The elbow d90 mm with a 3″ female thread belongs to the category of large-diameter fittings intended for the main suction and discharge circuits of large pool or industrial installations.
The reinforced wall design is indispensable at a diameter of 90 mm – the pressure load at the bend is high and a standard wall would not withstand the entire service life of the system without risk of bursting.
The 3″ thread corresponds to industrial standardization and allows direct connection to large pumps, gate valves or ball valves without the need to reduce the system cross-section.
