I will take some pics this weekend and post them up, everything is in storage and it will take that long to pull it out :ninja:
A word of caution, I had issues with my valve and I used the same exact webpage that you have listed.. if you look at how the pictures show how to put it together (note the flow direction of the valve) and then if you look at one that propmaster allready built (in one of the movies) if you look close, you will see that his valve is put together backwards from how that picture shows..
I had a terrible time with mine, but I havent tried to take it apart and reverse the orbit valve to see if that makes a difference.
Alot of people here have built these with great results, becuase of all the issues I had, im thinking I have it backwards, so you will want to try and experiment alittle with it.
Id allmost suggest getting bimba cylinders from eBay, I ended up buying a 1/8? tap and handle to thread the door closer, which was around 6.00-8.00 and with all the brass fittings I used, I think I would have been better off buying a commercial cylinder, as long as you take your time, you will find one for as much or even lower than what it might cost you to build your own, in either case, ill take pictures of everything I have for you and post them in this thread this weekend.
**
I wanted to add on the commercial cylinders, if you have a heavy prop, you will want to use all commercial parts (cylinder/valve) since I would be very weary of putting more than 60-70psi through sprinkler parts, I have done it before, but it scared me to death to keep it up, mabey someone here can add a comment on maximum psi for DIY air props.
I want to buy a mig welder this year and start building prop frames out of steel so I will have to go the commercial route, I cant see a door closer and sprinkler valve lifting anything this heavy.