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Starting a new build

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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Re: Starting a new build

Unread postAuthor: jackssmirkingrevenge » Sun Sep 16, 2018 4:44 am

Flounder wrote:I am at a loss for the required information for the valve information. I plan to use Mcmaster Carr part number 6646K23 That I have seen used for several builds on the forum all ready. Any advice you can provide would be appreciated.


This should give you a very good approximation:

6646K23valvedata.png
6646K23valvedata.png (2.81 KiB) Viewed 41 times
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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Re: Starting a new build

Unread postAuthor: Flounder » Tue Sep 18, 2018 9:04 am

Thank you for that information. I had to poke around to find how to change Flow Coef to Cv instead of %.

On to another question. Has anyone tried using a slide gate valve for a breech? I have found a few but they only have a 40 psi rating. I think that would be ok since I am running relatively low pressure in this thing, but I was hoping for input from the people who have been doing this a long time.
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