Special Dry-Running Centrifugal Pumps Save Time, Money, and Problems

Related Vendors

EagleBurgmann Germany GmbH & Co. KG

Maag Pump Systems AG

Italvacuum, Srl

Paul Bungartz GmbH & Co. KG

Low energy consumption

But it is not only the thermal stability that makes the special centrifugal pump a virtually all-purpose troubleshooter. Since neither the bearing nor the magnetic drive are in direct contact with the pumping media and various impeller geometries are available, the pump can be operated almost independently of fluid. It is suitable for chemical pumping liquids, regardless of whether they are toxic, corrosive or contain solids or gases. The pump also features a low energy consumption thanks to the use of rolling bearings and ceramic separating can.

For example, savings of up to € 7000 can be achieved over an operating time of 8000 hours (10 ct/kWh, size 50/250, n = 2900 1/min). More recent calculations estimate an average cost saving of one Euro per operating hour.

Safe and reliable

DryRun has demonstrated its particularly high operational safety and reliability in another application example in which the pumping medium, an acrylic acid residue with a temperature of 110 °C, has a tendency to polymerise and thus solidify when it cools. The original pump, a standard pump with a double mechanical seal, reacted to the polymerising material with damaged mechanical seals several times a year. Each of these downtimes resulted in costs of € 1000 to 2500 because the old pump had to be dismantled each time so that it could be repaired and carefully checked.

Fed up with the costs and loss of time, the management team decided to change the pump at the start of last year. The standard pump was replaced by a DryRun. Just like the first application case above, this proceeded without complications because the Bungartz model has standard fitting dimensions according to DIN EN 22858.

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