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Yes, it is still a pipe thread. The pipe dope is there to fill in the gaps in the thread. It is impossible to machine the treads close enough in pipe to not need something in the threads to make a seal.
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∙ 13y ago
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Do you need pipe dope to connect brass pipe to copper pipe?
NO but you will need some type of sealent OR braze or soldering
Is pipe dope used in joining copper unions?
No pipe dope is to be used on the brass seats they will seat dry.
Can you solder threaded copper to brass fittings?
Any pipe dope will work but Teflon tape is a lot cleaner.
Can you use teflon pipe dope on PVC pipe when connecting to cast iron?
If you are screwing in -- yes -- If not -- you do not use pipe dope
Can you connect chromed steel pipe directly to copper or do you need a brass fitting between?
In order to connect a chromed steel pipe to a copper pipe, you will need a brass fitting. These two pipes will not fit into each other otherwise.
When joining steel pipe use what?
pipe dope and teflon tape
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.
Is it okay to connect copper pipe to brass to galvanized to brass and back to copper or will it cause a reaction that will corrode the pipes?
If you do connect copper pipe to galvanized pipe, you will need a dielectric coupling or else the galvanized pipe will corrode. Same with connecting galvanized pipe to brass fittings. Brass is an alloy that contains copper and therefore the same electrolytic properties will exist unless a dielectric coupling is used. Hope that helps you out.
Do you use pipe dope on compression ring fittings?
no
In a steel pipe fitted with brass tap which metal will get corroded?
If a steel pipe is fitted with a brass tap, it is the brass tap that will get corroded.
What is the best thread dressing for galvanized to PVC pipe joints?
Pipe dope and/or teflon tape
What is the purpose for plumbing pipe dope?
Joint compound AKA dope is used as a lubricant and to seal minor imperfections of the threads
