Need better pilot valve

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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jackssmirkingrevenge
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Wed Apr 14, 2010 1:31 am

Matt_NZ wrote:I've heard of such paintball tanks exploding from oil in the fill valve.
There are definitely cases where this has happened when filling with oxygen, but when filled properly with compressed air or CO<sub>2</sub> this is highly unlikely.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Technician1002
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Wed Apr 14, 2010 1:55 am

Sudden application of high pressure air on an oil will create comprssion ignition of oil. This is very common and is used in every non glow plug diesel engine manufactured. Do be aware that this does happen. Compression ratios of 15:1 to 25:1 are typical in engines. The pressure needed to cause this can be as little as 250PSI. Filling a paintball tank to 1500 PSI is plenty of pressure to cause ignition if not done slowly and oil is present.

CO2 does not ignite oils. Air can. Oxygen will.

http://forums.paintball.com/showthread.php?t=28709

http://www.billspaintball.com/vb3/showt ... hp?t=13189
Last edited by Technician1002 on Wed Apr 14, 2010 2:09 am, edited 2 times in total.
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chinnerz
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Wed Apr 14, 2010 2:03 am

hmm, learn something new every day..... but are those oils used in lubrication? exactly how worried should we be :shock:
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Technician1002
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Wed Apr 14, 2010 2:10 am

If you are working with air over 200 PSI, use of oil should be a serious concern. Oiling common air tools is for under 150 PSI.
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chinnerz
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Wed Apr 14, 2010 2:23 am

i will be working with that kind of pressure soon..., what kind of lube would you use
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Matt_NZ
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Wed Apr 14, 2010 4:51 am

chinnerz wrote:i will be working with that kind of pressure soon..., what kind of lube would you use
I found this product click here

This is the best I could find. IMO these "oxygen rated lubricants are not cheap best to avoid oil, in your pneumatic guns."
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spudkpi
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Thu Apr 15, 2010 9:26 pm

THis thread turned loopy haha :lol:
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