Homemade Water / Air hand pump

This is my first Instructable so bare with me

I looked on here for a hand pump to make but unfortunately there didn’t seem to be an Instructable for it, but lots of people asking how to make one.

What I wanted to do was to build a pump for water to make my own version of a super soaker, but I didn’t want to spend lots of money buying non-return values and the like so I thought I would build it from junk I had hanging around. It works reasonably well, I think you might buy one that pumps better but this isn’t bad for made of junk, it does the job.

Heres a link to an animation of the working pump

www.chrisfrydesign.com/pump.gif

Step 1 What you need

Ok here’s the bits that you will need

Parts
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a bike inner tube

Large PVC pipe (I used 35mm)

something to cap the Large PVC pipe with (I used 2 caps from some supplement bottles, whatever will fit that’s plastic, you could cut them out of a plastic sheet) and you will need to make 2 little caps for the valves so you will need some plastic there, maybe some plastic from thick bottle lids or make up tubs or something would be suitable.

Slightly smaller PVC pipe (I used 25mm)

5mm hose connectors

a piece of dowel (I used 16mm)



1 screw that will fit in the dowel without splitting it.

Vaseline (petroleum jelly) for lubricating the pump.

Tools
---------

a drill with various drill bits

a utility knife

hot glue gun and many a few spare glue sticks

---------------------------------

lets get making

Comments

[hayme]

Now this will be a nice part for my rocket launchah!!!!! thanks :D

[shantinath1000]

Very nice-  I have seen a bilge pump for a kayak that looks almost the same for sale at about $40.  Very nice DIY.

[n1cod3mus]

nice to know, i just built this out of crap i had hangging around, thanks for the compliment

[R4NS0M]

lol! sometimes the most innovative creations can originate from hoarded crap. awesome instructable, keep 'em coming. :-)

[pmartinez]

Nicely done, one quick question, do you think a spring can be placed so the plunger can return to the up position by itself. do you think that will make pumping easier. Thank you for the instructable very nicely done.

[ToniRose]

Nicely done. Have you tried using it in reverse, as a vacuum pump? That's what I'm needing, to vacuum seal food containers.

[n1cod3mus]

actually this might be better suited, this is designed to be a vacuum pump, submitted by another member

http://www.instructables.com/id/make-a-manual-vacuum-pump-for-under-%2420-by-convert/

[n1cod3mus]

yes it can be used to suck air out of something, i did it with a 2lt bottle and it completely colapsed it, but to vacum seal food you would need special bags or normal bags and a heat sealer.

[McGrep]

 I like this, it's a very resourceful solution to a broken air pump. I might try it sometime, as my air pump recently broke. :)

[n1cod3mus]

i used it to inflat balloons today hehe, it worked really well there no reason it wouldnt work on tyres or an air bed, it pumps air really well and at a decent pressure.