Pipe Stopper Testing Mistakes

In order to use a smooth flowing pipeline, we have to carry out a few tests with pipe stopper (a.k.a. pipe plug) as per EN 1610. By applying these tests, we can get results about leakages of the pipeline, if any. Or we can see how much pressure the line is holding.

How Can We Do These Tests?

In our previous articles we have explained the Leak Test as per EN 1610 for sewer, storm, drain pipelines by “Water Filling through Manhole” and “Water Filling through Plug”.

Leak Test Procedure as per EN 1610 by “Water Filling through Manhole” method is explained in this article. And Leak Test Procedure as per EN 1610 by “Water Filling through Plug” method can be read here.

What Should We Pay Attention To When Testing?

In this article we would like to mention about the 3 major mistakes made when testing.

1-Height of the Water Column

When applying the test method “Water filling through manhole” for leak test, the pressure on the pipe stopper has to be 0,5 bar. That means the height of water column must be 5 meters as you can see at the below image. This is an issue that many users do not pay attention.


2-Compressed Air between the Stoppers

Another important issue is the compressed air between the pipe stoppers in the pipeline. When we fill the pipeline with water between two pipe stoppers for leak test, we have to be sure that there isn’t any compressed air left in-between. Many users cannot get the actual results since they measure pressure together with compressed air.

For avoiding this mistake users can use the Air Discharge Adaptor; and can watch our video about Concrete Pipe Leakage Testing with Plug to how to use Air Discharge Adaptor.

3-Pressure of 0,5 Bar

The most important issue is to achieve a pressure of 0.5 bar for leakage test as per EN 1610 when “Water filling through plug”. Therefore; we have to be sure that the total pressure on the pipe stopper must be 0,5 bar. We can calculate the total pressure as below formula.

  • P: Total Pressure=0,5
  • X: The pressure created by the Manual Pressure Test Pump
  • H: Static Pressure


We have to pay attention to measure pressure on the pipe stopper. Users can watch the video about Gravity Pipe Leakage Testing to learn how to measure the total pressure on the pipe stopper.