In order to construct a pipeline, it is necessary to connect pipe sections and other fluid control products such as valves and pumps together. Pipe fittings are required for the construction of pipelines because they connect the sections of pipe that have been joined together. As far as fittings are concerned, the term is most frequently associated with metal and plastic pipes that are used to transport fluids, which is the most common connotation of the term. In situations where a leak-proof connection is not required, other types of pipe fittings can be used to connect pipes for handrails and other architectural elements, for example. To name a few of the most common mechanisms for joining pipe fittings, welded or threaded connections, mechanically joined connections, and chemically adhered connections are all examples of common methods. In this case, the material of the pipe that is being joined determines the joining mechanism that will be used.
The terms "pipe," "tube," and "tubing" are all used interchangeably, but the terminology that surrounds them is not always clear or consistent. Therefore, when discussing pipe fittings, the term pipe fittings is sometimes used to refer to both tubing and pipe at the same time, which is a grammatical error. Pipe fittings are similar in shape to tube fittings, but they are rarely joined together using traditional methods such as soldering or welding, despite the fact that they have the same shape. Some methods are similar, such as the use of compression fittings, but where compression fittings are commonly used to connect tubes or tubing, their use in pipe connections is less common, as is the use of flanges. Flanges are also less common in pipe connections than compression fittings. Flanges are also less common in pipe connections than compression fittings, which is another advantage of using flanges. Note that while there are some general distinctions to be made, the common usage of terms can differ from one supplier to another, even when the items in question are identical.
The majority of this article will focus on rigid weld neck pipe flanges and pipe fittings, but there will be a brief discussion of the fittings and connection methods used with flexible tubes, tubing, and hose at the end of the article.
Introduction to Pipe Fittings: Materials and Manufacturing Processes for Pipe Fittings (Explanation) Introduction to pipe flange Fittings: Materials and Manufacturing Processes for Pipe Fittings
Both hubless and bell-and-spigot fittings for cast iron pipe can be used with this material, and they are both available in different sizes and shapes. Clamps, typically stainless steel band clamps, are used to secure elastomeric couplers to the outer diameters of a pipe or fitting when they are attached to the pipe or fitting. It is preferable to use hubless designs because the compression of the elastomeric material creates a seal, which is why they are preferred. Some rubber pipe couplings and rubber plumbing couplings have hubless or no hub designs, which are referred to as no hub designs. When transitioning from one material to another, such as from copper to cast iron, they are particularly popular, as are they when transferring large amounts of torque. Bell-and-spigot fittings, also known as hub-and-spigot fittings, are typically joined today by elastomeric gaskets that fit inside the bell and allow for the introduction of a plain Slip on pipe flanges end or fitting after the bell has been installed, as opposed to the past. Prior to the 1950s, older systems were caulked and sealed with a mixture of molten lead and a fibrous material such as oakum. threaded pipe flange also served as a sealant because of the composition of the mixture. Bolted flanges are occasionally used to join cast iron pipe pieces together, and mechanical compression connections are also used to join the pieces together in some instances. Because flanged joints can cause settlement stresses in when used in underground applications, it is important to ensure that the pipe is properly supported by the ground.
As a result, while both malleable and ductile iron pipe fittings are commercially available, the improved mechanical properties and lower cost of ductile iron are leading to a shift away from the use of malleable iron pipe fittings and toward the use of ductile iron fittings.
In both residential and commercial plumbing projects, steel pipes (also known as black pipe) and galvanized pipes are connected together with moldable iron fittings. Moldable iron fittings, also known as malleable iron fittings, are cast iron fittings that can be shaped to fit a variety of applications and environments. These materials have the ability to be galvanized, which makes them useful. Threaded fittings are listed in standards for pipe diameters up to a certain point, but they are rarely used today because it is believed that threading large-diameter pipe is an unnecessarily difficult task.