Krajewski Wolfgang GmbH & Co. KG
About
Wolfgang Krajewski GmbH & Co. KG, trading as KRAJEWSKI Pumpentechnik, is a German engineering and manufacturing firm established in 1971 and based in Luneburg, with an additional branch in Celle. The company operates across Europe designing, manufacturing, and installing complete systems for municipal and industrial water supply and wastewater disposal. Its proprietary instrumentation line is anchored by the NEP compact multi-machine pump controller—now in its third generation featuring integrated pressure transduction, WiFi connectivity, and a detachable multilingual display—and the UDA universal data display for real-time monitoring of amperage, operating hours, impulse counts, and fill levels with SD card data logging and multi-destination alarm dispatch. The KHS range provides AISI 316Ti stainless steel cable clamps, sensor holders, and utility hooks for cable management in wet-pit environments. Additional branded products include hydrostatic and pneumatic level sensors, Ex-rated safety barriers for hazardous atmospheres, universal signal isolators (Universal-Trennverstarker), pitot tubes (Staudruckglocken) for dynamic pressure measurement, and multi-pin plug connectors in 4/4, 8/8, and 10/8 configurations. Beyond products, Krajewski delivers turnkey pump station construction (Anlagenbau), custom control cabinet engineering (Steuerungsbau), stainless steel pipe and profile fabrication with certified welders (Stahl-/Rohrleitungsbau), and rotating equipment repair and replacement (Elektromaschinenbau). The company's three divisions—Pumpentechnik, Steuersysteme, and Feuerschutz—serve municipalities, civil engineering firms, and industrial processors. Krajewski holds WHG Fachbetrieb certification and ISO 9002 quality management compliance.
Key Products
Compact multi-machine controller for pump stations that accepts passive and active sensor signals, converts to clear-text readings, with detachable multilingual display, WiFi, and integrated pressure transducer
Displays up to 8 machine parameters (amperes, operating hours, impulse counter, filling height) in one device with SD card data logging and multi-destination alarm dispatch
Stainless steel (AISI 316Ti) cable clamps, sensor holders, and utility hooks for secure cable management in wet pumping station environments
Continuous level measurement sensors using hydrostatic pressure principle for liquid level monitoring in tanks and wells
Level measurement via pneumatic principle for applications where direct electrical contact is undesirable
Dynamic pressure measurement bells for flow and level sensing in pump stations and water infrastructure
Single-level switching controllers for pump on/off control and alarm indication
Dual-level switching controllers for automatic pump control with separate on/off thresholds
Intrinsic safety barriers certified for hazardous and explosive atmospheres in industrial environments
Signal conditioning and conversion devices for integrating diverse sensor types into control systems
Multi-pin connector assemblies for sensor and equipment wiring in pump station installations
Complete design and construction of water supply and wastewater disposal plants and pump stations
Custom control cabinet manufacturing from planning through commissioning for pump stations and industrial applications
Stainless steel pipe and profile fabrication with certified welders for water and wastewater infrastructure
Design, repair, and replacement of submersible motors, dry-mounted pumps, compressors, blowers, and rotating electrical equipment
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