
Complete hydraulic, electrical and control systems including explosion protection – from design through manufacturing to assembly

Fluidtechnik Fiedler GmbH
DortmundNew on Amplifa
Expertise in Hydraulics, Electrics and Explosion Protection
Fluidtechnik Fiedler GmbH develops and manufactures complete, customer-specific control systems in Dortmund that combine hydraulics, electrics, pneumatics and control technology. The service portfolio covers design, drawings and circuit diagrams, control programming, manufacturing of hydraulic power units, cylinders, valves and control blocks, as well as assembly and acceptance testing – from the complete package to commissioning at the customer's site. Control systems are designed for pressures from 50 to 2000 bar and extreme operating conditions. As a certified manufacturer under ATEX Directive 2014/34/EU, the company produces explosion-protected electrical, hydraulic and pneumatic control systems in types of protection Ex d, e and i, individually or in combination. Further business areas include special machinery and fixture construction, automation, leak measurement technology with leak testing systems, complete test stands, and the distribution of hydraulic, pneumatic and electronic components via factory representatives. Control systems delivered have gone to more than 40 countries.
- Site
- Dortmund
- Processes
- Planning/Engineering, Design and creation of drawings and circuit diagrams, Control programming, Manufacturing, Assembly, Acceptance testing, Quality assurance with complete inspections and documentation, Explosion protection certification (types of protection Ex d, e, i)
- Materials
- Hydraulic Technology, Electrical Engineering, Control Technology, Explosion Protection (Ex d, e, i), Pneumatic Technology, Painting
- Certificates
- ISO 9001:2015, Explosion Protection Directive 2014/34/EU (ATEX), ISO 9001, ATEX 2014/34/EU (Ex d, e, i)
- Founded
- 1975
- Employees
- 23
- Industries
- Explosion Protection, Special Machinery and Fixture Construction, Automation, Leak Measurement Technology, Hydraulics, Pneumatics
- 01
Planning and Engineering
- 02
Design, Drawings and Circuit Diagrams
- 03
Manufacturing
- 04
Painting
- 05
Assembly
- 06
Control Programming and Acceptance Testing
- 07
Quality Assurance and Documentation
- 08
On-Site Assembly at Customer / Commissioning
Materials and Processes
Hydraulic Technology
Manufacturing of hydraulic power units, cylinders, valves and control blocks including complete hydraulic systems with piping and commissioning.
Electrical Engineering
Electrical equipment and electronic control systems for special machinery, fixture construction and plant engineering.
Control Technology
Control programming and automation solutions for pressures up to 2000 bar.
Explosion Protection (Ex d, e, i)
Certified manufacturing, final inspection and testing of explosion-protected control systems, individually or in combination.
Pneumatic Technology
Pneumatic control systems with conventional and logic components including valves, cylinders and accessories.
Painting
Painting in an in-house paint booth in the Dortmund manufacturing area.
Dortmund Site

Dortmund
DEHeadquarters, Development and Manufacturing
- Materials
- Metal, Steel
- Paint booth
- Manufacturing area Hydraulics/Electrics/Control Technology
In-House Manufactured Products





Inside the production











Industries
Additional services
Quality and Certification
Complete inspections and precise documentation accompany every manufacturing process. The quality management system according to DIN EN ISO 9001:2015 is verified through internal and external audits as well as annual surveillance audits for ATEX certification.
| Evidence | Dortmund |
|---|---|
| ISO 9001 | |
| ATEX 2014/34/EU (Ex d, e, i) |
Company History
- 1975
Founded as a sole proprietorship by businessman Hans-Rudolf Fiedler in Dortmund-Wellinghofen
- 1976
Relocation to Dorstfeld into a rented hall on Gießweg
- 1985
Relocation to the new building at the current company headquarters on Walter-Welp-Straße
- 2008
Addition of an extra floor to the office complex
- 2009
Certification according to ISO 9001
- 2011
Certification according to the explosion protection Directive 2014/34/EU
- 2014
Enlargement of the manufacturing area and expansion with a larger paint booth
- 2021
Takeover of the company by the managing directors Denise Grabellus and Stefan Schmitt