In steel works, foundries and similar plants hose are exposed to extreme stresses due to slag and metal splashes. For these applications they are protected from burning by heat protection jackets made of glass and ceramic. The smooth surface of the jackets enables the frozen melted mass to slide off so that the thermal stresses of the underlying rubber hose construction is alleviated. The insulating effect of the jacket is marginal.

HU equipment can be combined with hoses with a smooth surface such as ALLERT TE, LS, LSG and NG and also with GUR.

Hoses are also used to transport tempered solutions and suspensions that would become solid at room temperature. So as to avoid freezing during downtimes, the hoses can be fitted with electrical trace heating. The built in heating power is variable in wider areas. The heating elements are built into the textile reinforcement area and are thus protected against damage. They come out at the end of the hose through the ceiling. The connection points can be designed according to the customers’ requirements.

The HZ design can only be combined with hoses that do not have a spiral and with GUR.

This design features a double seal. The interior is connected to the exterior with spiral shaped groove which is stretched over the entire length. The resulting space is closed at both ends. It also ends in a connection support which due to the design leads to the outside and is used as a connection for compressed air.

To remove deposits air is pumped into the space between the seals via the connection support allowing the loose seal to expand spirally. This makes the surface bigger so that the deposits are removed. The expanded state is shown in blue on the diagram.

This design can be built into hoses and GUR.

Hoses and pipes for transporting abrasive goods are susceptible to wear during use. This means that the seal wears down and this weakens the textile pressure carrier. This in turn leads to a decline in pressure resistance and the main worn areas can create holes in the construction. Ultra-sound scans to determine weaknesses in the wall give no reliable values in rubber.

The wear indicator designed by immuG Rohr + Schlauch GmbH consists of a close-mesh metal wire layer below the pressure carrier. A metallic counter electrode is built in to the flange sealing surface. The connection points from the wire layer and the counter electrode are fixed on the ceiling at the end of the component. When the hose or pipe is worn down to the wire layer, the resistance between the electrodes is deactivated. For continual monitoring of the condition of the sealant we also supply display instruments.

VI equipment is particularly suitable for the components of the GUR system.