Repair of standard - and special fittings
Aeronautical engineering and mechanical engineering
Precision machining of mechanical parts of all kinds
Engineering services for large systems

We aim to meet our customers´ demands, by exceeding their expectations.


Relais-Control is a specialist in servicing and repairing large industrial plants. We can repair valves, pumps and control valves of all kinds as new and offer our customers a full service concept from a single source.

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about us

Since 1986, Relais-Control GmbH & Co.KG has been setting standards in the field of measurement and control systems, mechanical engineering and in the maintenance of valves. Moreover, a continuous development of ...

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For many years, Relais Control has been a supplier for several leading corporations of different industries. In collaboration with the contact persons on-site, we are optimizing the performance of your large scale plants.

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The most important tools for engineering are:
know-how, commitment and experience

Welcome to Relais-Control – your expert for valves, plant shutdowns, maintenance and mechanical engineering services for large-scale plants

Repairing all sorts of valves, ranging from standard to highly specialised valves.

Repairing valves up to a nominal diameter of 48“ and pressure ratings of up to 10.000 psi belong to our standard works.

Mechanical engineering and product of valves and aggregates

With our state of the art Relais-Control tool technology, we can machine any materials commonly found in power plant and plant construction.

Metal surface coating and welding techniques

High Velocity Oxygen Fuel (HVOF) coating with tungsten carbide or chrome carbide, according to industry standards.


Fieldservice and On-Site-Machining

We can carry out any valve refurbishment at our client facilities, due to our On-Site-Machining process.

Planning and Engeneering

Our techniques and procedures allow technicians to inject cleaner and sealant while the valve is in-line and under pressure.

Aeronautical engineering

Besides the post-processing of your work pieces, we are also dealing with the cleaning of your production components or moulds.



Relais-Control has been operating for many years as a distributor for well-known manufacturers in the field of valves for large sale industry.


As a successful and certified business/enterprise, we would be pleased to offer you our expansive customized maintenance services.


Here you can find further information and flyers about our specialized repairs for download .