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Can you screw a copperfitting into a cast iron pipe without a dielectric union?
Wiki User
∙ 15y ago
Of course NOT A Problem as electrolytic action most of the times happen between piping that contains galvanized coating (Zinc)
Cast Iron radiators for example have BRASS valves which can contain as much as 85% copper
If one looked at the clean outs of cast iron piping the CO's are brass with never any adverse actions
Wiki User
∙ 15y ago
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Can you join brass with steel without dielectric union?
Yes
Can copper dwv attach to a cast iron drain system without a dielectric union?
yes. A no-hub coupling or FERNCO (brand name) coupling work well.
Can you join copper and cast iron without a dielectric union?
Indirectly yes. Rivetting, plating, adhesive bonding, but joining these materials could lead to corrosion in wet conditions.
What is the name of the fitting used to connect the water lines to the water heater?
Dielectric union
Can a 2.5 galvanized dielectric union be used to connect black pipe to copper pipe?
Yes
Why Using a dielectric union to join galvanized and copper water supply pipes?
Dissimilar metals in contact to each other cause a Galvanic Reaction resulting in one or both metals corroding and causing a leak. A Dielectric Union separates the two metals by uses of rubber and/or plastic thus preventing a Galvanic Reaction. Also in most Plumbing Codes, you can use a Brass fitting in place of a dielectric union as Brass does not react with Copper or Steel Piping (Galvanize Piping).
Why were the purges of 1935 held in the soviet union?
Because screw you dats why
What do you need to connect copper to galvanized pipe?
Yes. Use a threaded fitting, male or female as needed on the copper and screw the galvanized into it.You must use a dielectric fitting to connect copper to galvanized pipe. If you don't, a galvanic reaction will occur and the piping will corrode and leak. You can use a Dielectric Union or a Threaded Brass fitting to join the two types of piping together.UNIONS can leak the best answer would have been a dielectric nipple
Can you connect a copper fitting into a cast iron pipe without a dielectric union?
Certainly, if the pipes are kept dry, and don't carry an electrolyte, such as water.Otherwise, it's a bad idea to directly connect different metallic pipes. In fact, most plumbing codes prohibit such a connection.That's because anytime any two dissimilar metals contact each other -- while in the presence of an electrolyte -- whichever metal has the higher electropotential will corrode, through electrolytic action.So, in the case of copper vs iron, the copper side of the joint will eventually fail due to corrosion -- unless you electrically isolate the two metals.You can do this via a dielectric union, or dielectric nipple. Or, you can use a hardened brass fitting, which resists corrosion and also smooths the dielectric potential between the copper and steel.Of course, another author may have a different opinion (like the one below.) So my advice is to understand the 'why' of electrolytic corrosion, so you can determine whether or not, in your case, a dielectric union is advisable.####Of course , NO Problem and there are many ,many options of doing so.The electrolytic conditions happens when connecting ferrous metals to non ferrous metals that contain zinc (galvanized) if you think about it EVERY SINGLE CAST IRON RADIATOR has a brass shut off valve, Most black steel gas line have a BRASS gas valve. Brass bolts are the best way to go when installing CAST IRON ROOF DRAINSAlso why use a dielectric union when there are dielectric nipples less chance of leakage
Do need to use dielectric union when you have black pipe to brass fitting?
Brass and steel are compatible, Otherwise we could NOT use brass valves with steel piping.
What is a dielectric coupling for plumbing connections?
There is NO coupling there is however a nipple or union to prevent electrolytic action from taking place between ferrous and non ferrous metals
Can you put copper piping to galvanized piping?
Yes, this happens quite often in older houses, copper pipe can be threaded; thus one can join them and there are several fittings that can be utilized.On the other hand, copper tubing (K, L, M, and DWV) can be joined depending on which of the following application method is used:For copper tubing to galvanized water supply, one would use a dielectric nipple or union to prevent electrolytic action from taking place or dezincification of the galvanizing pipe.If these lines are for waste or venting, the Mission Rubber Company LLC has various types of couplings that can go from tubing OD to pipe OD without the dangers of mixing ferrous and nonferrous metals .For copper tubing to IPS you can solder, braze a male adapter and use the dielectric union, use a copper x galvanized dielectric union, or copper by female adapter and a dielectric nipple .If your connecting to a Durham system and the galvanized pipe has a Tucker coupling or a Kennedy tee wye, then you can use lead and oakum without the fear of mixing dissimilar metals as the lead is nonferrous metal but has no adverse effect with galvanized or copper pipes.
