psi and fps??

I am wondering how much fps/ a 300 psi/ is. Iam icelandic and not wery good at english but man when i´m finished making my air rifle you´ll get the best instructable you´ve ever seen!!!

Posted by Enzo55 11 years ago  |  last reply 11 years ago

PSI Question

I just built a fairly large air cannon,and I want to know how much psi the air chamber can take before it blows.The air chamber is made of 3in. diameter 5ft long pvc pipe.I would appreciate the help.

Posted by Sedgewick17 11 years ago  |  last reply 10 years ago

What is the maximum PSI a polyethylene 'tote' water tank can hold? ?

I am building an irrigation system, and I have an Plastic 100 gallon translucent poly tank that is square with skds on the bottom and top.  It was previously used for holding and transferring used vegetable oil.  For my irrigation system to work properly I need to find out if it will safely hold 70 PSI of air pressure.  It looks like it would, I THINK it would.  There is a molding seem in the middle all the way around which I thought I could wrap a tow strap around for added strength.  I know they are not designed as pressure tanks, but surely someone out there knows what the breaking point of one would be? this link shows what it looks like; Thank you very much for any help I can find. Larry

Asked by biggestdog420 6 years ago  |  last reply 6 years ago

How much cfm psi in a can of propellant?

I want to sandblast/etch an image onto acrylic. so i was wondering how close do the specs of canned air get to an actual sandblaster. Ive searched and couldnt find this anywhere. How much cfm and psi is there in a can of propellant. Can anyone help me with this?

Posted by bsmith102 5 years ago  |  last reply 5 years ago

How much psi can an average 500 ml water bottle hold?

I'm making a soda machine with the "Carbonating: The cheap and easy way", and I would like to knwo how much pressure it can take, as I would prefer that my soda doesn't blow up in my face :)

Asked by bombeano 5 years ago  |  last reply 5 years ago

what psi does the How to- Assorted Air guns by minerug need?

What psi does the How to- Assorted Air guns by minerug need?

Asked by hazzad 9 years ago  |  last reply 8 years ago

Is it possible to turbo boost a turbo? Answered

Question says it all, and is kinda overkill, but did anyone tried it?

Asked by ARJOON 5 years ago  |  last reply 5 years ago

how much psi can a a1 steaksauce container hold

I have a project and i need to know how much psi a a1 steaksauce container can hold

Posted by rollingstoner357 11 years ago  |  last reply 10 years ago

How would i test the explosive pressure of an aerosol?

Im trying to test how many pounds per square inch (psi) i can get out of axe body spray when i light it on fire. I was thinking a piston thing, but i dont really know how it should be

Asked by thenewdoctorwho 9 years ago

Repair of a lower pumping unit of a power washer.?

A couple years ago we purchased a 31/2 hp power washer for those really tough grimy jobs around the house.  Last winter we left it outside by mistake and I suppose there was enough water in the lower unit to freeze and bust.  Anyway now it won't work, it just spews water everywhere coming from the lower unit.  I called the company and asked to purchase the lower pressure unit to replace myself, but they would not sell it to me. In fact the lady told me that the lower unit could not be purchased, but that I would have to buy all the necessary parts to disassemble it and replace the parts. When I told her it looks as if the pressure unit bolts onto the bottom of the motor with 3 bolts and perhaps was keyed onto the shaft with a keyway, she then changed her story and gave me the name of a hardware store in a small town about 20 miles away who could repair it. I took it there and the owner told me that "Sure you could buy just the lower pressure unit and he could fix it for $175.00"  I realize it was my mistake leaving it outside under my deck in the cold weather, but gee I only paid $198.00 for it brand new and the Briggs & Stratton engine still works fine. Can anyone help me?  Thanks--Debra Kay

Asked by Debra kay 8 years ago  |  last reply 8 years ago

Stainless steel. Minimum PSI rating?

G'day I have done the obvious searches, with no luck... So I was wondering.... Does anyone know if stainless steel tubing, has a minimum standard PSI rating? I ask this because today at work I found a hidden stash of old Stainless tubing.... It's cheap because it isn't a carried line anymore.... But the manufacturer or any trace of packaging/PSI is long since gone.... I'm talking $8 AU for a 6metre length of 16mm Stainless with a wall thickness of 1mm, and $12 for a 6m of 30mm .... Is there anyway of telling what PSI rating, it would have from the gauge or internal seam..? I am aware that most stainless for pressure is generally around your 1000PSI+ mark, just wanted to query you knowledgable folk, before using it for high PSI... I would appreciate any help, because I can't hide these lil' babies much longer.... There is about 15 length's of each... Thank in advance... ;)

Posted by Lftndbt 11 years ago  |  last reply 11 years ago

how much psi does galvanized steel hold, in compresed air?

Looking foward to making a spud gun out of metal, for high psi i know that pcv holds about 40-50 psi i want more bang for the buck EDIT¨: well i whas thinking of making a tube 1" gun of galvanised steel , pvc here is like $ 2-3 usd a tube that has like 2-3 meters, but i tought i could hold more psi in steel and there fore trow stuff  at long distance

Asked by Bhakto 8 years ago  |  last reply 3 years ago

High Pressure Shutoff? Answered

How do you make a high pressure compressor stop at 4500 psi without spending tons of money? Hopefully adjustable between 3000 and 4500 psi.

Asked by 8 years ago  |  last reply 8 years ago

Can an engine be a High Pressure Compressor? Answered

I have tried this question before but, people pay little attention it seems like.  I know you can modify engines and all that stuff so that they will compress air and all that good stuff, but CAN THEY HANDLE 4500 psi type pressures.  The heads of 4500 psi compressors don't look like the cylinders are much bigger than those on a lawnmower.

Asked by 7 years ago  |  last reply 7 years ago

Hydraulic Cylinder Compressor? Answered

Ok, so I need to make a compressor that reaches 4500 psi.  I live in a farm town and my dad has a tractor so I wondered if I took two identical hydraulic cylinders and filled one with what I was compressing, and the other I powered with the tractors hydraulic system, if I would be able to achieve high pressure and fill tanks, assuming the hydraulic pump and cylinders are rated for that pressure.  Or could I just use a hydraulic compressor.

Asked by 8 years ago  |  last reply 7 years ago

How can PSI be converted to a recognizable or commonly used force? Answered


Asked by PKTraceur 9 years ago  |  last reply 9 years ago

How much psi can these objects hold...

How much psi can a: 1. Coke Bottle 2. PVC Pipe 3. Metal Pipe safely hold? Is there a formula that I can use to calculate any vessel's psi capacity? Thank You!

Posted by La Tour Rouge 9 years ago  |  last reply 9 years ago

how much psi does a coke bottle(2l) hold? Answered

I need to know for a a canon

Asked by albf1 10 years ago  |  last reply 1 year ago

how long of PVC pipe do i need to hold 300 psi?

Asked by cody316 9 years ago  |  last reply 8 years ago

Pressure, vacuums, and the on earth equivalent?

One atm is equivalent to about 14.7 psi.  Does that mean that if one was in a perfect vacuum a vessel sporting 1 atm would need only hold the pressure of 14.7 psi?  It seems to me that in space (not a perfect vacuum) a craft would only need to hold maybe 12 psi (of course when messing with human life I would definitely allow for 150 to 200% tolerance, but in the end 24 psi still isn't very much is it.  Is there more to it than this, or are all those quotes about how hard it is to deal with a vacuum and how things must be super strong a little over blown.  Going just 11 meters under water exposes you to a little over double air pressure at sea level.  Someone in just a diving suit has been to over 60 times atmosphere and the deepest submarine dive I could find was 1083 atm at around 11000 m.  It just seems to make holding out a vacuum a little overrated.

Asked by seedorfj 4 years ago  |  last reply 4 years ago

Large High Pressure Storage Tanks? Answered

I am looking into a green power system but, I would need 4500 psi hydrogen tanks.  They are way to small to be practical, even the large 144 c.f. ones (biggest I could find).  Is there anything special about hydrogen storage tanks, or will any 4500 psi tank work, and does anyone know were to get big ones, like huge.  If not, any ideas on how to fab one.  I know a guy who is high pressure certified so he could weld it, but what thickness of metal is needed for say a 12" diameter tank about 10-15' foot long. (yea, that big)

Asked by 7 years ago  |  last reply 7 years ago

. what do I need to know about hydraulics? Answered

I'm designing a compactor, it needs to be capable for compacting bubble wrap, carboard etc hydraulic diameter? distributors? general help and information will be much appreciated

Asked by dubpunkdub 7 years ago  |  last reply 7 years ago

Why are bike tires higher PSI than car tires? Answered


Asked by Yerboogieman 9 years ago  |  last reply 2 years ago

Propane flame thrower

    Please read full post before making any comments. First of all yes, I know real flame throwers use napalm and compressed air to operate, but I don't want any crazy range and lethal power. I don't intend on using this thing in combat. I'm thinking something with a 4-5 foot flame, more if possible, (I don't think it would be with propane, but please, correct me if I'm wrong). I don't want a jet flame so I'm assuming I'll need to lower the pressure to get a more "violent" looking flame with the desired ranged. A "gas pump handle" for the flame control (sorry I don't know the proper term for that type of mechanism. it's not really a trigger. A lever valve?), or I might use a solenoid, not sure yet, Whatever would be more effective. Again, please give me any input your may have. The fuel source would be a large propane tank that I will have strapped to my back, I already have a design for that. If that seems too extreme I might do what this guy did and use a small tank with a reservoir, but with two tanks for more fuel. ( )  I'm undecided on whether I want electric ignition if anyone could give advice on that as well it would be appreciated. Anyone who has made something like this or knows what they are talking about please give me your input. Yes, I know this is a dangerous project and I take full responsibility should anything go wrong.    This is a video showing the flamethrower that in the above video being used. It displays the kind of performance I am looking for, except I don't want it strapped to my wrists.

Posted by shark4t 4 years ago  |  last reply 4 years ago

Is there an equation to figure a set amount of PSI to a recognizable, or commonly used force measurement?

What is/is there an equation to figure the speed a projectile travels, based on the PSI or force applied? What would this force be? k/h | fps | m/h | m/min. | k/min.|

Asked by PKTraceur 9 years ago  |  last reply 9 years ago

how many PSI does a 40 gague white pvc pipe hold? Answered

Just curious

Asked by pufferfish9108 8 years ago  |  last reply 8 years ago

I'm going to join two 1.25 litre bottles together for a 80 psi water rocket. Is it ok?

I'm going to join two 1.25 litre bottles together for a 80 psi water rocket. Is it ok or should i make it more longer with a third bottle? what should be the ideal volume of the bottle for good efficiency at 80 psi?

Asked by sharath rc 6 years ago  |  last reply 6 years ago

Engine to Compressor? Answered

I am planning on making a very high volume compressor from a small engine.  I plan to adjust timing and stuff accordingly.  I just wan't to make sure an engine can handle the pressure.  I assume it can because of the explosions it can contain but I just want to be sure it can handle 125-200psi.  And also, is 2 stage really necessary or can I just push all the air in in one stage with a couple pistons.

Asked by 7 years ago  |  last reply 7 years ago

PreSsure rating ball valve

On one side, the valve says 600 WOG That's "600psi water, oil, gas" On the other side 1/2 psig That's 1/2 psi gas Which side to believe?

Asked by Toga_Dan 10 months ago  |  last reply 10 months ago

Water Rocket Launcher- High PSI twin rocket racers.

Ever wanted to know how to build a twin water rocket launcher? Have some expert advice on hand? Feel free to comment and help build a full metal, high PSI twin launcher. I am looking for assistance/advice you may wish to input. I was hoping to build a substantial base for launching multiple water rockets. It has a quad manifold so further expansion is possible. As you can see from the parts, it is very simple. I still need to add a isolating valve to stop water back flow into my pump (which will be located at the end cap, after the gate valve. The release mech has yet to be designed also. Australian gardena hose quick connects are the base for this rockets release system. I hope that is not too confusing. If it is, ask and I will clarify my babblings. Thanks for the assitance

Posted by Lftndbt 10 years ago  |  last reply 5 years ago

Any advice on making a water pressure reducer set at about 10 psi.?

I know I can get a pressure reducer for an RV at 40-50 psi. But i want to make a pressure reducer that is set at about 10psi. I live on a farm and have about 11 automatic waters and inexpensive auto-waters sometimes get over powered by the 40psi water pressure. I think they would perform better on lower pressure. Can't find any advice on making something like a water pressure reducer set at about 10 psi.?

Asked by johncasey37 9 years ago  |  last reply 9 years ago

Pressure Washer? Answered

I would assume it can't be, but it would be really lucky if a pressure washer could fill an air tank to the pressure the washer is rated for.  So can a pressure washer that says 5000 psi really fill a tank to 5000 psi with the right fittings.  It probably won't be breathable or paint ball worthy but is it plausible.

Asked by 8 years ago  |  last reply 8 years ago

Everytime i air up my tires they blow. Why?

Okay, when i air up my tires on my bike, the tire comes off the rim, the tube comes out and pops, even at 55-65 PSI exactly what they are supposed to be at. How do stop this? Please!! It is getting expensive!!

Asked by Yerboogieman 9 years ago  |  last reply 9 years ago

how to make airgun valve from modded sprinkler valve with tube to blowgun?

Right, im stuck with this one, im in the uk and want to make a copper airgun with a quick fire method, i have chosen the valve on the gun in this instructable: but i have no idea how to makeit from parts in the uk, "air hose" is just not detailed enough, i need to know where to get it. by the way, im choosing to use copper instead of pvc, so i need to know how to attach the valve aswell... thankx 2 every1 its for a science project about laws of motion n i wann impress some ppl

Asked by albf1 9 years ago  |  last reply 7 years ago

What will multiple vacuum pumps do to a vacuum system, namely to PSI?

Long story short, I'm looking to make a vacuum forming table, and have most of the thing designed. However, I am looking to use two (maybe three) cheap vacuum pumps until I have the money to get a decent vacuum pump. I know that the pumps (4 CFM) if stuck in parallel will get me roughly 8 CFM, however, what will that do to the PSI? The pumps have a 90 PSI pull (if thats the right phasing to it) and I'm unsure what grade of pip/tubing to get for this. Thanks in advance!! 

Asked by DoctorWoo 5 years ago  |  last reply 5 years ago

Can I use a hydraulic pump for air? Answered

I am looking for a high pressure pump (3000-4500) psi.  I finally got the idea that I could use a pump like this: Hand Pump  I think they have a built in reservoir but I think I could pump into it at around 100 psi from a pre-compressor.  Will this work or can it not pump air. Also, would it need oiled because it doesn't have the oil flowing through.  Just so you know I wouldn't be pressuring a vessel to 4500 psi by hand, I would rig up a motor for this.

Asked by 7 years ago  |  last reply 7 years ago

i how many psi can a lighter hold? and can i make a valve to release so it stays at the right pressure?

I want  to make a mini air gun and i thought i could use a lighter to hold the air. so i need to make sure i know when its full so i can use it.

Asked by tzq33tdq 7 years ago

A neon with an a/c that just doesn't work, Now what can this girl do to fix?

I have a 05' dodge neon with an a/c that just doesn't work. I bought on of those R-134a kits and checked the PSi like the instructions say to and low and behold the gauge is reading 200 PSi. Now what can this girl do to fix the problem...any helpful tips?

Asked by AmberD5 3 years ago  |  last reply 3 years ago

How to determine the psi in a tank when it joins with a larger tank that's empty?

Ok, so I'm going to try to make this. However I want to make it so I can detach the big pvc reservoir and put on a new one for more than one shot. However, this is probably going to lower the psi when the air moves into the smaller reservoir.  One more question: my plan is to make the air tank just screw onto the gun. Will this still be airtight? Do I need a quick release valve instead of threaded pvc? My plan is to make the larger reservoir but put a ball valve on the end where it connects to the rest of the gun. This is so I can screw it on and turn the valve.

Asked by General Eggs 7 years ago

High pressure pump

Does anybody know how to build or get a pump that costs maybe like $20 that will pump to at least 400 psi?

Posted by waterrocketexpert 4 years ago  |  last reply 4 years ago

Need regulator and compact solenoid 5/2 valve for small scale Co2 powered system.

Looking to drive a 5/16ths inch pneumatic cylinder all in a self contained package. Cylinder is rated for 150 psi and the 12 gram co2 i was planning to use is 900 psi so i need to reduce it considerably. I'm trying to make a moving costume piece, not a battlebots weapon or a bomb.

Asked by Chirishman 6 years ago  |  last reply 6 years ago

The wimpy power grid! Low pressure air for little jobs. I pumped water 6 ft high with 0.2psi!

So I am not talking a 0.2 psi grid.  Anywhere from 1 to 4 psi should work for the little jobs.  All  you have to do is make feeble wind or water or solar panel or Stirling engines to power the  pumps and the pumps are just a couple of ft of tubing!  So, 1 psi is nothing! We should be able to make it in all sorts of ways.  My air comes from a 3.5 Watt bubble pump until I (or you) figure out how to run a tiny compressor off my 15 Watt solar panel.    I have a few demo videos including the one here  

Posted by gaiatechnician 6 years ago

how many psi can a 5 gallon plastic bucket (found in home depot) can take?

So im doing this for a chemistry project. My plan: to create a cannon with buckets and tubes with ping pong ball. I use dry ice and water to compress gas in the bucket and release the air through the valve. i realized that when i puff air into it and conceal it, (3 to 4 times) the bucket starts to deform.

Asked by punch2dface 4 years ago  |  last reply 4 years ago

Source for sturdy tubes + clear stuffs

I'm going to be dropping a submersible (on a rope for now, no motors yet...) about 600 meters into open ocean. This 'Sub' will need a clear viewing window for a camera, and be sturdy enough to withstand about 700 PSI, according to WikiAnswers (apparently, one vertical meter- 1.09 PSI, right? I'm missing something, aren't I.) So, how thick/ what type of tube will I need, and where can I get it? The project is secret for now, don't ask why I'm doing it.

Posted by Rotten194 9 years ago  |  last reply 9 years ago

Small tank higher pressure? or large tank Lower Pressure?

I was think what was better? a Small tank with a higher pressure? or a large tank with a Lower Pressure? Of coarse if you had a small tank you gun would look better. This is how air rifles work... you break the barrel (push it down) and that push a pump in to a small tank at a high PSI, Thats why its hard to break the barrel. I was also thinking that if you had a Higher PSI in the air resivour it would release quicker?!. What do you think?

Posted by oscarthompson 9 years ago