The SAMES KREMLIN paint restrictor calibrates the flowrate and creates a controlled pressure loss upstream. The nozzle only distributes the paint to the aircap.
The fluid remains longer in front of the aircap and requires less air for the same quality.
The fluid remains longer in front of the aircap and with the same amount of air, the diameter of the droplets is reduced for an improved finish quality.
As the restrictor calibrates the flowrate there is no need to set the flowrate with the needle. The needle can remain on the back position and you will have the same performance and reduce the wear of the nozzle/needle (no more matting).
The controlled pressure loss brought by the restrictor allows you to increase the working pressure of the pump to be in optimum operating conditions while keeping the same ideal flowrate required by the application.