The hoses manufactured from polyvinyl chloride (PVC) have different properties to rubber hoses. In particular, they are able to withstand lower pressures and they have a different range of operating temperatures. PVC hoses can be manufactured in transparent versions which allow the supply of liquids to be visually checked. It is therefore also possible to monitor whether the conveyed liquid contains air or not. The disadvantage of PVC hoses is they are difficult to recycle. The advantage is that PVC hoses have a better resistance to mechanical damage.