Klaus Union GmbH & Co. KG is a Bochum, Germany-based manufacturer of centrifugal pumps, twin screw pumps, and industrial valves with over 75 years of process engineering expertise, serving the chemical, petrochemical, oil and gas, pharmaceutical, food, water treatment, marine, and renewable energy industries globally. The company’s magnetic drive pump line — its SLM series — is the centerpiece of its offering and encompasses single-stage, multi-stage, side channel, submerged, vertical inline, and PTFE/PFA-lined centrifugal pump configurations in DIN EN ISO, API 685, and ASME B73.3 compliant designs, as well as a twin screw pump with magnet drive (SLM DSP-2C) for API-compliant handling of viscous, shear-sensitive, or two-phase fluids. Klaus Union is particularly recognized for its patented Hybrid Double Containment Shell — a composite metallic/non-metallic containment design that delivers both the eddy-current-free efficiency of a non-metallic can and the mechanical strength of a metallic backup containment for enhanced safety in hazardous or high-pressure chemical service.