Sealing compounds

A manufacturer of building chemical products needed a reliable pump for transferring sealing compounds as part of a production process. Various liquids and powder components are blended together in a mixer to make sealing compound. The pump conveys the sealing compound directly to a bucket filling unit or storage tank. The composition of the sealing compound (highly viscous and with latex added) puts extra heavy demands on the pump.

The customer opted for a Boerger Protect Rotary Lobe Pump in stainless steel. Decisive-factors for this choice were the material variety and ease of maintenance provided by the Boerger pumps and especially the extensive experience of Boerger GmbH in dealing with the challenges of chemical pumped media. The pump is equipped with double-acting mechanical seals. A Boerger thermosyphon system is used for the pressurization of the double-acting mechanical seal.

While the bucket fills up, the volume flow is regulated by a bypass pipe to the mixing tank. This allows the pump to operate continuously. As an additional control for the excess pressure a Boerger Variocap with inductive sensor is used. 

Technical data