How to maximise the lifespan and safety of steam hoses

19 November, 2024

In addition to proper drying techniques, using steam hoses with extruded inner walls can further mitigate the risk of popcorning. These hoses feature a seamless, homogeneous inner wall made of superior gas-tight rubber, which is resistant to water vapour penetration.

To ensure the structural integrity of steam hoses, it is also advisable to use hoses with galvanised steel inlays. Standard steel inlays can rust when exposed to water vapour, weakening the hose from within. Galvanised steel inlays, however, are more resistant to corrosion, significantly reducing the risk of internal damage and prolonging the hose's lifespan.

Ensuring structural integrity and safety

The structural integrity and safety of steam hoses is paramount to maintaining a secure and efficient industrial environment. A critical aspect of maintaining hose integrity is the use of galvanised steel inlays. Standard steam hoses are often fitted with steel inlays that are prone to rusting when exposed to water vapour. This rusting process can occur below the surface, invisible to the user, and can lead to significant weakening of the hose.

In addition to using corrosion-resistant inlays, it is essential to ensure that steam hoses are clearly marked. According to the EN ISO 6134-2A standard, steam hoses should be clearly marked with important product information, including the name of the producer, the standard with which the hose complies, the maximum operating pressure, and the maximum permissible temperature. Moreover, a red stripe running the length of the hose serves as a visual identifier that the hose is designed for steam.

To improve safety and ease of identification, it is recommended to use a spiral colour stripe with clear, printed text along the hose. This design ensures that the hose type is easily recognisable even in areas that are hard to reach.

Preventing steam leaks

Preventing steam leaks is crucial not only for maintaining the efficiency of operations but also for ensuring the safety of personnel. Leaks can occur due to issues with the hose itself or from loose clamp connections. To avoid unnecessary costs and dangerous situations, steam hoses are typically fitted with steel Boss clamping plates or high-pressure brass gripper clamps.

Boss fittings are known to begin leaking over time due to their oval shape and the opening where the two-part plates connect. A more effective solution is to use brass gripper clamps, which reduce the frequency of leaks. However, even these clamps do not eliminate the issue entirely, as the space between the two-part grips can still allow for some leakage.

To put an end to steam leaks and loose fittings, the use of press sleeves is recommended. High-quality steam hoses, such as the Goodall Inferno Steam Hose, combined with assemblies crimped with Goodall DuraCrimp ferrules, lock the ferrule into place with a special design interlock groove, forming a superior permanent connection. These galvanised steel DuraCrimp fittings and ferrules are Cr6-free, having no negative impact on the environment while ensuring a secure and leak-free connection.

Proper hose installation and regular inspections

Proper installation of steam hoses is crucial for ensuring their longevity and safety. It is important to check that the hose is installed correctly, with no sharp kinks behind the fittings, that it is free of tension and torsional stress. During installation, the fittings and hose connection should be checked at operating pressure. This should be done slowly and gradually to ensure there are no leaks.