
Pipe length - 3 m; spray coating length - 2.5 m. Filter with polypropylene spray coating d.160 is used in almost all non-suffusion non-cohesive and cohesive soils; - protection against penetration of root tissues and sand into the filter pipe; - can be used in neutral, acidic and alkaline environments with high mineralization of groundwater; - well filter has high mechanical strength; - simple design; - easy installation of the well filter; - high performance characteristics - the design is close to an ideal drain in terms of the nature of formation penetration; - well filter has a wide range of design types and versions; - filter coating complies with TU U 25.2-32556556-001-2003 and is approved for use by the Ministry of Health of Ukraine. Pipes with a water intake layer (well filter) made of fibrous-porous polypropylene, compared to analogues, have an optimal ratio in terms of: - filtration rate; - one of the best filter cycles; quality of purification from suspended solids; - protection against penetration of root tissues into the filter pipe; - increased dirt capacity of the filter; - possibility of flushing at high speed, which allows achieving a high degree