Catalog excerpts
For continuous flow without process interruption during cleaning process Design Appraisal Certificate no. HPC1461050/34963-16/TS Type Approval Certificate no. 16/20086 Aplications The KRF backflush filter is a versatile self-cleaning, maintenance-free filter for water and conditioned process water. capable filtering water process liquids from 25 p - 2 mm. Notice: The compatibility between medium and vessel or sealing material is the responsibility of the operator. The design of the pressure vessel is based on a quasi-static operation (load cycle number < 1000 according to AD 2000 Merkblatt S1, section 1.4). Max. Differential pressure inlet -outlet 2 bar. Approvals 3.1. Certificate, DGRL/ TUV, GL, LS, DNV, ABS, TR TF / TR CU Certificates (EAC), ASME U-Stamp, Lloyd‘s Register Type Approval Certificate No. 16/20086 ce conformity evaluation according 2014/68/EU and marking according the directive.
Open the catalog to page 1Brief description and operation The electronic control monitors the differential pressure applied to the strainer by differential pressure switch. If the preset standard differential pressure of 0.3 bar (0.1-0.7 bar setting possible depending on the design and application) is reached, the cleaning function is triggered. In addition the cleaning function can be triggered by a timer or manually at the touch of a button, depending on the operating conditions (as optional). The filter consists of an vessel with three different chambers. There is a coarse screen that is used as a prefilter in...
Open the catalog to page 2Performance • Water gets into the filter through the prefiltration chamber, where thick particles are retained, as it was a strainer. • Water gets into the filtering chamber, goes through from inside to outside the FILTERING SCREEN. • Dust remains on the screen interior what produces head loss between the filter inlet and outlet gradually. Two analogic transducers will indicate the backwashing sequence when the DP becomes 0.3 bar. There are other possibilities to make the filter backwashing: Time backwashing’s, time and pressure combination, continuous backwashing option. • When the pressure...
Open the catalog to page 3The cleaning effect The filter cleaning effect is created by the described reverse of flow / backflush through from the clean side of the screen (filtered water side) through the SS mesh, the nozzle, the cleaning chambers finally to the drain. Therefore the cleaning effect is influenced by the working pressure – or the pressure at the OUTLET of the filter. The higher this pressure during backflush is – the better the cleaning will be. The minimum pressure during backflush is 2–3 bar at 125 micron (example). When the filter mesh gets finer the necessary back- flush pressure has to be higher. This is a...
Open the catalog to page 4Technical data Technical data Standard version Special version or optional extras equipment Filter insert Filter cover Venting device Drain unit Connections Filter insert Cover with bolts and nuts Plug Plug Flange in accordance with DIN 2632 / Form C PN 10 Materials Housing Seals Perforated plate / mesh Cleaning nozzle Drain valve Electric gear motor Control CS carbon steel (Epoxy + Polyester) NBR SS304/PVC Ball valve Ball valve ANSI or in accordance with customer specifications, PN 16, PN 25 ASTM SS304, SS316/ SS316Ti, H II steel, CrNi, 1.0425 PTFE/FPM, other SS316L/POM Flush outlet valve...
Open the catalog to page 5Technical data and dimensions Model In /Out A B C D E Filtering Connect surface Connect ter consumption High quality water Medium quality water DN L kg m3/h1 Flow rate m3/h1 Flow rate m3/h1 Flow rate m3/h1 Flow figures are based on 100 / 125 micron and depend on water quality and filter mesh. So the actual allowed flow may vary. Contact Krone for exact dimensioning.
Open the catalog to page 6Model In /Out ABCDEFGH Filtering Connect surface Model In / Out Backwashing wa- Weight Max. flow rate High Medium Low Connect ter consumption quality water quality water quality water DN L kg m3/h1 Flow rate m3/h1 Flow rate m3/h1 Flow rate m3/h1 Flow figures are based on 100 / 125 micron and depend on water quality and filter mesh. So the actual allowed flow may vary. Contact Krone for exact dimensioning.
Open the catalog to page 7Model In /Out A B C D E FilteringConnect surface DN mm mm mm mm mm cm2 Flow figures are based on 100 / 125 micron and depend on water quality and filter mesh. So the actual allowed flow may vary. Contact Krone for exact dimensioning.
Open the catalog to page 8Head loss graph KRF 50 µm 1
Open the catalog to page 9Head loss graph KRF 125 µm 1
Open the catalog to page 10Product range Self cleaning filter Single filter Duplex filter • KDF-K • KDF-V • KDF-VB Other filter solutions Others / accessoires Self cleaning Bernoulli®-filter Backflush-filter Scraper filter Single basket filter (flanged) Threaded basket filter Welded / custom made basket filter Inlet flange and outlet flange inline Duplex filter Valve switch duplex filter Butterfly valve switch filter • KBF Bag filter • KOW Oil and water separator • SEP Separator Centrifugal separator Differential pressure indicator Contaminant level indicator Strainer inserts • Basket strainers
Open the catalog to page 11Krone Filter Solutions GmbH Industriestrasse 19 | 28876 Oyten / Germany Phone +49 42 07 9 87 69-0 | Fax +49 42 07 9 87 69-27 filter@krone-filter.com | www.krone-filter.com www.shop.krone-filter.com 05.2018 © by Krone Filter Solutions GmbH, subject to change.
Open the catalog to page 12Lloyd's Register Type Approval Certificate This is to certify that the undernoted product(s) has/have been tested with satisfactory results in accordance with the relevant requirements of the Lloyd's Register Type Approval System. This certificate is issued to: PRODUCER DESCRIPTION TYPES APPLICATION RATINGS Krone Filter Solutions GmbH Industriestrasse 19 28876 Oyten Germany Single, duplex and self-cleaning automatic filter with several housing sizes and combinations made from standard materials spheroidal iron castings EN-GJS-500-7 (GGG 50)* or EN-GJS-400-15 (GGG 40), carbon steel...
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