Filter made of polyester resin and fiberglass. Excellent finish with gel-coat color RAL 8029. The filter has been designed with higher coefficient of security, to guarantee perfect operation. The union of the two bodies of the filter is carried out through a sealed specially reinforced with fiberglass and polyester resin. . Large diameter plastic li. Cap to make easier the sand discharge into the filter. . Fitted with 1” collector arms and diffuser made from unplasticised. Interior pipe with tubes of PN-16. . Sand purge of 2 1/2”. . Fitted with pressure gauge, air purge and manual water drain. . Connections to the multiport valve with six positions filter, backwash, rinse, recirculate, waste and closed. . AstralPool Innovation: The filter has a security valve to avoid any over-pressure. Maximum working pressure of 2,5 Kg/cm2.