A gas seal type is also available that is suitable for handling heavily polymerize or crystallization prone liquids and liquid with a high concentration of slurry. The special feature of this pump is that a gas chamber is located between the pump unit and the motor unit. The gas chamber separates the pump unit from the motor unit completely. This prevents the risk that the mechanical seal wears out through the pumped liquid. The clean original liquid or clean liquid can be mixed with the pumped liquid if only a very small amount is used. Also, because gas collects in the gas seal chamber, for example, air can be used on nitrogen.

Allowable max. slurry 30 wt%.