I may need to solder a tee into my 3/4" copper main water supply line, and use PVC to go from the tee's threaded output to my sprinkler controls. Lowes sells two different 3/4" tees which have sweat solder input/output and a threaded female side output. And they're both approved for potable water. Great! One of the tees they sell appears to be brass with an attached flat bracket for screwing to a support, and the other (cheaper) one looks to be bronze without the flat bracket. I don't need the bracket or flange for underground so I'm tempted to go with the bronze tee. But is bronze recommended for underground use?

Hi, I want to install a 400,00 btu modine unit heater in the greenhouse. (which is 80 feet away from the outside gas connection). I have 5 psi (35kpa) gas coming to the entrance of the greenhouse. The modine manual recommends 6-7" W.C. Once I add the pressure regulator at the entrance to the greenhouse. Do i look at the 0.60 specific gravity / .30" w.c. pressure drop chart for the gas pipe sizing after that? What im trying to say, is my piping going to be smaller because i have 5 psi going into the pressure regulator? or it doesn't matter because the modine unit heater could only handle 0.25 psi 7" w.c. Or could I install a indoor pressure regulator by the modine unit heater? I personally wanted to install the pressure regulator outside in case if something ever goes wrong with it. And the environment is high humidity. If you could How close could you install the pressure regulator to the modine unit heater. It is 10 feet above the ground. Any help or info will be greatly appreciated