WebThick-Wall Plastic Pipe Fittings for Water. Connect these fittings to thick-wall plastic pipe— they have thicker, stronger walls than standard-wall fittings, so they can handle heavy … WebSep 6, 2024 · Dope on course threaded pipe, galv, black pipe etc. Also on larger diameter pipes and always special oil resist dope on fuel. oil and gas (propane,natural gas) pipes. Tape on small 1/2 and 3/4 inch tubing and plastic fittings. Tape is almost always used on most small brass fittings for water and air. Never use dope on plastics, strictly tape.
Corrosion concern between brass ball valve and galvanized steel pipe
WebFeb 3, 2024 · Since brass doesn’t react with either the copper or the zinc, one method is to make sure you have a threaded female end on both the copper and the steel pipes, and then connect the two by simply inserting a short threaded brass nipple between them.The second method is to use a special transition fitting called a dielectric union. WebJan 4, 2024 · Feb 20, 2016. #2. It is not nearly as bad as screwing galvanized into brass or Stainless. But almost any dissimilar metals can cause electrolysis. I have not seen a problem, but the only brass I have had screwed into Stainless for any length of time is the old leaded brass. So I guess time will have to answer that one. old town glen waverley menu
Galvanized compression fittings aka dresser fittings - PlumbingSupply.com
WebSep 1, 2006 · Mr. Pelikan's article, “Submersible Pump Accessories” (July, 2006), recommends using no-lead brass, stainless steel or galvanized steel pipe couplings and check valves on galvanized steel drop pipe. Both brass (leaded or lead-free) and stainless couplings and check valves create a dissimilar metal connection that will lead to … WebThe zinc coating of hot-dipped galvanized steel will last in the harshest soil is 35 to 50 years and in less corrosive soil 75 years or more. Although humidity affects corrosion, … WebDec 5, 2024 · Brass is a copper/zinc alloy, so a brass nipple qualifies as a type of “copper alloy fitting” that is cited as acceptable by the code. While a dielectric union (shown above) provides a break in electrical conductivity that theoretically would be best, most plumbers prefer a brass fitting. "In my experience they are better than dielectic ... old town goleta ca