The Ekato Seal Division has further optimised the use of high pressure mechanical seals that are applied in rotating equipment for the process industries. By using a pressure splitting device it is possible to ensure a pre-defined pressure drop within the two seal chambers of a triple-acting mechanical seal, such as with the ESD66H.
The pressure from the vessel to the atmosphere decreases in steps, thus, reducing the pressure to which the individual seal ring pairs are exposed. The pressure splitter automatically adjusts the pressure within the seal chambers depending on the pressure in the vessel by means of a hydraulic piston action. In this way the pressure splitter extends the seal life time. Due to the fact that the system does not require circulation pumps or control valves, it is therefore not susceptible to faults in the power supply or measurement and control equipment. Using a mechanical seal with a pressure splitting device therefore guarantees increased operational safety and is particularly suitable for use in toxic or highly hazardous processes with temperatures up to 400 °C and a pressure of up to 200 bar.
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