Different types of pipe joints are used to connect multiple water pipes and withstand pressure. These include threaded joints which connect pipes by screwing threads together, brazed joints which use molten filler above 840°C, and soldered joints which use filler below 840°C to join copper pipes. Other joint types are welded (butt and socket), flanged which connect plain or threaded pipes with bolts to prevent leaks, and grooved joints which connect grooved pipe ends with a seal and coupling. Each type is suited for different applications in water supply systems.

1. Different Types of Pipe Joints in Water
Supply
Types of pipe joints are major components of
water supply system provided to connect
multiple pipes. Pipe joint provided should
withstand pressure of each pipe.

2. Types of Pipe Joints in Water Supply
• Different types of pipe joints used in water supply
system are as follows.
• Threaded joint
• Brazed joint
• Soldered joint
• Welded joint (butt welded, socket welded)
• Flanged joint
• Compression joint
• Grooved joint

3. Threaded Joint in Pipe
• Threaded joint means, pipes are connected by
screwing with the help of threads provided for
each pipe. One pipe having internal threads
and the other one having threads externally.

4. Brazed Joint in Pipe
• Brazing is the process of jointing pipes using
molten filler material at above 840oC. Brazing
is generally used for joining copper pipes or
copper alloy pipes.

5. Soldered Joint in Pipe
• Soldering is also similar to brazing but the only
difference is in case of soldering the filler
metal melts at below 840oC. Soldering also
used to joint copper and copper alloy pipes.

6. Butt Welded Joint in Pipe
 When the pipes are of same diameter butt welding is to done
to join the pipes. It is the most common type of welding.
Skilled workers are required to install the joint. These joints
are generally used for large commercials and industrial piping
systems.
 The joints are fixed and do not opened for maintenance
purposes. External smoothing of welded portion will give good
appearance to the piping system.

7. Socket Welded Joint in Pipe
• Socket welded joints are used wherever there
is a high chance of leakage in joints. Pipes are
connected as putting one into other as shown
below and welded around the joint.

8. Flanged Joint in Pipe
Flanged joints are used for high pressure flows
and for large diameter pipes. In general they
are used for plain end pipes or threaded
pipes. Two flange components are connected
by bolts at the pipe joint to prevent leakage.

9. Grooved Joint in Pipe
In case of grooved joint, the pipe ends consist
grooved edges which are connected by
elastomer seal and then ductile iron made
grooved couplings are used as lock for
elastomer seal.