Importance Of Using NPT Fitting

The National Plumbing Code (NPC) is an organization of the American Society of Plastic Engineers and is responsible for making sure that the plumbing codes in the United States are strictly followed. This is because the rules set forth by the NPC provide contractors with a reference to ensure that they are following good practice when carrying out work within their structure. As stated before, these codes regulate many aspects of plumbing which includes NPT fitting. NPT fitting is essential as it is a way of ensuring that pipes within an organization are running according to code. So, what is NPT fitting?


NPT is a two-piece threaded pipe fitting that accommodates at least one and sometimes two copper threads. When these two copper threads are pushed together, a compression seal is created. The innermost two threads on the two fittings are referred to as the 'outside threads'. When the two fittings are pushed together tightly, a 'threaded ring' protrudes.


This taper is what creates the compression seal. When the threads are pushed together tightly, a taper is formed. This taper is what changes the diameter of the innermost of the two copper threads to that of the outer diameter. In turn, the outer diameter of the thread becomes the diameter of the pipe. The resulting product is a npt fitting.


An important factor to note when considering npt fittings is that the two copper threads need to be of the same length. If they are not, then the inner diameter of the threaded pipe will become smaller than the outer diameter. When the threads are of the same length, the inner diameter of the pipe is larger than that of the outer diameter.


To determine the right npt fittings, you need to understand the difference between tolerance range. Tolerance is the difference between the inner diameter of the pipe that the threads are seated on and the actual diameter of the pipe when the threads are seated. On the other hand, tolerance range is the difference between the inner diameter of the pipe and the maximum pressure that the pipe can withstand. It is the tolerance of the threads to the actual diameter of the pipe. The best way to compare the tolerance is to determine the tolerance of the threads to the pressures that the pipe can handle without slipping.


The majority of the manufacturers provide the threaded nut fittings in metric units. Therefore, when you buy these products, you should ensure that you buy them in the correct metric units. Alternatively, if you are not sure whether you are buying the right units, you can request for a sample. NPT manufacturers who offer the products in both units are more likely to provide the right products.


Threaded fittings allow the flow of pressurized fluids to pass through the pipe thread, without the end of the pipe being damaged. There are different types of threaded npt fitting available. The most common type is the half-inch thread, which is one-eighth-inch in diameter. The other types include the full-inch spindle, which have a half-inch threads; half-inch wrench threads; 12-inch wrench threads; and the 24-inch wrench threads. These varying types of threads to ensure that the flow of the fluid through the pipe is smooth and consistent.


NPT fitting also allow you to attach a fire hose coupling to your systems. This component attaches to the top end of the pipes or to the connection point of a fire hydrant. Some of the companies also provide fitting for connection of water mains. You should ensure that the company you choose offers the right service for your needs so that you get the best from the new fittings.