Product category:
Filters and Centrifuges
News Release from: Rosedale Products Europe | Subject: Bag filters and strainers
Edited by the Processingtalk Editorial
Team on 05 May 2005
Low volume bag filters and strainers
Filters manufactured by Rosedale are the smallest able to meet the diverse requirements of industrial manufacturing processes across filtration level, chemical compatibility, temperature and pressure
Model 4 fluid filters manufactured by Rosedale Products Europe are the smallest in a range of housings and elements that has evolved to meet the diverse requirements of industrial manufacturing processes over a broad spectrum of filtration level, chemical compatibility, temperature and pressure Filter housings will, without modification, accept either filter bags from 1 micron absolute up to 800 micron or strainer baskets with from 1.5mm to 6.3mm perforations
This article was originally published on Processingtalk on 2 May 2005 at 8.00am (UK)
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Economical multi-basket process filters save space
Filter housings from Rosedale are now available in seven sizes holding from 2 to17 industry standard filter bags or strainer baskets, providing compact filtration units for flows up to 13250 l/min
Product catalogue with added technical value
All the industrial process fluid filters and media manufactured by Rosedale Products Europe are presented in their catalogue, with full fluid compatibility charts and technical data on common liquids
Unfiltered fluid enters the top of the bag/basket and passes through from inside to outside leaving solids on the inside surface from where they are easily and completely removed during servicing.
Housings are manufactured from either mild steel or stainless steel in 2 lengths to accept industry standard bags of 152mm or 304mm.
Bowl diameter in all cases is 114mm.
Further reading
Duplex filters for continuous filtration
Rosedale Products Europe can now offer all their carbon steel and stainless steel filter housings from 25 to 300m pipe sizes, as duplexed sets, which allow element servicing without shutting down
Filters minimise maintenance costs
In an on-going drive to reduce the maintenance costs of their filters, Rosedale Products Europe have developed a backwashing bag type fluid filter using pressurised air for driving the cleaning
Inlet and outlet pipe connections are female BSPF in four sizes; 1, 1 1/4, 1 1/2 and 2 inches for nominal flows up to 1100 l/min.
In combination with fluid viscosity, element rating and other relevant factors, pipe size is selected to produce a pressure differential which does not exceed 0.14 bar across the unit when clean.
The filters are rated for 20 bar working pressure.
Rosedale bag media is constructed using the company range of fabrics chosen to give the widest application potential.
Felts in polyester, oil-absorb, polypropylene, Nomex and Teflon between them cover a filtration range from 1 micron absolute up to 200 micron.
Monofilament and multifilament meshes in polyester, polypropylene and nylon between them cover a range from 5 micron to 800 micron.
Temperature acceptance is from 125C (Polypropylene) to 275C (Teflon).
Three eyebolts secure a lift off cover giving access to the filter bag /basket when cleaning is needed.
An optional displacer can be fitted to the underside of the cover to take up volume within the bag/basket so that when the cover is removed, the fluid level within the filter is materially lowered.
This results in less spilled product and cleaner servicing.
The choice of cover seal material is nitrile, eythlene propylene, viton or teflon.
For installations where it is essential to maintain continuous filtration without stops for element cleaning, two Model 4 filters can be mounted together on common inlet and outlet pipes in a duplexed system where one filter is always online whilst the other is isolated for servicing and standby.
A patented butterfly valve mechanism changes the filters over without a break in filtration.
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