I had the same problem with the diaphragm not reseating properly and constantly had to open the valve and reseat the diaphragm manually.

I found out that the bottom of the diaphragm was catching on a tiny lip where it seats, so I sanded the lip off and smoothed it over with a fine grit abrasive ...

That was great, somewhat catchy

i read some where in this forum that the average sprinkler valve can withstand more the 160 psi :)

Although I have never used my sprinkler valve at that pressure, continual use at 160psi may be somewhat detrimental to the valve.
I get adequate power at the 100-120psi range with my sprinkler ...

nosnik wrote: you think the blowgun valve will hold up?)

The Question is whether the sprinkler valve will hold up...Your average sprinkler valve isn't usually taken much past 120psi.

from what ive found, the fittings i n bunnings are PN18 and they also have pn12 40(perfect GB barrel :D ) & 50 mm by the meter. in the one i went to it was out with all the long timber etc, out the back.

EDIT; they may have even had larger sizes, but i was not looking

When I went to one of ...

Beautiful, your hard work has definitely paid off

Nice work, love the simplicity of the check valve

Ahh yes, you did say that your fan died on you, but I failed to take note. Hopefully you get a new fan up and running soon so you can wreak more havoc on more inanimate objects with this beast.

You certainly fixed it aha
Nice work.
Any improvements with changing the MAPP gas pressure?

Sounds a bit like the metering system used on the 'BL-520'

http://ultimatespudgun.com/product_info ... cts_id=178

Indeed "WTF?!?!" haha
How strange. Well I love the simplicity of your design, I may have to make something similar for one of my future projects

15mm Poly pipe fits AA batteries Perfectly, no tape required-I recommend you go and get a length of it.
But yes, nice simply launcher-thumbs up

Very nice.
Aesthetics and ergonomics, mmmm

littlebro05 wrote:do you know any good 18mm ammunition?

Wadded marbles......

Well, MERRY CHRISTMAS spudfiles