Lotzer & Mühlenbruch GmbH
About
Lotzer & Mühlenbruch GmbH (L&M Pumps) is a German pump manufacturer headquartered in Delmenhorst, Niedersachsen, operating as part of the WTR Group AB. The company positions its offerings around the principle of “Pumps for the Highest Demands,” combining German engineering standards with competitive international pricing. Its flagship product is the LMS-APR Norm Process Pump, a horizontal volute casing pump built to ISO 2858 (DIN 24256) standards with capacity up to 7,000 m³/h, heads to 150 m, operating temperatures from –40°C to 180°C, and maximum pressure of 16 bar, featuring open, semi-open, closed, and VORTEX impeller options plus a Quick-Close system and exterior-adjustable wear plate. Additional centrifugal process pump variants cover specialized duty conditions. The slurry pump line handles abrasive and solids-laden slurries in mining and mineral processing, while positive displacement pumps cover eccentric screw and other PD technologies for viscous, shear-sensitive, and dosing applications. The CHEMOPAC mechanical seal line provides purpose-engineered shaft sealing for demanding process conditions. L&M also offers an extensive spare parts program manufacturing OEM-compatible replacement components with a 12-month warranty, pump selection software for sizing and specification, and system solution packages for the biogas sector integrating screen baskets, propellers, and augers. The company employs approximately 43 people in Germany with revenue in the €10–50 million range.
Key Products
Flagship centrifugal process pump built to API and DIN norms for handling aggressive, hot, and high-pressure fluids in chemical and petrochemical plants
Range of centrifugal process pumps in various configurations for industrial fluid transfer across chemical, petrochemical, and water treatment applications
Heavy-duty pumps designed for handling abrasive, solids-laden slurries in mining, mineral processing, and dredging operations
Eccentric screw and other PD pump types for viscous, shear-sensitive, and precision dosing applications in chemical, food, and pharmaceutical industries
Aftermarket replacement components manufactured by L&M compatible with major OEM pump brands, identified by OEM reference numbers for cross-referencing
Purpose-engineered mechanical seals for pump applications providing reliable shaft sealing under demanding process conditions
Online configuration tool that assists customers in selecting the optimal pump model and specifications based on application requirements
Integrated pump system packages combining multiple units with controls and accessories for complete fluid handling installations
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