Rudi, my present pipe is made of carbon steel (at least a magnet will stick) with 1/4" NPT female spuds welded to it. The spray assembly (spray tip, strainer and nut) screws into the spud. The outside of the pipe, which looks to be plated, has very little rust. I am thinking that the pipe assy was fabricated and welded from mild steel and then cad or zinc plated after welding. But, I don't know this.
outdoors4evr wrote:Use the current pipe as a support and then use lawn sprinkler tubing and tees (or PEX tubing)
These are much less costly than PVC, but not as rigid so they need support.
This was exactly first thought to improve it. I am thinking about a reinforced flexible hose as PEX does not hold up well when exposed to sun and daylight. What I need is a plastic tee with two barbs and one female 1/4" NPT. So far, all I have seen is a tee with three barbs and an "L" with male threads and a barb. I am running 40# pressure.
Another option is to use copper and solder the joints. I have a piece of 1" copper, but I would have to buy all of the Tees, fittings, etc. I would still attach the copper to the present pipe for support, but the solder joints may not hold up.
The other option is to do nothing but what I have been doing. Remove 11 spray tips and plugs, clean spray tips and strainer in a bucket ofwater, flush pipe with water and air, reinstall 11 spray tips and plugs, mix GL-4 and spray fields. Repeat the next time that I spray.