What makes a fitting a compression fitting

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What are compression fittings? How are they used? How does compression fitting work? Any tips when using these things? Plumbing Emergency? It is important to make sure that the pipe is cut square with any burrs removed and to remember to place the nut, then the olive, over the pipe before final assembly.

For larger sizes of metal pipes, it is beneficial to lightly oil the pipe, olive and compression nut before tightening the joint. Slacken off the assembly and ensure that the groove made by the olive is even. Release the nut, then re-tighten and give an extra quarter turn. As with all system designs, piping and fittings should be selected to allow the necessary flow without undue pressure drop; all necessary fitting shapes should be available from the range for a particular application.

Other important considerations are:. Often people wrap PTFE round a compression fitting olive to make sure of a water tight seal. Related Articles. How to fix a leaking compression pipe fitting. How to use PVC compression waste pipe fittings. How to change your kitchen sink - step by step. Feed and expansion tanks. Pressure reducing valves. The pipe is slid into the fitting in this case a toilet shutoff valve and the nut is tightened down. As the nut is tightened, the compression ring is pressed into the seat, causing it to compress against the pipe and the compression nut, providing a watertight connection.

Usually, that is. Though the primary advantage of compression fittings may seem to be in their ease of assembly, their real advantage is in their ease of disassembly! If you look throughout your home, you will see that the use of compression fittings is generally limited to appliances and fixtures that will Look under your bathroom vanities, behind your toilets, under your dishwasher or behind your refrigerator In fact, the now ubiquitous use of compression fittings in homes conveniently corresponds with the advent of do-it-yourself , user-friendly fixtures and appliances.

After all, if you want to sell faucets to folks with limited skills, you want to make their installation as painless as possible. Ergo, compression fittings! But compression fittings have a dark side, and may leak if not used properly. Here are my rules for the use of compression fittings. If you don't follow them, you may regret it! If you look critically at compression fittings, one thing is apparent However, they do a poor job preventing the pipe from turning within the fitting. To visualize this, take the example of the connection for a refrigerator icemaker.