Thanks to the pulse nozzles system, we guaranteed a constant flow of material and improved production.

Wood dust with glue residue no longer sticks to the walls of the chute. It regularly flows from the bag filter to the feeders.

We carried out the first installation of nozzle as a test project, which allowed us to thoroughly check the effectiveness of our solution.

Lead time

Before implementation

Our client built the compressed air collector on his own, based on our earlier design. What is important, the task was completed while the system was running, without the need to stop the technology.


A few days before start

This is how much time it took us to prepare technical arrangements, assembly guidelines and a detailed design of the arrangement of pulse nozzles.


8 hours or one shift

At that time, we installed pulse nozzles with a control system and started the completed installation.

Client problem

Wood dust along with glue residues regularly stuck to the walls of the chute. Problems with moving material into the feeder forced the maintenance manager to frequently shut down the technology, and service personnel to dangerously clean the hopper by hand. Emergency shutdowns occurred more and more often, disrupting production and generating significant costs.



The first challenge was the material in the chutes, i.e. wood dust with glue residue. It caused a very quick “overgrowing of the discharge”, blocked the container, and also created bridges. Due to the lack of patency, it was necessary to stop production and clean the tank.


The second challenge was to match the optimal size of the pulse nozzles, their arrangement and control. We wanted to create a solution that would guarantee the patency of the chute (by preventing the material from sticking to the walls) while limiting the possibility of lifting the material.


  • Detailed tests of the material in the Polstage laboratory.
  • Simulation of material flow (wood dust with glue residue).
  • Adapting the system to the challenges of the plant: high-energy VA51C pulse nozzles (over 70 liters of air in 0.25 seconds).
  • Installation and setting up the system in the plant.
  • Design support and system implementation in other client’s plants in Poland and Europe.

  • VA-51SS Pulse Nozzles
  • fitting elements of the MPN series
  • Control cabinets based on Siemens LOGO programmable relays

What did we do as a part of the project?

At the installation design stage, we conducted an advanced material flow simulation and detailed tests in the Polstage laboratory. The testing work helped us to investigate the problem in more detail and precisely design the best solution. Thanks to this, we matched the optimal arrangement of devices and the control algorithm.

After the test period, the client retrofitted all bag filters in his plant with an extensive installation of pulse nozzles (two VA-51C nozzles per section).

In the second stage of cooperation, we implemented an installation based on 2 high-energy VA-51C pulse nozzles (the devices eject over 70 liters of air in 0.25 seconds). This solution allowed us to minimize the number of nozzles and same time limit interference with the filter sheathing.


Finally, we managed to eliminate the problem of sticking dust with glue residue to the walls. The system of nozzles guaranteed a constant flow of material to the feeder.


Along with the nozzles and fittings, we provided our client with a power supply and nozzle control system, as well as design guidelines for the compressed air supply system


In the next step, we designed  and implemented together pulse nozzle installations in other plants of our client. Now employees of maintenance departments in Poland and abroad can enjoy uninterrupted work.

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