If you are a DIY homeowner, you probably want to be ready for any sort of repair situation. Here are all of the things you could purchase from a plumbing supply store and stash away in your tool or supply box for DIY plumbing needs.
If you have any metal pipes in your home, you will, at some point, need a plumber's wrench. This heavy duty wrench acts as a very powerful and versatile plumbing tool to unscrew even the most corroded, rusted, or lime- and calcium-encrusted pipes. You may even want to add a couple of plumber's wrenches in different sizes to your tool box just to be sure you have what you need. Otherwise, take measurements of all of your metal pipes and then buy plumber's wrenches that fit the diameters of those pipes.
Replacement pipes for those that burst or leak are a good buy too. Just make sure you have the correct diameter measurements for all of the pipes in your home. There is no need to buy pipes that do not and would not fit in all the places where you might need to replace pipes in the future. Also, do not forget to purchase replacement "traps," the u-shaped pipes used under sinks, showers, and tubs for the control of sewer gases and larger bits of debris. Buy metal pipes and traps to replace current metal plumbing and PVC pipes to replace your current plastic pipes and plumbing.
Couplers are the round screw-on components that connect one section of pipe to another. While it is good to have some extras of these lying around, you do have to make sure they are the correct diameter and material too. Take a look at the pipes under your sinks and under your tub and shower in the basement. This will give you a good idea of the sizes and material types of couplers you will need for any future DIY plumbing tasks.
Augers may not fix pipes and plumbing per se, but they do fix problems within the pipes, like blockages. If you do not have a sink or toilet auger in your tool box yet, you will definitely want to pick these up. They are invaluable to every homeowner because clogged drains and clogged toilets are an inevitable part of modern plumbing.
For questions about these supplies or other suggestions for plumbing tools you should have on hand, talk to a supplier like Kelly's Pipe & Supply Company.