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Difference between Pipe Nipple and Pipe Coupling


Understanding piping works and its functions is not an easy task! There are a lot of basic things and requirements which a person need to fulfill to get a complete grasp of this field.
Let’s take an example of pipe fittings and basic differences between each. Usually, people assume that there is not much difference between pipe nipple and coupling. In other words, they don’t count the minor differences between both as they found both usable in pipe fittings, and plumbing works. They may have a point in terms of general use, but technically, there is a great difference between both.
However, we have collected some best points about both pipe nipple and couplings, by reading which you’ll learn the how they distinguish from each other.

Major Differences between Pipe Nipple & Pipe Couplings


Pipe Coupling

Pipe coupling is referred to as a short length of pipe or tube with a socket connected at one end and sometimes at both ends which helps to connect two pipes or tubes. Welded (like steel), brazed, or soldered (like copper & brass) together.
A pipe coupling is a kind of pipe fitting which is used to connect two or more pipes together to retain their continuity or resistance for a long time. You can reduce pipe couplings into internal diameter if going to use it for different pipe sizes; whether it is T shape, cross-shaped – to join more than two pipes, or in angle shape for making bends.
These joints if connected or installed rightly, then it can offer an excellent rigidity and sealing characteristics without any change in material and functioning of pipes. I will suggest you prefer flexible pipe coupling over other due to its following benefits;
·         Easy installation
·         Versatility
·         Special eccentric designs
·         Chemical resistance
·         Made with leak-proof technology

Pipe Nipple

Pipe nipple is a most popular category of pipe fitting. It is a straight pipe with male threads on both ends. This kind of fitting enables plumbing to be connected to a water heater or other plumbing.
The pipe nipples are usually recommended for discharging low-pressure liquids, or for suction service of various compatible liquids, but it is not applicable to use for nitrogen, air, or steam.
The length of this pipe fitting is typically determined by the general length with threads. It might have a hexagonal segment in the middle for torque to get a handle on (It can also be referred as “hex nipple” or it might also be made from a short piece of pipe (also known as barrel or pipe nipple).
A “close nipple” has no unthreaded region; when screwed firmly between two female fittings, almost no of the areola stays uncovered.

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