Types of Pipe Fittings in Plumbing System for Different Purposes

Mike Mahajan
9 min readFeb 21, 2023

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Types of Pipe Fittings in Plumbing System for Different Purposes

What Is Pipe Fittings?

Pipe fitting is the process of connecting various pipes and tubes to form a fluid-carrying system. It involves selecting, cutting, and connecting pipes and fittings to meet the desired specifications and requirements of a piping system, such as flow rate, pressure, and temperature.

The fittings can be elbows, tees, reducers, flanges, valves, and other components that are used to control the direction, distribution, and regulation of the fluid being transported.

Types of Pipe Fittings Names and Pictures

Following are different plumbing fitting types,

1. Adaptor

16 Plumbing Fittings Types With Their Application & Pictures

the adaptor in pipe fittings

Adaptors are mainly used for extending pipe runs in the forward direction with the same or different diameters. By using an adapter we can connect two dissimilar pipes in the same run.

Adaptors’ function is generally similar to pipe couplings, with the difference that they connect pipes of different types, one of which is an IPS (Iron Pipe Size).

It may have female or male IPS or threads on one end of the opposite gender on the other end, which needs to be welded or soldered onto a smaller pipe. Adapters can be used for various utilities, but they are typically used to connect different pipes to fixtures.

2. Barb

16 Plumbing Fittings Types With Their Application & Pictures

Barb

A barb is generally used to connect hoses to pipes.

It is essential to have a male at one end and on the other end a barbed tube, which is a ridged and tapered cone.

Plastic barbs are used when it needs to carry cold water and brass if they carry hot water.

3. Coupling

16 Plumbing Fittings Types With Their Application & Pictures

Coupling in Pipe Fittings

It is mainly used to connect two piles of the same diameter. Couplings can also be used to fix pile leakage or broken problem.

Couplings have two main types named compression coupling and slip coupling. Compression coupling is mostly used to connect two pipes and it is able to prevent leakage by the arrangement of gaskets or rubber seals on both sides, otherwise, glue is provided.

Slip coupling has two pipes that are arranged as one another. It is made up such that the inner pipe can slide up to some length. So, we can solve the problem of long-length damaged pipe by slip coupling.

Plumbing Fittings Types

Read More: Plumbing Valves and Types of Plumbing Valves

4. Cross-type

16 Plumbing Fittings Types With Their Application & Pictures

Cross-Type in Pipe Fittings

Cross-type pipe fitting has 4 vents or openings in all 4 directions and there are perpendicular to each other. This type of fitting is used when there are 4 pipes that are meeting at the same point.

These types of pipe fitting must be made from strong material as it has to bear more stress. These stresses come from the point where all 4 pipes connect from different directions. These types of pipe fitting are majorly used in the sprinkler system.

5. Double-Tapped Bushing

16 Plumbing Fittings Types With Their Application & Pictures

Double Tapped Bushing

The double-tapped bushing is one type of nipple itself, but it has to thread on both the inside and the outside.

It is named double-tapped bushing because its center hole is threaded (tapped) from both the top and bottom.

It has only a female end. (Types of Pipe Fittings)

6. Elbow

16 Plumbing Fittings Types With Their Application & Pictures

Elbows in Pipe Fittings

It is generally used to change the direction of the pipe run. Elbows are available at different angles 22.5º 45 º and 90 º.

Normal types of elbows are used for a pipe of the same diameter and reducer types of elbows are used when diversion is to be done for a pipe of different diameters.

They are made from different materials. Elbows are mostly available with female threads and we can fix them by butt or socket welding also.

7. Mechanical Sleeve

16 Plumbing Fittings Types With Their Application & Pictures

Mechanical Sleeve

Mechanical pipe sleeves are generally used to connect two pipes by a screw or other fixtures. This arrangement makes it easy to fix and repair.

The mechanical sleeves are mostly manufactured from a rubber material that is inserted inside a metal jacket (stainless steel clamp).

As we tighten the mechanical sleeves claim, it compresses the rubber inside to make a tight seal. (Types of Pipe Fittings)

8. Nipple

16 Plumbing Fittings Types With Their Application & Pictures

Nipple in Pipe Fittings

It is the most useful pipe fixture in the plumbing system. The nipple is not connected to two pipes, but it connects two pipe fittings together.

It is a small pipe fitting that can be made of metals such as copper, brass, steel, or chlorinated polyvinyl chloride (CPVC).

A nipple with continuous threading, then it is called a closed nipple. The nipple is available in males and comes in varying lengths.

9. Reducer

16 Plumbing Fittings Types With Their Application & Pictures

Reducer in Pipe Fittings

The fitting used to make a larger flow area smaller is called a reducer. It has two types one is a concentric reducer that joins two pipes on the same axis, and the eccentric reducer is used to join pipes of different diameters.

The concentric reducer mostly has a cone shape while eccentric reducers look somewhat like bells with offset center lines. They prevent air bubbles in the pipes. (Types of Pipe Fittings)

10. Tee

16 Plumbing Fittings Types With Their Application & Pictures

Tee in Pipe Fittings

It is shaped like the letter “T.” it has an inlet and outlet. Tees are available in different sizes and are considered sturdier than the cross fitting.

A diverter type of Tee is used in heating systems that use water. These Tees have directional markings and need to be installed correctly for the system to operate.

11. Union

16 Plumbing Fittings Types With Their Application & Pictures

Union in Pipe Fittings

It can have both male and female threads. Union is somehow similar to couplings, but the difference is unions are easy to remove making them convenient for maintenance or a planned future replacement.

A coupling nature is more permanent and needs to be cut out.

Generally, it has three parts: nut, male end, and female end. It is mainly utilized to join the male and female ends.

12. Valve

16 Plumbing Fittings Types With Their Application & Pictures

Valves in Pipe Fittings

Valves allow mainly used to regular or stop the flow of fluid in a pipe. There are various types of valves such as throttling, non-return, and isolation. Non-return valves only allow the liquid to flow in one direction and are often found in drains. They’re also called check valves.

Isolation valves are an important part of the plumbing system so that the system can be serviced or maintained.

These valves have the nature of being left open or left closed all the time. However, they are mostly used in an emergency, they should be checked now and then to see if they’re operational.

Throttling valves are likely used to control the pressure and amount of fluid. Because this valve experiences the stresses mechanism, they tend to wear out faster than other valves. Generally, these types of valves are installed near isolation valves.

13. Wye

16 Plumbing Fittings Types With Their Application & Pictures

Wye in Pipe Fittings

Wyes type of pipe fitting resembles the letter “Y,” this fitting is made to connect three pipes.

Wye fittings permit the pipes to change their elevations and branch out into freshwater lines or drains.

Wyes fittings are somehow similar to Tee but the smoother angling reduces friction and turbulence in the water. It is mainly used to connect a vertical drain pipe to a horizontal one.

14. Cap

16 Plumbing Fittings Types With Their Application & Pictures

Caps in Pipe Fittings

It has almost a similar utility to a plug.

But the main difference is that the plug contains male threads and the cap contains female threads which are screws on the male thread of the pipe.

They are manufactured from different materials like rubber, copper, steel, plastic, etc.

15. Olet

16 Plumbing Fittings Types With Their Application & Pictures

Olets in Pipe Fittings

Olets types of pipe fitting are generally utilized where there are standard sizes of fittings that are not suitable for our requirements. If there is inlet pipe size is larger compared to outlet pipes in t-sections then also Olets are used.

There are different types of lots available. Some important types of lots are:

- Butt-Weldolet

- Socket weld Olet

- Threaded outlet

- Elbow olet

16. Plug

16 Plumbing Fittings Types With Their Application & Pictures

PVC Plug

The plug is one of the most important accessories of a plumbing system which is generally used to close pipe openings during inspections and repairs.

Plug most have male threads.

Conclusion

In conclusion, pipe fitting is an important aspect of any plumbing system as it ensures the proper flow and distribution of liquids and gases.

There are several types of pipe fittings available, each with specific functions, such as changing the direction of a pipe, connecting pipes together, reducing the diameter of a pipe, and closing off the end of a pipe.

When choosing the right pipe fittings for a plumbing system, it is important to consider factors such as the size and type of pipes, the pressure, temperature, and fluid type, and the overall design of the plumbing system.

Proper selection and installation of pipe fittings can ensure the longevity, efficiency, and safety of a plumbing system.

FAQs:

What are the Types of Pipe Fittings?Piping fittings types are as follows:
1. Adaptor
2. Barb
3. Coupling
4. Cross
5. Double Tapped Bushing
6. Elbow
7. Mechanical Sleeve
8. Nipple
9. Reducer
10. Tee
11. Union
12. Valve
13. Wye
14. Cap
15. Outlet
16. PlugHow do you connect two pipes together?Two pipes are connected together by using plumbing or piping fittings. Pipes of the same or different sizes are fitted together through the use of piping fittings such as Adaptor, Barb, Coupling, etc.Types of Plumbing FittingsPlumbing fitting types are as follows,
1. Adaptor
2. Barb
3. Coupling
4. Cross
5. Double Tapped Bushing
6. Elbow
7. Mechanical Sleeve
8. Nipple
9. Reducer
10. TeeWhat is an elbow pipe fitting used for?An elbow pipe fitting is used to change the direction of a pipe. They come in different angles such as 45 degrees, 90 degrees, and 180 degrees.What is a coupling pipe fitting used for?A coupling pipe fitting is used to connect two pipes together.What is a union pipe fitting used for?A union pipe fitting is used to connect two pipes and allows for easy disassembly without cutting the pipes.What material are pipe fittings typically made of?Pipe fittings are typically made of metal materials such as copper, iron, brass, and stainless steel. Some plastic pipe fittings are also available.

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Mike Mahajan
Mike Mahajan

Written by Mike Mahajan

Bhushan Mahajan who himself is a Civil Engineer by profession is also the main author and maintains the civiconcepts.com website himself.

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