DELTAFILTER Filtrationssysteme GmbH

DELTA-OW cast double filters

The DELTA-OW cast double filters, as part of the screen basket filters, are designed for the filtration of liquids and their construction enables a continuous flow by switching between the filter chambers. This system ensures that operation can continue undisturbed even during the maintenance phases of one of the filter elements. The filter housing is made of cast stainless steel, gray cast iron or cast steel and coated to increase its resistance to corrosive influences and mechanical loads. An INLINE design of the inlet and outlet openings supports simple integration into existing pipe systems.

The design of the double filters allows them to be opened without special tools, which simplifies access to the strainer basket inserts and makes them easier to clean. FPM gaskets, which are highly resistant to chemicals and temperatures, are used as standard for sealing. Developed according to the principles of good engineering practice, DELTA-OW duplex filters are designed without CE marking, which nevertheless underlines the high quality and safety of the products. This filter range is specifically designed to meet the requirements of a wide range of industrial applications while providing efficient and reliable filtration performance.

Product information

  • Flow rate up to 300 m³/h (based on clean water)
  • Nominal connection sizes with flange DN 20 to DN 200
  • Nominal connection sizes with 3/4" - 2 1/2" BSP internal thread
  • Max. Permissible pressure up to 40 bar
  • Permissible max. Temperature 50°C
  • Strainer baskets made of stainless steel 1.4571/1.4401
  • Standard filter finenesses 50 µm to 6350 µm nominal
  • Special gauges in 10 and 25 µm in pleated (folded) design
DELTA-OW cast double filters

Further information

Type Max. permissible. Pressure at 50 °C (internal thread) Max. permissible. Pressure at 50°C (flange EN1092-1)Housing material Changeover tap material Material internal parts
DELTA-OW/O 17 bar 16 bar Gray cast iron; EN 1561; EN-JL 1030Latex casting; EN 1563 EN-JS 1030Steel; EN 10087; 1.0715
DELTA-OW/WB 17 bar 16 bar Gray cast iron; EN 1561; EN-JL 1030Bronze; BS1400; LG4CStainless steel; EN 10088; 1.4305
DELTA-OW/S 22 bar 16 bar Cast steel; EN 10213/ 1.0625Latex casting; EN 1563; EN-JS 1030Steel; EN 10087; 1.0715
DELTA-OW/S/WB 22 bar 16 bar Cast steel; EN 10213/ 1.0625Bronze; BS1400; LG4CStainless steel; EN 10088; 1.4305
DELTA-OW/SS 22 bar 14.3 bar Stainless steel casting; EN 10213/ 1.4408Stainless steel; EN 10213; 1.4408Stainless steel; EN 10088; 1.4305
DELTA-OW/C 17 bar 16 bar Gray cast iron; EN 1561; EN-JL 1030Stainless steel; EN 10213; 1.4408Stainless steel; EN 10088; 1.4305
DELTA-OW/S-A300 40 bar Cast steel; EN 10213/ 1.0625Latex casting; EN 1563; EN-JS 1030Steel; EN 10087; 1.0715
DELTA-OW/S/WB-A300 40 bar Cast steel; EN 10213/ 1.0625Bronze; BS1400; LG4CStainless steel; EN 10088; 1.4305
DELTA-OW/SS-A300 35.6 bar Stainless steel casting; EN 10213/ 1.4408Stainless steel; EN 10213; 1.4408Stainless steel; EN 10088; 1.4305
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