Built out of Polyacetal completely, it resists any kind of bad weather or conditions, besides enduring pressures of up to 100 m.c.a. Load loss is of 0.2 m.c.a order for a 5,000 liters water flow and about 2.5 m.c.a. for a 10,000 liters flow per hour. Its maintenance is extremely simple, taking out the cover with filtering rings and washing them in current water.