hammer valve

[mouz]

i think my next project will be a hammer valve sorta like boars, just much smaller. i think the gun will be about .30 cal, because then i wont need to let out so much air to fire it hard enough. should i use O-rings? or should i turn something out of rubber on my lathe? or should i use faucet washers?

[Pellethuntr]

if you can turn something why don't you use some sort of plastic or resin roundbar like teflon or delrin??? im not sure of what boar used but I would imagine you could do it on a wood lathe easy enough

[boar]

i started with o rings and they worked fine at low pressure and still held at 5-600 psi but they poped off on firing i think that could have been solved but went with solid delrin for the seal as i had some layin around and its workin fine im also tryin that on my pump but havnt got the shape just rite yet

Boar

[mouz]

i don't have any Teflon or Delrin, and i wont be going over about 300 psi.

[Pellethuntr]

should be something that you could pick up cheap...I think mcmaster-carr sells teflon rod for about $1 a foot depending on OD but im not sure...

[Pellethuntr]

Here you go mouz this is the site search for teflon and I would say about a 3/4 inch rod will do... it's about $8 a foot... http://www.mcmaster.com/#plastics/=8aj5np