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schrader valve install

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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schrader valve install

Unread postAuthor: NoHands » Fri Mar 04, 2016 4:43 am

12380464_10206905213502635_792875824_n.jpg
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Gday guys
I'm looking to make a bait castor cause i'm a quadriplegic and I need carers to cast for me, I have made this (not glued yet)
I don't know how to put the schrader valve in any advice would be great.

Shane
http://www.higherthansuperman.com
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i'm a quadriplegic on life support with no movement but my chin
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Re: schrader valve install

Unread postAuthor: NoHands » Fri Mar 04, 2016 10:27 am

would this be sutible
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Re: schrader valve install

Unread postAuthor: matti » Sat Mar 05, 2016 7:43 am

Welcome to spudfiles !

That schrader valve looks to be ok for at least up to some pressure. I believe most prefer to use threaded ones and tap a hole to part of the chamber in a place where there is a fitting and pipe so a double wall thickness area. This requires a drill + (probably) 1/8" pipe thread tap, so it requires more work and tools.

Edit: Here is one example of placing a schrader valve (it has threaded schrader valve):

https://www.spudtech.com/detail.asp?id=52
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Re: schrader valve install

Unread postAuthor: cammyd32 » Sat Mar 05, 2016 4:12 pm

I have used schraders like that up to pressures far in exceeding what would be safe for PVC, so yes I believe it would be suitable, just make sure you tighten it up tight.
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Re: schrader valve install

Unread postAuthor: Gun Freak » Tue Mar 08, 2016 11:08 pm

Easiest way is to get a threaded (1/8" or 1/4" commonly) from a hardware store, then use the proper fittings, adapters, and bushings to get down to that size from your pvc!

Also, double check your fittings are NSF-PW and not DWV, especially that big reducer.
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Re: schrader valve install

Unread postAuthor: NoHands » Wed Mar 09, 2016 12:29 am

how can I check that mate (the nsf-pw)

my old mans got me worried bout the thing blowin up but it should hold 70-100 psi fine shouldn't it?
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Re: schrader valve install

Unread postAuthor: matti » Thu Mar 10, 2016 7:22 am

NoHands wrote:how can I check that mate (the nsf-pw)

my old mans got me worried bout the thing blowin up but it should hold 70-100 psi fine shouldn't it?


I don't know about your fittings because here in Finland we have different ones, but at the end of fitting there is normally a text that says if it's pressure rated etc.
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Re: schrader valve install

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Re: schrader valve install

Unread postAuthor: Gun Freak » Mon Mar 14, 2016 4:22 pm

Like Matti said, check the end of the fittings on the small edge portion. It will say on there. I know a guy whose chamber blew in that pressure range because he was using DWV, so make sure it isn't. Those bell reducers aren't typically meant for pressure.
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Re: schrader valve install

Unread postAuthor: NoHands » Mon Mar 14, 2016 7:01 pm

hi @gun freak
what do you use instead of the bell reducer?
put on a end cap n screw into it?
thx
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Re: schrader valve install

Unread postAuthor: matti » Tue Mar 15, 2016 1:25 pm

NoHands wrote:hi @gun freak
what do you use instead of the bell reducer?
put on a end cap n screw into it?
thx


I know you pointed the question to Gunfreak but I'll just say that there is two type of reducers 1 is the bell reducer and second is a bushing reducer. Bushing reducers are the common type in pressure rated fittings.

Look this: https://youtu.be/WDd0jNj7kWE

And

Example of use: https://www.spudtech.com/detail.asp?id=52

Hope this helps 8)
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Re: schrader valve install

Unread postAuthor: jackssmirkingrevenge » Tue Mar 22, 2016 8:10 am

Awesome project!

If you intend to use relatively low pressures (say 50 psi) you can install it the same way it's installed in an automotive tire.

Can I also suggest using a sprinkler valve instead of a ball valve, since it can be fired electronically you could rig up a switch that is much easier to activate.
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