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High pressure schrader valve

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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High pressure schrader valve

Unread postAuthor: kjjohn » Sat Oct 17, 2009 10:06 pm

Does anyone know where I can get a schrader valve rated for 500 psi or above for under $40 and with NPT threads? I checked with mcmaster, but their only valves rated for those pressures cost like $42 and don't have NPT threadings.
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Unread postAuthor: Gippeto » Sat Oct 17, 2009 11:33 pm

You can get RATED cores here;

http://www.aircraftspruce.com/search/search.php

As for the rest of the valve, have a look through this;

http://www.spudfiles.com/forums/the-fai ... 15393.html

I bought the valve from Princess Auto...two for $3.49 IIRC. :)
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Unread postAuthor: kjjohn » Sun Oct 18, 2009 12:36 am

thanks, helps alot
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Unread postAuthor: jackssmirkingrevenge » Sun Oct 18, 2009 12:42 am

I find that ordinary unrated schrader cores can take 800 psi or so without any ill effects.
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Unread postAuthor: D_Hall » Sun Oct 18, 2009 12:47 am

Ever think of just using something other than a schrader? By the time you're dealing with such pressures, you're no longer dealing with shop air. At that point... Well, I don't understand why anyone would use a shrader anymore. Much better options abound.
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Unread postAuthor: starman » Sun Oct 18, 2009 2:56 am

D_Hall wrote:Ever think of just using something other than a schrader? By the time you're dealing with such pressures, you're no longer dealing with shop air. At that point... Well, I don't understand why anyone would use a shrader anymore. Much better options abound.


Thank you Dave for standing up and calling the king naked. The whole schrader/air chuck thing is far inferior to modern quick connects.
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Unread postAuthor: POLAND_SPUD » Sun Oct 18, 2009 11:47 am

yep but you might consider buying QC fittings rated to high pressures... not just those you can find in a hardware shop
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