Example of a new line cleaning for the distribution of liquid oxygen. In this case, the projectiles have been driven by the pressure supplied by a nitrogen cylinder. As you can see, the remnants of welding and other contaminants have been removed. Then, we fired some projectiles soaked in liquid degreaser and then dried ones to remove the residual product. Nitrogen has further helped to dry the interior of the pipe.

In the movie you can see the procedure performed for cleaning and degreasing the liquid oxygen line already present in order to enable it for use. The pipe showed evident signs of corrosion from rust whose removal required the firing of several dry projectiles having different diameters to gradually remove the coarser debris.
Following the removal of the rust deposits, we spread a degreasing agent over the entire inner wall, soaking other projectiles with the same product and making them passing a few times to remove the remaining excess liquid degreaser inside the tube. Finally a dry projectile was fired in order to clean and remove all traces of dust and liquid degreaser residues, so supplying a clean and dry pipe, ready to be used. This type of operation allowed the customer to save several thousand Euros and a considerable amount of working days that would have be needed for the replacement of the underground pipe, while in our case the cost was tens of times lower and the time required for cleaning was less than two hours.

This video shows the cleaning operation of a copper coil for refrigerant gas, in order to remove various types of impurities such as: oils, welding slag, dust and soot residues from the production of the copper pipe itself or from subsequent processing ; a fundamental operation to prevent mechanical failures, resulting from the transit of these impurities, to components such as compressors and valves. Shooting a projectile within each single section of approximately 38m in length takes just 5 seconds. Repeating the operation a total of 3 times was sufficient to obtain the desired result.

In this cleaning operation of a nitrogen and oxygen piping for laser cutting purpose, it was necessary to remove all contamination and processing residues that could damage and obstruct the machines. Due to the shape of the piping, with progressive diameter shrinkage, it was necessary to use the Food&Flex projectile, which is more adaptable in these situations. In fact, the line started from an internal diameter of 30mm, narrowing to 19 and ending at 15mm.
In the video you can also see a temporary solution adopted for the insertion of liquid detergent inside the vertical drops, connecting a U fitting, to pour the liquid and then shoot the projectile, choosing to use direct compressed air, via quick connection, due to the long length of the line (115m).

This video shows the cleaning of a section of pipe for refrigerant gas supplying the turbine of the air conditioning system carried out by our partner System Fluid s.r.l.
The welded and flanged tube with internal diameter of 154 mm is cleaned after its manufacture, but prior to assembly; this makes the cleaning operation more comfortable. In this case, there was a need not only to remove waste materials, but also proceeding with the degreasing of the tube. That’s why the bullet was moistened with a degreasing agent then shot several times. Finally, another dry bullet was fired to absorb any residue. The operation of shooting was performed, due to the big diameter, without the aid of the pistol, but by blowing nitrogen through a flange directly connected... at a pressure of about 8-10 bar.