The only exception to these rules would be if the contractor is making a repair to an existing 2.5” or 3” sprinkler main that was previously hooked up to a 2” water tap connection. Example: A 3” ductile iron pipe would require a 3” wet connection to be connected to the city main. In most cases when installing a new 3” ductile iron sprinkler service or larger, you will be required to install a wet connection of equal size to the pipe unless approved plans state otherwise. ![]() If you are installing a brand new water main service and tap connection, the tap must be the same size as the pipe. In this case you would be grandfathered into using the 2” tap.ĮX 1: if you are replacing an existing 2.5” or 3” water main that has a 2” tap, you can reconnect the new 3” water main to the existing tap. If the new water main is larger than three inches, the tap connection must be the same size as the pipe unless, the existing 3” water main was connected to a 2” tap. EX: A new 1” water main can be connected to an existing 5/8” or a new 3/4” tap connection. The water tap connection must always be smaller than the new pipe being installed when dealing with a domestic water main. It is common to find smaller taps in older houses which are required to be replaced as per the city plumbing code. If you are installing a new tap connection, the minimum size the DEP will install is ¾”. The smallest size water line connection allowed for a water main in the five boroughs is 5/8”. What size water tap connection does your home require? A wet connection is installed by the DEP by core drilling a hole in the city main where the new wet connection is going to be installed. The DEP drills a tap into the city water main which is different than a wet connection.Ī wet connection is used when the new water line is three inches or greater. A new tap installation may range from ¾” to 2”. ![]() Tap sizes vary based on the size of the new water main being installed. If a plumber comes across a driven tap when replacing a water main, he is required to contact DEP for a new tap installation.Ī wet tap is used to connect a domestic water main no larger than two inches. It is common for a driven tap to get clogged or malfunction, and for this reason they are no longer legal throughout NYC. In many cases, increasing the size of a tap will improve upon the amounts of water pressure in your home.Ī driven water main tap is an old type of connection that was installed before power tools were used for installations and were installed by hand. A water tap connection controls the volume and pressure of water from the city main to the house. The tap allows a homeowner to install a new water main without having to affect any of the neighbors. ![]() A water main tap is the valve used to connect a homeowner’s water line to the city water main.
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