What does string insert mean in practice?
The wound fiber creates a labyrinth of graduated density, well able to absorb a larger load of diversified sediment.
When does it matter?
When dealing with fibrous or sticky contaminants, it may work differently than a foam insert with the same micron value.
Which solutions are related to it?
The material of the string is selected according to the temperature and chemistry of the water, and the exchange is determined according to the pressure difference and flow.