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check 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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check valve

Unread postAuthor: Major Collins » Tue Jan 24, 2012 12:24 am

http://www.ebay.com.au/itm/Non-Return-V ... 672wt_1110

does anyone know roughly the least amount of psi generated to push the valve or open up the valve?

and what psi are they rated too? i saw one on someone else's stirrup at 700 psi
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Unread postAuthor: Crna Legija » Tue Jan 24, 2012 12:57 am

ask the seller not us!
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Unread postAuthor: FighterAce » Tue Jan 24, 2012 3:24 am

I've had the exact same type of valve and I can tell you they're pretty bad... the piston is sloppy in the brass guides so it tends to miss the seat and leak. Maybe this is not the same manufacturer but still... it has a plastic piston and a seat over .748". Using this on a pump for 700 psi is just asking for trouble IMHO.

Perhaps the person in question just used this valve as a housing for a check valve with a much smaller seat.
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Unread postAuthor: Gippeto » Tue Jan 24, 2012 9:04 am

Crna Legija wrote:ask the seller not us!


Good answer! :)
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Unread postAuthor: Technician1002 » Tue Jan 24, 2012 9:16 am

Check valves for hydraulic systems or a power washer may be a better match.
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