Top or side manholes DN500 and DN600 for bobbin wound filters

Horizontal Bobbin wound filters are constructed from fibre glass and polyester resin for a maximum working pressure of 2,5 kg/cm2.
The production of these filters is controlled by computer and other specifically designed machines with a large degree of flexibility which allows reinforcing at any stage of manufacture. Excellent relation between the filter weight and its mechanical characteristics. Greater filtering capacity and greater efficiency of filtration.

CHARACTERISTICS:
– Resistant to corrosion unlike conventional steel filters.
– Maximum operating temperature: 50ºC.
– Complies with European standards for pressure vessels 97/23/CE included un section 3 of article 3.
– Hydraulic pressure test 1,5 times maximum admissible pressure.
– Resistance and density calculations are based on norms BS-4994 and AD-Merkblatt N1.
– Pressure gauge panel.
– Manual air and water purge.
– Loading access Ø400.
– Air wash connection.
– Internal components and pipe in PVC.
– Collector arms and nozzles in PP.
– Bolts, nuts and washers in AISI 316.
– Seals in EPDM.

ADVANTAGES:
– Higher quality water is achieved with their greater filtering capacity. Indexes of turbidity and contaminants of the filtered water are reduced due to their increased retention capacity.
– The time between washings increases proportionally with the height of the underlayer, and there are fewer interruptions of the filtration, and lower water consumption, because the number of washings needed is decreased and there is less erosion of the filtering material.
– Greater efficiency of filtration and washing are obtained from the optimal combination of carbon, sand and gravel recommended for underlayers of 1.2 metres or more, lowering the loss of load and increasing the retention capacity.
– Side opening: For unloading the filtration medium and facilitating access to the interior, can be located in different positions.
– Collectors: Collection system with arms with 0.3 mm slots made of PP and uniformly distributed for correct circulation of the water.
– Less height, greater filtration surface
– Quality filtration and transparency of water
– The AstralPool high performance, horizontal bobbin wound filters are made of polyester reinforced with fibreglass; they are totally anti-corrosive, and have high mechanical, chemical and thermal resistance.

OPTIONS:
– Options for side opening placement.
– Inner coating for ozone treatments.
– Peephole Ø135 and Ø400.
– Consult for other options and pressure.

This is a sand filter encased in reinforced polyester offering exceptional characteristics. Following efficiency and resistance tests four models of different diameters are launched in the market to satisfy all user needs.
Made of polyester resin and fiberglass. Excellent fi nish with gel-coat color RAL 8029. . The filter has been designed with higher coefficient of security, to guarantee a 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 lid. . 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 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.