KSB launches zero-leakage refinery pump for chemical applications

Pump and valve manufacturer KSB has launched a zero-leakage mag-drive pump series in back-pull out design for primary use with hazardous chemicals.

The horizontal, radially split volute casing RPHmdp, designed to US standard API 685, has been developed to reduce maintenance costs and ensure a maximum service life by combining a proven RPH hydraulic system with a new magnetic drive.

The pumps are primarily used for handling harmful fluids such as hydrocarbons containing benzene which are subject to very strict emission regulations. They are also well-suited for the transport of clean, explosive, toxic and valuable fluids in petrochemical plants and refineries, according to the company.

Depending on requirements concerning eddy current loss and efficiency, various material options for containment shrouds are available. The type series is designed for flow rates of up to 300 m³/h and a maximum head of 270m. The permissible operating temperature ranges from -40 °C to +300 °C.

KSB has also cooperated with sealing technology provider EagleBurgmann to develop magnetic couplings for the pump which seal the shaft.