Made a gun of 40 mm caliber, used a piston valve. The gun works well at pressures up to 20 atm, no longer possible, because the rubber on the piston is torn.
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here is an approximate diagram of the valve. Used a coarse water filter.
PNEUMATIC GUN WITH VALVE QEV
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jackssmirkingrevenge
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Nice work! This configuration is rarely used, I think I've only ever seen it done by clide on this forum, what he called the "straight-through valve":
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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keks2033
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A few days ago, I managed to make and test a piston valve with a caliber of 40 mm. I managed to make an exit into the barrel with a diameter of 14 mm. I pumped 50 atm into a cannon with a homemade pump.