The term industrial technology covers numerous specialist applications.

Smaller quantities are generally required for such applications, with special demands placed on robustness, hysteresis, shift force and temperature ratings. In some cases, equipment even has to be suitable for deployment in explosive environments.

In modern mining, the miner is protected by hydraulically-operated shields. This so-called shield assembly forms a type of bow, which is pressed hydraulically against the rock and tensioned. Naturally the hydraulic system must fulfill numerous safety requirements. Shut-off valves prevent the pressure in a cylinder from suddenly dropping, for example.

The solenoids have a correspondingly sophisticated design. Two independently operating single-acting solenoids are always in use: one to extend a cylinder, and the other to retract it.

The main hazard in coal mining is still caused by the fact that the coal releases combustible gases, which can explode in so-called fire damp. Since even a small spark can be enough to do this, all electrical equipment must be designed to ensure that no sparks occur (intrinsically safe equipment).

Our ATEX proportional pressure reducing valve is also used in explosive atmospheres. This is a series valve which fulfills explosion protection requirements with just a few additional components.

Many doors open and close automatically, when a sensor detects a person. Pressure limiting valves are used during the opening and closing movements.