Topfilter Protects Pumps From Unwanted Debris

Johnson Pump is offering the Topfilter range of filtration products, which protects pumps from unwanted debris in the pumped media. The Topfilter filtration products are available in two ranges, four material options and 11 separate sizes, offering filtration levels down to 10 microns. The Topfilters provide the pump user with an effective yet simple method of removing debris before it can affect pump performance. Topfilters are suitable for fitting to either the suction or discharge side of the pump and can be supplied by Johnson Pump as an integral part of the pump or as a stand-alone item.

Topfilters are available in single and dual filter models. The single filter, TFOV, contains a single chamber, which remains online. When the basket within the filter requires cleaning, the process line needs to be isolated in order for the filter basket to be removed. The dual filter, TFOW, has two chambers (only one is used at a time) and remains online. However, when the filter basket requires cleaning, the liquid flow is diverted by handle to the second chamber. The basket can then be removed while the process line remains in use. The benefit of this is that there is no downtime.

Both Topfilters offer the end-user the capability to operate the systems on applications up to 50 bar and at temperatures of up to 260C. They are suitable for a range of flanged or screwed connections with sizes ranging between 20 and 200mm. The application ranges of the TFOV and TFOW can be extended through the availability of a multi-basket filter option; with restricted pressure ratings, this range has the added advantage of a compact design and high filtration levels. This option can be used on connections of 150, 200 and 250mm.

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