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Large Piston Valve Pilot 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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Large Piston Valve Pilot Valve

Unread postAuthor: Gepard » Mon Jul 09, 2007 9:44 am

Hi,

I'm about to start purchasing all the parts for a 3" porting piston valve and am trying to find a suitable pilot valve for it. Since I'm over here in the UK where sprinkler valves don't exist would a 3/4QEV be just as acceptable? Or should it be looking at possibly dual QEVs?

Cheers,

Michael
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Unread postAuthor: lukemc » Mon Jul 09, 2007 10:07 am

why not just a 3/4 inch ball valve? it would be expensive but much better flow than a QEV
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Unread postAuthor: Gepard » Mon Jul 09, 2007 10:10 am

'Cos a 3/4" QEV is better than a BV and I have one here atm.

Michael
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Unread postAuthor: jackssmirkingrevenge » Mon Jul 09, 2007 12:30 pm

assuming you kept pilot volume to the bare minimum (ie only allowing it to move back 1/4 of the barrel inner diameter like for example 0.25 inches for a 1 inch barrel - this is all you need for maximum flow, anything more is wasted pilot volume) then a 3/4 QEV is more than suitable for your needs.
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