Just bought a bigger compressor and built a dryer pipe loop

scubajeeper. I finished building it yesterday. The height of both loops are the same 7'. The length of the intake loop is 8" shorter on bottom ,so I would have room to attach self empting air water filter. The outlet section of 2nd loop has a drain valve in the bell on the bottom. Both inlet and outlet valves are four feet down from top. I ran for 2 hours yesterday ( it rained all day that day) and no water at all in the Altros water filter trap, that feeds to the decissant. After I designed this I took it to a friend who was in the Nave for 31 years. He said he built hundreds of the water driers for the Navy. He now owns the biggest plumbing, heating, and electrical supply in our town. He is also an air gun shooter and owns many of them. According to him it doesn't have to be very tall . Most of the ones that he built, were only four feet . But, he said if you go the short route, you need to put three or four loops on it. He also suggested I use black pipe so no scales in the filters. It is same cost as galvanized. The total cost was 55.00. Where are you going to buy any filter as good as this for that kind of money. I phoned in the parts I needed. 2-four foot lengths of black pipe ; 1-two foot black pipe; 1-two foot eight inches black pipe. 3 ells;1 four inch nipple to join top section together. 2 Tees for air intake and oulet; 3 bushing to reduce tee hole size ,for the quick connect. 1 bushing on inlet side bottom with bushing, to quick connect automatic water filter drain. I bottle of pipe dope/ w silicon. This pipe dope is the best sealer for this kind of pipe . My total cost is only 55.00. Total time to build was less than an hour. I was blown away that the day was so humid and rainid hard all day.and not one drop of moister was in any of the altaros filters. I have enough dope left to build two or three more. I think i'll help my neighbor build his system . He is a trucker and uses a lot of air tools works on his trucks. He also does a lot of painting truck parts and has trouble with moisture. If I can help anybody on this simple air dryer system let me know.

[url="https://s19.postimg.org/nf562of37/20161123_145833.jpg"][img]https://s19.postimg.org/nf562of37/20161123_145833.jpg[/img][/url] The air from compressor moves to first pipe ,cools and moisture falls to auto flow water valve at bottom of first line. Any left over moisture that makes to top into other pipe falls to bottom of pipe, where you have a drain valve. The outlet and inlet valves are up higher and T off the main lines. This keeps moisture from entering the outlet line. It has been cold and raining here for two days. this safe room is just inside my garage and two feet from garage door opening. The garage door has been up both days and not one drop of moisture in Altaros water filter. When I was building it, I really didn't think it would work . A man from England was telling about how great his was , so I thought , they have a very damp climate in England and if it works there . Its got to work here. He built his from pipe he had laying around his house. There are many ways to build these dryer loops. I have seen them with 4 loops, 5 loops, taller and shorter. His was simple and worked for me. I can always add more loops. You are just cooling the hot air from the compressor and keeping moisture from entering your air lines to your tank. 

I thought the same thing about pvc , jking, but several that built them said not to use it. They didn't say why you shouldn't. Afriend of mine that was in the Navy for 31 years said he had built hundreds for the Navy and they would only build them with metal. He said he only used black pipe and or copper tubing. He said never use galvanized because it would flake in the air supply. Maybe pvc puts more moisture in or something to do with air pressure and pvc. All I know is that it was easy to build , didn't cost much and it works.

jking it is the husky twin cylinder. It puts out 155 psi. 5.3cfm at 90psi and 6.2cfm at 40psi. Model # C302H . It is Husky Ultra -Quiet model. I bought because I only read good to excellent reviews on it. Only time will tell if it holds up or not.

I have seen some oil, It was in the water filter, on the bottom of the first line. So far I havent seen any oil or water in the first water filter on the Alrtaros.