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  • Offer Profile
  • Since 1946 Klaus Union is a market leader in the development of pumps and valves that meet the most exacting quality requirements. And this is as it should be, since our products are used to transport aggressive, toxic and explosive substances in the chemical and petrochemical industries.

    We play a major role in ensuring that plants in these industries operate reliably and in a manor that protects both people and the environment.
Product Portfolio
  • Pumps

  • We are a leading worldwide specialist in the market of industrial pumps and valves. The Chemical and petrochemical industries make extensive use of our magnetic drive technology. Since our incorporation, 70 years ago, we have acquired a well deserved reputation as a leading pump and valve specialist capable of meeting the most exacting quality and safety standards.
      • Centrifugal Pumps with Magnet Drive

          • SLM NV SINGLE-STAGE CENTRIFUGAL PUMP WITH MAGNET DRIVE

          • Centrifugal Pump based on DIN EN ISO 2858 / 15783
            • Fields of Application: Chemistry / Petrochemistry / Refrigeration and Heat Treatment / Oil & Gas / Power
            • Flow Rate: max. 3.500 m3/h
            • Delivery Head: max. 220 m L.C.
            • Temperature Range: -120 °C to +450 °C (Hochtemp.-Pumpe SLM NHO)
            • Pressure Rating: max. PN 400

            KEY FACTS

            • Design according DIN EN ISO 2858 / DIN EN ISO 15783
            • Maintenance-Free Permanent Magnet Drive
            • Modular Design
            • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
            • Bearing Bracket with Greased-for-Life Anti-Friction Bearings as a standard
          • SLM AP SINGLE-STAGE CENTRIFUGAL PUMP WITH MAGNET DRIVE

          • Centrifugal Pump acc. API 685
            • Fields of Application: Chemistry / Petrochemistry / Refrigeration and Heat Treatment / Oil & Gas / Power / On- & Offshore Plants
            • Flow Rate: max. 3.500 m3/h
            • Delivery Head: max. 220 m L.C.
            • Temperature Range: -120 °C to +450 °C
            • Pressure Rating: max. PN 400

            KEY FACTS

            • Design according to API 685 2nd Edition
            • Maintenance-Free Permanent Magnet Drive
            • Modular Design
            • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
          • SLM AV SINGLE-STAGE CENTRIFUGAL PUMP WITH MAGNET DRIVE

          • Centrifugal Pump acc. to ASME 73.3
            • Fields of Application: Chemistry / Petrochemistry / Power / Oil & Gas / Refrigeration and Heat Treatment
            • Flow Rate: max. 3.500 m3/h
            • Delivery Head: max. 220 m L.C.
            • Temperature Range: -120 °C to +450 °C
            • Pressure Rating: max. PN 400
               

            KEY FACTS

            • Design according to ASME B73.3 M
            • Maintenance-Free Permanent Magnet Drive
            • Modular Design
            • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
          • SLM NHO SINGLE-STAGE CENTRIFUGAL PUMP WITH MAGNET DRIVE FOR HIGH TEMPERATURE APPLICATIONS

          • Centrifugal Pump for High Temperature Applications (450 °C)
            • Design according DIN EN ISO 2858 / 15783
              Fields of Application: Chemistry / Energy / Heat Treatment
            • Flow Rate: max. 1.200 m3/h
            • Delivery Head: max. 200 m L.C.
            • Temperature Range: -120 °C to +450 °C
            • Pressure Rating: max. PN 40

            KEY FACTS

            • Design according to DIN EN ISO 2858 / DIN EN ISO 15783
            • Temperature Range up to 450 °C
            • Maintenance-Free Permanent Magnet Drive
            • Modular Design
            • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
          • SLM GV MULTI-STAGE CENTRIFUGAL PUMP WITH MAGNET DRIVE

          • Multi-Stage Centrifugal Pump based on DIN EN ISO 15783 / API 685
            • Fields of Application: Chemistry / Petrochemistry / Refrigeration and Heat Treatment / Oil & Gas / Power
            • Flow Rate: max. 350 m3/h
            • Delivery Head: max. 700 m L.C.
            • Temperature Range: -120 °C to +350 °C
            • Pressure Rating: max. PN 200

            KEY FACTS

            • Design according to DIN EN ISO 15783
            • Maintenance-Free Permanent Magnet Drive
            • Modular Design
            • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
            • Barrel Design Version without Variable Seal
            • Impeller Arrangement in Series; max. 6 Stages
            • First Low-NPSH Stage for Improved Suction Performance
          • SLM SV

          • Multi-Stage Side Channel Pump based on DIN EN ISO 15783
            • Fields of Application: Chemistry / Petrochemistry / Refrigeration / Oil & Gas / Vacuum Technology
            • Flow Rate: max. 42 m3/h
            • Delivery Head: max. 470 m L.C.
            • Temperature Range: -50°C to +200 °C
            • Pressure Rating: max. PN 40

            KEY FACTS

            • Design according to DIN EN ISO 15783
            • Maintenance-Free Permanent Magnet Drive
            • Modular Design
            • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
            • Barrel Design Version with only two static Seals
            • Impeller Arrangement in Series; max. 8 Stages
            • Self-Priming; First Low-NPSH Stage for Improved Suction Performance
          • SLM NVT

          • Submerged Pump based on DIN EN ISO 2858 / 15783
            • Fields of Application: Chemistry / Petrochemistry / Power
            • Flow Rate: max. 900 m3/h
            • Delivery Head: max. 200 m L.C.
            • Temperature Range: -50 °C to +200 °C
            • Pressure Rating: max. PN 40
            • Tauchtiefen bis 10 Meter

            KEY FACTS

            • Design according DIN EN ISO 2858 / DIN EN ISO 15783
            • Maintenance-Free Permanent Magnet Drive
            • Modular Design
            • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
            • Submerging Depth up to 10.000 mm
          • ENERGY EFFICIENT DESIGN

          • Enhancing pump efficiency through the use of non-metallic containment shells

            WITHOUT COMPROMISING ITS PERFORMANCE

            Through the use of non-metallic containment shells instead of the traditionally used metallic containment shells, Klaus Union eliminates eddy current losses and increases the efficiency of magnet drive pumps significantly.

            Thanks to the leak-free magnet drive concept, pumps with magnet drives have a huge market share in the chemical and petrochemical industry. For many years, Klaus Union has used nonmetallic containment shells and particularly those made from ceramics for various applications due to their high chemical resistance.

            Until recently, the operative range has been limited due to the specific material characteristics. However, pump applications increasingly demand higher operating pressures, temperatures and flow rates whilst still offering maximum efficiency.

            Klaus Union‘s ceramic ontainment shells meet this challenge and provide the following application coverage:

            • Nom. Pressure Range: PN 40 (PN 50 / PN 63 available on request)
            • Temperature Range: -200 °C to +400 °C
            • Transmittable Power: up to 1 MW
        • Centrifugal Pumps with Shaft Seal

            • NOV SINGLE-STAGE CENTRIFUGAL PUMP WITH MECHANICAL SEAL

            • Centrifugal pump acc. to DIN EN ISO 2858 / 5199
              • Industries: Chemical Industry/ Petrochemical Industry / Refrigeration and Heat Transfer / Oil & Gas / Paper and Cellulose Plants / Power / Sugar Industry / Coking Plants
              • Flow Rate: max. 3.500 m3/h
              • Delivery Head: max. 220 m L.C.
              • Temperature Range: -120 °C to +450 °C
              • Pressure Rating: max. PN 100


              KEY FACTS

              • Design according to DIN EN ISO 2858 / 5199
              • Modular System
              • Shaft Seal Packing; Single or Double Mechanical Seal (also available as a Cartridge Unit)
              • Heating for Casing and Casing Cover available
              • Mechanical Seal-Cover available
              • Design based on API 610 available on Request
            • GOV MULTI-STAGE CENTRIFUGAL PUMP WITH SHAFT SEALS

            • Multi-Stage Centrifugal Pump acc. to DIN EN ISO 5199
              • Industries: Chemical Industry / Petrochemical Industry / Refrigeration and Heat Transfer / Oil & Gas / Power
              • Flow Rate: max. 350 m3/h
              • Delivery Head: max. 700 m L.C.
              • Temperature Range: -120 °C to +350 °C
              • Pressure Rating: max. PN 100


              KEY FACTS

              • Design according to DIN EN ISO 5199
              • Modular System
              • Shaft Seal Packing; Single or Double GLRD (also available as a Cartridge Unit)
              • Heating for Casing and Casing Cover available, GLRD-Cover available
              • Design based on API 610 available on Request
                 
            • TP NO SUBMERSIBLE CENTRIFUGAL PUMP

            • Submerged Centrifugal Pump acc. to DIN EN ISO 2858 / 5199
              • Industries: Chemical Industry / Petrochemical Industry / Refrigeration and Heat Transfer / Power
                Flow Rate: max. 1.600 m3/h
              • Delivery Head: max. 200 m L.C.
              • Temperature Range: -50 °C to +250 °C
              • Pressure Rating: max. PN 40

              KEY FACTS

              • Design according to DIN EN ISO 2858 / 5199
              • Submerging Depth up to 10.000 mm
              • Design based on API 610 available on Request
            • P

            • Horizontally Mounted Propeller Pump
              • Industries: Power / Chemical Industry / Petrochemical Industry / Paper and Cellulose Industry / Cooling Water Plants/ Sea Water Treatments
              • Flow Rate: max. 12.000 m3/h
              • Delivery Head: max. 12 m L.C
              • Temperature Range: -120 °C to +250 °C
              • Pressure Rating: max. PN 100
            • UP LOWER-FLANGE PROPELLER PUMP

            • Vertically Mounted Propeller Pump for Integration into a Tank
              • Industries: Power / Chemical Industry / Petrochemical Industry / Paper and Cellulose Industry / Cooling Water Plants/ Sea Water Treatments
              • Flow Rate: max. 21.500 m3/h
              • Delivery Head: max. 8,5 m L.C
              • Temperature Range: -50 °C bis +400 °C
              • Pressure Rating: max. PN 10

              KEY FACTS

              • Vertically Mounted Pump for Integration into a Tank
              • Adjustable Propeller Blades screwed to the Hub
              • Flow Direction can be reversed by Repositioning the Propeller Blades
          • Twin Screw Pumps with Magnet Drive

                • SLM DSP-2C SINGLE VOLUTE TWIN SCREW PUMP WITH MAGNET DRIVE

                • Single Volute Twin Screw Pump acc. to API 676
                  • Industries: Chemical Industry / Petrochemical Industry / Oil & Gas / Power / Sugar Industry / Paint
                  • Flow Rate: max. 1.800 m3/h
                  • Differential Pressure: max. 40 bar
                  • Temperature Range: -120°C to +350 °C
                  • Viscosity: max. 100.000 mm²/s (cSt)

                  KEY FACTS

                  • According to API 676, 3rd Edition
                  • Maintenance-Free Permanent Magnet Drive
                  • Modular Design
                  • Cartridge Design
                  • Modular Construction (Multi-Part-Casing)
                  • Adaptive Feet with Centerline Mounting
            • Twin Screw Pumps with Mechanical Seal

                • DSP-2C SINGLE VOLUTE TWIN SCREW PUMP WITH MECHANICAL SEAL

                • Single Volute Twin Screw Pump acc. to API 676, 3rd Edition
                  • ‘Plug & Pump’ – Cartridge Design
                  • Industries: Chemical Industry / Petrochemical Industry / Oil & Gas / Power / Sugar Industry / Paint
                  • Flow Rate: max. 1.800 m3/h
                  • Differential Pressure: max. 40 bar
                  • Temperature Range: -120°C to +350 °C
                  • Viscosity: max. 100.000 mm²/s (cSt)

                  KEY FACTS

                  • Design according to API 676, 3rd Edition
                  • Wellenabdichtung über Gleitringdichtung, Wellendichtringe oder Stopfbuchspackung
                  • Shaft Seal: Face Seal or Gland Packing
                  • Mechanical Seals according API 610/682
                  • Modular Construction (Multi-Part-Casing)
                  • Adaptive Feet with Centerline Mounting
                • DSP-4CL DOUBLE VOLUTE TWIN SCREW PUMP WITH SHAFT SEAL

                • Double Volute Twin Screw Pump acc. to API 676, 3rd Edition
                  • ‘Plug & Pump’ – Cartridge Design
                  • Industries: Oil & Gas / Shipbuilding / Chemical Industry / Power / Sugar Industry / Paint
                  • Flow Rate: max. 5.000 m3/h
                  • Differential Pressure: max. 100 bar
                  • Temperature Range: max. +350 °C
                  • Viscosity: max. 100.000 mm²/s (cSt)

                  KEY FACTS

                  • Design according to API 676, 3rd Edition
                  • Maintenance-friendly „PLUG & PUMP“ Cartridge Design
                  • Dry-Run-Capable with double-acting Seals
                  • Suitable for nearly every Liquids, incl. Multiphase Fluids and Polymers
              • Valves

                  • DIN/EN Valves

                      • GLOBE VALVES - STRAIGHT SEAT ACC. DIN/EN

                        • Nom. Size Range: DN 15 – DN 300
                        • Nom. Pressure Range: PN 10 – PN 160
                        • Temperature Range: -200 °C up to +550 °C
                        • Materials: 1.4308, 1.4552, 1.4408, 1.4581, 1.0619, 1.5419, 1.7357, 1.7363
                        • Further Materials upon Request
                      • GLOBE VALVES - SLANTED SEAT ACC. DIN/EN

                        • Nom. Size Range: DN 15 – DN 200
                        • Nom. Pressure Range: PN 10 – PN 160
                        • Temperature Range: -200 °C up to +550 °C
                        • Materials: 1.4308, 1.4552, 1.4408, 1.4581, 1.0619, 1.5419, 1.7357, 1.7363
                        • Further Materials upon Request
                      • GATE VALVES - ISOMORPHOUS SERIES ACC. DIN/EN

                        • Nom. Size Range: DN 40 – DN 600
                        • Nom. Pressure Range: PN 2, PN 5 – PN 160
                        • Temperature Range: -10 °C up to +300 °C
                        • Materials: 1.4308, 1.4408
                        • Further Materials upon Request
                      • GATE VALVES (WEDGE OR DOUBLE DISC) ACC. DIN/EN

                        • Nom. Size Range: DN 50 – DN 600
                        • Nom. Pressure Range: PN 10 – PN 160
                        • Temperature Range: -200 °C up to +550 °C
                        • Materials: 1.4308, 1.4552, 1.4408, 1.4581, 1.0619, 1.5419, 1.7357, 1.7363
                        • Further Materials upon Request
                      • OVERFLOW VALVES ACC. DIN/EN

                        • Nom. Size Range: DN 15 – DN 150
                        • Nom. Pressure Range: PN 10 – PN 40
                        • Temperature Range: -200 °C up to +300 °C
                        • Materials: 1.4308, 1.4408, 1.0619
                        • Further Materials upon Request
                      • CHECK VALVES (PISTON CHECK VALVES, SWING CHECK VALVES) ACC. DIN/EN

                        • Nom. Size Range: DN 15 – DN 500
                        • Nom. Pressure Range: PN 10 – PN 160
                        • Temperature Range: -200 °C up to +550 °C
                        • Materials: 1.4308, 1.4552, 1.4408, 1.4581, 1.0619, 1.5419, 1.7357, 1.7363
                        • Further Materials upon Request
                      • SIGHT GLASSES ACC. DIN/EN

                        • Nom. Size Range: DN 15 – DN 200
                        • Nom. Pressure Range: PN 10 – PN 40
                        • Temperature Range: +50 °C up to +280 °C
                        • Materials: 1.4308, 1.4552, 1.4408, 1.4581, 1.0619, 1.5419, 1.7357, 1.7363
                        • Further Materials upon Request
                      • STRAINERS ACC. DIN/EN

                        • Nom. Size Range: DN 15 – DN 300
                        • Nom. Pressure Range: PN 10 – PN 40
                        • Temperature Range: -200 °C up to +550 °C
                        • Materials: 1.4308, 1.4552, 1.4408, 1.4581, 1.0619, 1.5419, 1.7357, 1.7363
                        • Further Materials upon Request
                      • BOTTOM VALVES ACC. DIN/EN

                        • Nom. Size Range: DN 25 – DN 200
                        • Nom. Pressure Range: PN 10 – PN 16
                        • Temperature Range: -200 °C up to +400 °C
                        • Materials: 1.4308, 1.4552, 1.4408, 1.4581, 1.0619, 1.5419, 1.7357, 1.7363
                        • Further Materials upon Request
                    • ASME/API Valves

                        • GLOBE VALVES - STRAIGHT SEAT

                          • Nom. Size Range: 2″ – 12″
                          • Nom. Pressure Range: Class 150 – 600
                          • Temperature Range: -200 °C – +595 °C / -325 °F bis +1,103 °F
                          • Materials: ASTM A351 CF8, ASTM A351 CF8C, ASTM A351 CF8M, ASTM A351 CF8MC,
                            ASTM 216 WCB, ASTM A217 WC1, ASTM A217 WC6, ASTM A217 C5
                          • Further Materials upon Request
                        • GLOBE VALVES - SLANTED SEAT

                          • Nom. Size Range: 2″ – 12″
                          • Nom. Pressure Range: Class 150 – 600
                          • Temperature Range: -200 °C – +595 °C / -325 °F bis +1,103 °F
                          • Materials: ASTM A351 CF8, ASTM A351 CF8C, ASTM A351 CF8M, ASTM A351 CF8MC,
                            ASTM 216 WCB, ASTM A217 WC1, ASTM A217 WC6, ASTM A217 C5
                          • Further Materials upon Request
                        • BACKFLOW PREVENTER

                          • Nom. Size Range: 2″ – 24″
                          • Nom. Pressure Range: Class 150 – 600
                          • Temperature Range: -200 °C – +595 °C / -325 °F bis +1,103 °F
                          • Materials: ASTM A351 CF8, ASTM A351 CF8C, ASTM A351 CF8M, ASTM A351 CF8MC,
                            ASTM 216 WCB, ASTM A217 WC1, ASTM A217 WC6, ASTM A217 C5
                          • Further Materials upon Request
                        • GATE VALVES

                          • Nom. Size Range: 2″ – 48″
                          • Nom. Pressure Range: Class 150 – 600
                          • Temperature Range: -200 °C – +595 °C / -325 °F bis +1,103 °F
                          • Materials: ASTM A351 CF8, ASTM A351 CF8C, ASTM A351 CF8M, ASTM A351 CF8MC,
                            ASTM 216 WCB, ASTM A217 WC1, ASTM A217 WC6, ASTM A217 C5
                          • Further Materials upon Request