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There is NO coupling there is however a nipple or union to prevent electrolytic action from taking place between ferrous and non ferrous metals

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16y ago

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How do you connect t0 threaded brass for water plumbing?

Left and right nipple and coupling / union / TP coupling


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.


What is the purpose of a dresser coupling for galvanized pipe in plumbing systems?

A dresser coupling for galvanized pipe in plumbing systems is used to connect two pipes together securely and prevent leaks. It provides a tight seal and helps maintain the integrity of the plumbing system.


Is there a 4 in. by 2 in PVC reducing coupling?

Yes, a 4-inch by 2-inch PVC reducing coupling is available and commonly used in plumbing and drainage applications. This fitting allows for a transition between a larger 4-inch pipe and a smaller 2-inch pipe, facilitating connections in various systems. It's important to ensure compatibility with the specific types of PVC pipes being used. Always check local plumbing codes and standards when selecting fittings.


Can you connect directly DZR brass ball valve with black steel pipe for chilled water without using dielectric coupling. The valve is internal threaded connection?

Connecting a DZR ( dezincification resistant) brass ball valve directly to black steel pipe without a dielectric coupling is not recommended for chilled water applications. The dissimilar metals can lead to galvanic corrosion, potentially compromising the integrity of the connection over time. To ensure longevity and prevent corrosion, it's best to use a dielectric coupling or another form of isolation between the brass valve and the steel pipe.


What is the purpose of using plumbing pipe dope and how does it help in sealing and lubricating threaded connections in plumbing systems?

Plumbing pipe dope is used to seal and lubricate threaded connections in plumbing systems. It helps create a tight seal to prevent leaks and also makes it easier to tighten and loosen connections. The purpose of using pipe dope is to ensure a secure and leak-free connection in plumbing systems.


What are the benefits of using a cast iron coupling in plumbing systems?

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How can you connect a cut galvanized pipe without threads and a PVC pipe?

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What has the author Marvin T Skodje written?

Marvin T Skodje has written: 'Water supply and plumbing cross-connections' -- subject(s): Cross-connections (Plumbing), Pollution, Water


Does Teflon tape effectively prevent leaks in plumbing connections?

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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.


Stop leak on victaqulic pipe coupling under pressure?

don't do it, call a professional plumbing/mechanical contractor to fix it properly.