PVC Cables or PUR Cables: How to Choose the Right Cable
May 22, 2018
Cables are an essential part of any industrial application. It is important to make sure that you choose the appropriate cable material for the environment, especially where chemical cleaning solutions, cutting fluids, and other caustic liquids are present. The two main types of cables used in industrial applications are either PVC or PUR, and they are each suited to different types of environments. This article describes the difference between PVC and PUR cables and when to use each type of cable.
PVC Cables and When to Use Them
PVC cables are Polyvinyl Chloride (PVC) cables that are sheathed and insulated. PVC cables are an excellent choice for most chemical washdown applications in the food industry and beverage industry. They have good-to-excellent resistance to common cleaning solvents including, but not limited to:
- Sodium Hypochlorite
- Sodium Hydroxide
- Potassium Hydroxide
- Peracetic Acid
- Hydrogen Peroxide
- Quaternary Ammonium Compounds
It is also important to take into consideration the concentration of chemicals, temperatature of the process, and the duration and frequency of exposure since these factors can impact the suitability of PVC for these applications. Furthermore, PVC has limited resistance to oils, making it less suited for automotive and machine tool industries.
In addition to being resistant to common cleaning chemicals, PVC cables are generally more rigid than other types of cables. This makes them suitable for use in applications where they will be exposed to high temperature, high pressure washdown. The rigidity of the PVC sheathing protects the cable from damage and extends the life of the cable.
A PVC cable with IP69K rating means it is sealed against the ingress of water even during washdown. However, the rigidity of PVC cables can be a disadvantage in freezer applications, where low temperatures can cause the material to crack if the cables are being flexed. Discuss your specific application with an expert to determine the best cable material in these circumstances.
For More Information
Contact an engineer to help you select the right cable for your application.
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