Chester from Rieckermann informed, that you plan to install gear pumps below R-4X10 and R-4X20. We strongly request you to DO NOT install these pumps as long as ALL connected pipelines are installed on the reactors and the reactor and pipelines are surly cleaned. Based on our experience, during installation of pipelines dirties, rust, residues of welding joints and so on will remain in the pipelines and/ or fall into the reactors and finally fall into the pumps, what will lead to destroy the gears and/ or housing of them.