Klaus Union pumps cover not only high temperatures of up to 450 °C (842 °F), but also temperatures as low as -200 °C (-328 °F). This is essential for cryogenic applications, where heat input has to be minimized. It is achieved through the use of non-metallic containment shells made of zirconium oxide, which are not electrically conductive. Due to this characteristic there are no eddy currents affecting the pump’s performance and in consequence, the pumping fluid is not being heated in the process.