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Pumps for ATEX certified applications

09 March 2012

Cat Pumps UK has developed and tested a full range of high pressure triplex pumps for use in Explosive Atmospheres. Thanks to their high standard of design and manufacture, standard high pressure triplex pumps require very few modifications to make them suitable for use in hazardous areas. Generally, minimising the risk of sparks caused by a build up of static electricity and strengthening a few parts to protect against accidental damage is all that is necessary.

Cat Pumps offer bareshaft pumps for use in both Zone 2 and Zone 1 areas. These are designated II 2G cb IIB T4 for use in most flammable gas environments except Zone 0 and are available for applications between 1 to 300litre/min and for pressures up to 700bar. The Company also has the facilities to build its pumps into motorised packages, including ATEX motors to the required configuration, together with transmissions, guards and other components. The two categories most commonly offered are:
 
Pump, motor and transmission for use in Zone 2 gas hazard areas, designated II 3G IIB T3
 
Pump, motor and transmission for use in Zone 1 gas hazard areas, designated II 2G cb IIB T3
 

These packages can be constructed as either direct-drive via a suitable flexible coupling or with a speed-reducing transmission depending on the flow rate specified. They can also be upgraded to the more demanding T4 category when required.
 
Cat pumps can, on request, also configure and supply pumps for Dust Hazard areas. The company is also happy to discuss applications for flammable liquids or those designated ‘dangerous’ according to EU directive 67/548/EEC, as it may be able to provide suitable specially-adapted products.”
 


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