Following our service philosophy “your worldwide partner”, Klaus Union works with subsidiaries, and approved representatives and service partners worldwide.

Since the founding of Klaus Union Service GmbH in 2006 our efforts focus on providing service and support for our customers quickly and comprehensively. As an independent service company with exceptionally strong customer focus, we provide a full service, using state of the art technologies and experience. Klaus Union Service draws on 75 years of process engineering with pumps, valves and agitator drives.

We provide service and planning advice, clearly arranged documentation and other required services, including the delivery of spare parts on short lead times.

Our individual service and maintenance contracts provide safety and certainty with your specific needs and location in mind. Through our worldwide network of partners we have highly trained maintenance staff worldwide along with fully equipped workshops to provide service, training and onsite services.

Quality is at the centre of all we do. Quality assurance measures certified to international standards are implemented across our company and sub suppliers providing the best product and service possible.

Quality comes first

Quality is at the centre of all we do. Quality assurance measures certified to international standards are implemented across our company and sub suppliers providing the best product and service possible.



We will analyse your technical problem and provide a technically inspired solution to solve the issue and get you back in service. Areas that we can look at is equipment reliability and availability, maintenance planning, risk management, equipment upgrades and other operational reviews.

We work with our customers by engaging with all stakeholders to provide the best solutions that benefit your business.

As part of the Klaus Union family Klaus Union Service GmbH has access to all Klaus Union knowledge and state of the art technology.

Providing expertise in logistics worldwide we are provide high availability and fast delivery of all key spare parts. We are always working on improving our systems to keep them best in class and provide you with fast service to keep your equipment online.

Service Performance

  • Workshop Repairs
  • On-Site Repairs
  • Genuine Spare Part Delivery Worldwide
  • Spare Parts Storage
  • Customized Spare Parts Management
  • On-Site Maintenance
  • Retrofitting
  • On-Site Testing
  • Customer Advisory Service
  • Laser Alignment
  • Start Up & Commissioning
  • Individual 24 / 7-Service
  • Trouble Shooting
  • In-House & On-Site Training
  • On-Site Assembly and Disassembly
  • Long-Term Maintenance Contracts
  • On-Site Monitoring
  • Maintenance Planning and Consulting
  • Diagnostics
  • Installation

Testing Facilities

In our modern testing facility, pumps are tested up to DN 1200.

Testing of the repaired pumps with appropriate test reports gives you optimum plant safety and availability.

  • Testing range: Q = 0.1 m³ /h up to 5.000 m³ /h H = 2 m L.C. up to 1.000 m L.C. ΔP = up to 100 bar Motor power: up to 1.800 kW n = up to max. 3.500 rpm
  • NPSH-measurements
  • Axial thrust measurements
  • Vibration measurements
  • Noise measurements
  • Test run according to HI 14.6 / DIN EN ISO 9906 and API 685 2nd Edition.


Klaus Union Service GmbH accompanies you from the offer complying with the specifications, via the commissioning of complete plants, to the assurance of plant availability with scheduled maintenance intervals and process optimisation.

Workshop Repairs

Klaus Union Service uses state of the art manufacturing machinery for the production and repair of pumps and valves. The following different types of welding processes can be carried out:

  • TIG
  • E
  • Plasma

Plant-specific modifications and changes of pumps are accompanied, executed and documented by the design department of Klaus Union


Use, maintenance and repair of magnet drive pumps

We are one of the leading suppliers of pumps and valves especially for the chemical and petrochemical industry. Product competence from over 70 years, modern and flexible manufacturing methods provide the optimal basis for the development of problem solutions.

Practice-Oriented and User-Specific

The workshop will provide you with extremely useful information about magnet drive pumps. The experience you acquire during the workshop will help you support your company’s processes and prepare it to meet future challenges.

Target group:
All maintenance, production, service, installation planning, and process engineering staff members whose work involves mounting, commissioning, maintenance and repair for magnet drive pumps.

Aim of workshop:
The workshop will take a theoretical and hands-on approach to familiarise participants with commissioning, proper assembly and dismantlement, troubleshooting and remedying issues, and fluidic basics in magnet-drive pumps.

Workshop content:
The workshop will cover the following topics in respect to magnet drive pumps:

  • Manufacturing
  • Use, Commissioning and Maintenance
  • Diagnosing and Eliminating problems
  • Damage Analysis


  • 24th and 25th of September 2024 (German)
  • English on Request


  • 2 days
  • 1 day from 9 a.m. - 4 p.m.
  • 2 day from 9 a.m. - 3 p.m.


  • 730,- € per person plus tax


  • 1 day: H+ Hotel Bochum
  • 2 day: Klaus Union headquarters in Bochum


H+ HOTEL Bochum
Stadionring 22
44791 Bochum
(101 € per single room, overnight stay with breakfast)



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