Astralpool Filter for swimming pool mod. 500. Produced in polyester resin and fiberglass, with excellent finishes. Equipped with a transparent cover with a ring-shaped closure with a screw, and 1 "threaded easy-to-remove manifold arms. The connections for the 6-position selector valve include filtration, discharge, closing, washing, rinsing and recirculation. Equipped with water and air discharge pressure gauge manual Maximum operating pressure 2.5 bar.