HHO didnt work so well for us.
The plastic plate is to stop heat sink into the carb. That can cause fuel vapourisation in petrol/2 stroke engines..
Great job, but if you let the engine suck vacuum from hho it's will work better and the production of hho under vacuum more higher than normal, the more vacuum the lower current.
Briggs 18HP Lawn mower engine ran on water in carb 2008. 6-10amp pulses THROUGH SPARK PLUG from on board ring dual alternator with late ATDC timing, Small Hydrogen formed at plug + water vapor pressure same time. S1R9A9M9 discovered this new process. Self sustained as ignition high volts is by Magneto - not battery coil. Triple hand wound coil forms magnetic field over plug wire extending timeing 0-minus 34 degrees. Accessory spark gap required while EGR of embedded nitrogen compoinnds increases efficiency if used. Battery start, then disconnected. See videos 1+2!
Try advanced timing just before tdc for knock correction i believe it could be cause in ur valve issues hydrogen has slight imploding effect just before explosion
hydrogen burns soooo fast that the spark needs retarding
do you think you could create the engine in a vacuum reducing noise?
It would operate fine in a vacuum as the oxygen is present in the fuel.
It would operate fine in a vacuum as the oxygen is present in the fuel.
can you run 100% on HHO gas? May be if you know your create HHO kit according to Car AMPS
Where do you get the flash back arrestor in the U.S.
Feel free to contact me on the 'Hydrogen Guys' Facebook page for the Hydrogen Flashback Arrestor used in this video
facebook.com/hydrogenguys
Would it work in car if injected in air intake mixed with gasoline? Do I have to mess with ecu sensors?
thank you for the details, maybe would be great if another vid on four-cylinder / carburetor cars? thanks
What about choke 100% and feed gas into fuel line that should be about the same thing? The other thing i was planning is the HHO bubbles through bottle of gasoline?
run your hho line into the fuel feed hose is looking for trouble -carby bowl willfill up with hho and will ignite blowing the carby off the engine
How long can it run straight?
A gas engine is also an air pump, since your design restricts most air flow it will be interesting to see how it performs.
you can see the engine running in one of our videos, it did run well but consumed alot of fuel.
Yes ICE are air pumps that generate lots of heat. Any restriction in the air intake will decrease the efficiency of the engine.
@@brettjasonheadinventor or in the exhaust
Hho already comes with air
@@brettjasonheadinventorso it seems we need a better hho generator 🤔
I wonder if a SLS metal printer made lattice structure would provide adequate surface area. To the best of my understanding efficiency of the generator is what holds this back from mainstream use.
Where do you get the backflash thingie?
You can find them online, or you can message me on the ‘hydrogen guy’s’ facebook page where you can buy one from me to support the channel.
Hi James,
Nice video you have helped me a lot.
Have you thought about injecting the HHO directly into the combustion chamber and welding the intake valve closed?
I want to say "Remove the intake push rod, leave the welder on the shelf." as a simpler means to accomplish the same thing.
Combustion stroke both valve intake and exhaust are normally close,so much better you install one way valve from the hho line,to avoid flash back thats it.
Does not it create a vacuum at first start, (if you block air intake) that prevents it from turning over at the pull of the pull start?
I'm sure it would do. I tested the method and it did work, and was very easy to turn over by the pull cord still.
Para motor 2 tiempos qrrestallamas obligatorio, para 4 tiempos innecesario
why is it easy to get distracted with Nox emissions. when the advantage of hydrogen is that the IC engine needs to be redesigned , it should not be air breathing ,
1. you can remove the inlet valve as HHO mixture already contains proportionate hydrogen and oxygen mixture 2:1 as a provision through fuel injectors or carburetors (whichever is efficient for ignition)
2. with only a exhaust valve meaning less complexity and wear and tear of valves is reduced by half .
3. for lean or rich fuel mixture ratios - the HHO generator using electronically calculated ratios with a minimal buffer storage of oxygen in isolated chambers.
(probably modifying fuel injectors to create HHO truly at the last mile or on-demand. )
with fuel injectors based hho production just like inkjet i believe the you get nascent hydrogen and , nascent oxygen.
You should put a link
Can we use hydrogen in petrol car?
The modern cars have a lot of sensors which makes the use of HHO pretty challenging.
Guy where can I buy the no return valve
you can find the HHO valve online, 'HHO flash back arrestor'
Wouldn't straight hho melt the engine
It ran fine on HHO, check out the short video of it running, it just drank a lot of fuel
This is perfect equation i needed
glad you liked the video.
100 percent.... Your check valve needs to be closest to where source of flame is
How would I add oil if I wanted to run a 2 stroke?
HHO on a 2 stroke would be very difficult, as any flashbacks from the combustion chamber would into the crankcase igniting the HHO in there too, not impossible though.
I was thinking of such a project.
One in which HHO was produced by photovoltaic panels via electrolysis, then the HHO to be used by power generator converted to burn hydrogen like yours.
And replacing a battery storage with a HHO balloon.
Will that work fine?
Personally I would use pure hydrogen not hho gas.
So like you said, you could use solar to make electricity to make pure hydrogen, then store the pure hydrogen safely in a gas tank (you shouldn't store hho gas). Then run the generator on the hydrogen when needed.
@@Hydrogenguys yes this sound logical. Thank you and good luck with your project. 🤝🏻
Is yours blocked? For that to work, your HHO production has to volumetrically match the cylinder volume, right? Maybe match it as propane air/fuel ratio..
Good point, but the engine will run with a small amount off HHO at a time, but yes you will need to make alot of gas per minute, for example a 200cc Engine will need at least 8 to 10lpm of gas.
If you mix it with air from the atmosphere the gas will become less powerful.
Hydrogen tends to run very lean. JCB found that an issue with their diesels. But they got it working perfectly 👍
Why are other videos showing the methods they are
Did you run on pure Hydrogen as well?
You need a 2-stroke engine two separate intakes and a small exhaust
One for hydrogen, one for oxygen
Pressurized h and o
Run
Watch HP
This needs to be developed
Sounds like an interesting idea!
Thankyou for sharing.
adding more air to the burn helps, so you got that part wrong , 0ther wise it would be a closed system
HHO is made up from 'Hydrgen, Hydrogen and Oxygen' this is the perfect ratio for combustion, therfore no extra air is needed.
Thank you that was what I needed and I'll build a flashback arestr for my generator and that's one way to check if it back fiers.
did you realise youre actually running an implosion engine in this setup ?
the pre-ignition in these engines is usually hard set on several deg before tdc
pure HHO implodes
so when the HHO enters the cylinder, it has a "high" volume.
when ignited, HHO converts back to water
water has 1/1800th the volume of HHO and thus you het a vacuum at several deg before TDC ....
its strong enough to make the engine run :)
Absolutely great strait forward vid
I have a question. If I have separate hydrogen and oxygen should I still reduce the air intake?
not if youre just putting hydrogen in.
Nice job..love to see..can we use HHO from a tank instead of ballon so it runs longer ??
the problem im discovering with bottling hho is that pressure will just re condense back into water. so what you need is to configure a dry fuel cell to separate its manufacture of hydrogen and oxygen, then you can bottle either separately. I think the highest psi I've heard of before weird stuff starts to happen to the hydrogen is around 2000-2800psi. anything past that and you're entering the realm of liquid hydrogen and that requires liquid nitrogen to keep cool otherwise as it heats back up in the bottle at 3000psi, that pressure will continue to increase and now you have a pipe bomb. So just separate the hho into h2 and oxygen and then you can use valves to remix at the combustion source. make sure you have flashback arrestors, and somethign to dial down the released gas, because hydrogen can self ignite from its own friction generated from leaving the bottle. The dream is to make a system where you can generate your own gas at home (maybe solar powered), and bottle it yourself. This lets us circumnavigate the need for $10k batteries or expensive gasoline. NEVER USE CO2 BOTTLES TO STORE HYDROGREN OR OXYGEN>>> CO2 BOTTLES ARE RECYCLED/AGED BOTTLES ON THEIR LAST LEG OF LIFE> NOT SAFE>
@@TrueHelpTV if we use a compresser to bottle it up so it can store in a tank with enough PSI?
@@protein.planet-uae i would assume that the pressure would cause the h2 and O to recombine into h2o=water.. you have to separate them. plus i've always heard because they do different stuff at different pressures, you can have spontaneous combustion if you pressurize hho. so yeah.. split your hydrogen and oxygen production before bottling or you're gonna have a bad time seems to be the general consensus.. don't go past like 2800psi either.. and don't use recycled co2 bottles.
Three problems to fix , more vavle lash = less overlap , retard timing to before top dead center, or leave timing alone and add co2 too slow the burn .
I wonder if it is possible to implement this concept on a modern car.
Of coarse...
You might get some computer error messages and codes screaming at you . But there are ways to correct for this problem
I suggest you do alot of research first... Hydrogen is one of the safest gases out there but can also be one of the deadliest...
Why not direct inject the HHO?
You could, that’s would be a lot better too, but more complicated to make, this was just an easy alternative.
Just use steel wool in a fuelfilter as arrestor
I'm sure you could, but makes more sense to use an actual flashback arrestor for safety.
I bought a kit from Labellahho but they are no help at all. Anyone knows it can recommend me a shop in southern California where I can install the kit. I'm have a 2018 Chevy Silverado
Yes
I want to search for this topic, I want to analyze a thermodynamic calculation of the engine
problem no 1 hho flash back arrestor --where to find
This is an old video, but you can get the flashback arrestor from the Facebook page, ‘Hydrogen guys’, the link is in the description. Hope this helps
Are you talking about running a engine entirely on hho kit
yes, but the HHO kit would have to make alot of gas to keep this engine running
Inject it directly into cylinder
Good content....
You can’t store large quantities of HHO since it’s way too dangerous , I can’t imagine a scuba tank filled with this stuff at 200 psi going off .. that’s worse than a bomb .
yes storing HHO gas is very bad. would only ever recommend storing pure hydrgen gas.
Vary good
Good content
You need large production HHO , with out resonance it is impossible. You need more learn Nikola Tesla patents, other way you are in Dead End
Dude where's your car running..and no you need 13H to 87O. It can vent to atmosphere if hho hose is not by the carb.yip put your hho into by the butterfly as close as possible.also H can escape a 2mm gap and octane cannot. Dude are you sure an erred your model!!!!!!!
Thanks
Hho mixed is too dangerous
That's why it needs separation.
Its all about timing.
A little bit over engineered IMHO.. Can just make a metal block for the carburetor hole with a 3/8 8mm quick hose connector..
2 hydrogen and 1 oxygen alone, so a lot of hydrogen gas is needed. More oxygen is needed for economy.
hho over fuel dont work--forget that idea folks hho or fuel only
HHO can be used along side petrol, but this demonstration was showing an engine running purely on HHO gas.
فولتارين مسكن جيد يا ترامب
You most certainly do want air to enter in on top of the oxygen produced, about 29.3:1 as in twenty nine point three parts atmospheric air at sea level for every one part hydrogen you are producing and or feeding into the engine as the optimal stoichiometric air fuel ratio is thirty four point three to one. Minus the one part oxygen you are producing per two parts hydrogen of course will give you about twenty nine point four to one. (Air fuel ratio accounts for oxygen being 21 percent of the atmosphere already) This ratio will facilitate a complete burn and give you the most efficiency and potential energy possible.
You also want to ensure that your apparatus is designed to seperate the oxygen and hydrogen immediately as it is produced to avoid having an explosive mixture of gasses while they can be safely piped separately and recombined at your intake. This will prevent any accidental explosions from happening and ruining your day and or killing you!
This also prevents the need for a "flashback arrestor" as well as in the absence of oxygen hydrogen will not combust so you do not need to worry about the a flame traveling up the gas line or hose. The most simple design you can produce to accomplish this is building your apparatus in the shape of a uppercase H with the cross bar below the level of your electrolytic solution.
Also your solution should most certainly not be salt water or you will not be producing Hydrogen and Oxygen you will produce Hydrogen at the cathode and chlorine gas at the anode. Your electrolytic solution should be either sodium or potassium hydroxide or in the very least sodium bicarbonate. Chlorine gas is highly toxic and can kill you.