ISO 4641:2010 specifies the minimum requirements for textile-reinforced, smooth-bore rubber water-suction and discharge hoses and hose assemblies.
Three types of hoses and hose assemblies are specified according to their operating duty requirements, i.e.their ambient and water temperature ranges:
⎯ ambient temperatures: −25 °C to +70 °C;
⎯ water temperatures during operation: 0 °C to +70 °C.
