Oslo sand filter for public pools and large volumes
OSLO , Ø1050 , sand filter, filtering speed 30m3/h/m2
Vertically bobbin wound, high-performance,
Filtering height 1200mm
Two determinating elements are linked to water quality - filtration and disinfection.
Astral OSLO filters
AstralPool Oslo filters for public pools are high performance, vertically bobbin wound. Made from polyester reinforced with glass fiber, totally protected from corrosion, this range of filters proves to be highly resistant mechanically, chemically and thermally.
The principle feature of the Oslo sand filter is the height of the filtering bed. The higher the position of the filtering bed, the higher the filters performance. The excellent performance of the Oslo provides high-quality water.
The Oslo filter's high retaining level contributes to the low level of water turbidity, polluting agents are filtered and therefore, reduced.
Backwash is diminished proportionally to the height of the filtering bed. This results in less water being used, fewer backwash cycles, and less use of the filtrating medium.
The most efficient filtering and backwash use is obtained by an optimised combination of the filtering medium - this is ideally composed of anthracite, sand and gravel, recommended for filtering beds of 1.20m and more, reducing friction loss and increasing filtering power.
Features of the Oslo filter
2. Air purge
3. PVC pipework
4. Optional level indicator
5. Ø 400mm lateral access orifice (optional)
6. PP sieved floor
7. Air wash connection
8. Polyester supporting base
This allows regular inspection of the filters sand level and verifies the expansion of the sandbed during the wash cycle. This can be positioned in several areas of the filter tank.
To incorporate the filtering recharge and facilitate access to the filter - can be positioned in several areas of the filter tank
System with sieved floor with 0,5 mm grooves for air wash, lessening water consumption reducing costs and contributing to water preservation. This also contributes to the evacuation of stagnant water present in conventional models with tubed collectors
Tubed collector system with grooves 0,3 mm evenly distributing for perfect water circulation.
Dimensions of Oslo filter
Filtration height 1.20m.
- Maximum operational temperature 50ºC.
- Conform to EU regulation relating to pressure 97/23/CE, paragraph 3, article 3.
- Hydraulic pressure tested
1,5 x maximum entry pressure.
- Resistance and thickness calculations are based on the norm BS-4994 and AD-Merkblatt N1.
- PVC internal components and pipework.
- PP sieves.
- Lower connection for air washes on models with a sieved floor.
- AISI-316 stainless steel hardware.
- EPDM O-rings.
- Varied positions for level sight glass and openings
- Varied diameters for connections and purge valves .
- 400mm access orifice
- Upper air purge connection
- Tubed, grooved collector 0.3mm
- Working pressure 2.5 bars to 4 bars
- Lower water purge
- Filter bed height 1200mm
- Pressure gauge
Material used for the manufacture of DIN 18820:
Iso neopentyl-glycol protective gel coat type CSS-UP3 is used for manufacture. Rigid and resistant to sand abrasion and salt water • Replies to the KTW recommendation and is certified LVHT • The ozone resistant option has a vinylester protective layer, type CSS-PHA5. • Laminated with non-orientated glass fiber reinforced polyester, type GF-UP1 • Reinforced in the zones where type MW piercings are present, alternated with layers of alternated fibers and non-alternated fibers. • Bobbin wound with radial layers on the cylindrical section and GF-UP1 type polar layers the length of the filter. Digitally controlled bobbin manufacturing process. • High-performance mechanical resistance to internal pressure • Outer protective layer of de polyurethane resistant to U.V. • All these of filters have been submitted to a 60ºC hardening process.
Recommended filter recharges
Price incl. VAT
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Other product : Oslo sand filter for public pools and large volumes
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