Transitional Plumbing Fittings for Residential Use

Transitional plumbing fittings create an easy way for the homeowner to connect different types of pipes made of different materials. PVC, copper, even galvanized iron can be connected to one another with the use of the proper fitting. However, it is essential that not only you choose the right transitional plumbing fitting for the job but you know how to install it properly.

Copper to galvanized iron

Connecting galvanized iron to copper requires dielectric union transitional plumbing fittings. To install a dielectric union, begin by screwing the threaded end to the galvanized iron pipe. You should then be able to fit the copper pipe in the other end of the dielectric union and solder the copper pipe into place. Another important feature of these particular transitional plumbing fittings is the plastic piece between the two parts that prevents the two different metals from reacting with one another and causing corrosion.

PVC to galvanized iron or threaded metal

Transitional plumbing fittings called threaded adapters are best when you are connecting some type of threaded metal pipe with PVC. A threaded adapter is made of PVC and should be joined to the end of the PVC pipe using a solvent. When the adapter is firmly attached to the PVC, the threads of the metal pipe should be covered with plumber’s tape and then screwed into place for a watertight seal.

PVC to Copper

A PVC to copper transition requires grip fittings. Grip fittings are made of metal with a rubber O-ring in each end. The ends of the pipe are put in the grip fitting and then screwed down into place. The rubber O-ring tightens around the pipe, creating the seal.

PVC to a Hot Water Heater Pipe

A hot water heater pipe can be tricky to connect to a PVC pipe. The different rates of expansion and contraction of the two different metals require hot water transition fittings. Hot water transitional fittings are installed by using a solvent to attach to the PVC. Then plumber’s tape is put over the threads of the metal pipe and the hot water transitional fitting is screwed into place.

Water Pipe to Supply Tube

Any time you join a water pipe to a supply tube a shutoff valve should be used. These transitional plumbing fittings are invaluable not only for joining the plumbing together but also provide an easy way to turn off the water to a leaky faucet or appliance.

PVC to Cast Iron

Transitional plumbing fittings for PVC to cast iron are made of rubber. These fittings are put over both ends of the pipe and then banded couplings are tightened. These banded couplings when combined with the rubber sleeve create a watertight seal.

Knowing how to use transitional plumbing fittings is an essential skill if you want to do most plumbing repairs in your home. Transitional plumbing fittings are most often found in older homes that have had multiple plumbing repairs, although some fittings such as shutoff valves are found in every house.