With the gradual improvement of rubber technology, the types of rubber hoses are also increasing. But so far, we still often classify hoses according to high pressure and low pressure. So what is a high-pressure hose and what is a low-pressure hose?
First, let me introduce their classification standards
According to the classification standards, when the maximum pressure that the hose can withstand is not higher than 1.6MPa, it belongs to a low-pressure hose. If the maximum pressure bearing capacity of the hose exceeds 10MPa and does not exceed 100MPa, it belongs to a high-pressure hose. The hose between the two belongs to a medium-pressure hose. If the maximum working pressure exceeds 100MPa, it belongs to an ultra-high-pressure hose.
Differentiate from the use
Take the use of nitrile hoses in automobiles as an example. The pressures that high-pressure nitrile hoses and low-pressure hoses can withstand are different. Therefore, the places where they are used are also different. Therefore, low-pressure hoses are mainly used for suction ports with lower pressure, which belong to the input end. High-pressure hoses are used at the oil delivery end with higher pressure to quickly output fuel for the equipment and ensure the good operation of the machinery.
From a process point of view
The production process of high-pressure hoses is more complicated than that of low-pressure hoses. Low-pressure hoses only need to add wires or cloth to the skeleton layer to increase their pressure resistance. However, these measures are not enough for high-pressure hoses. Some materials, such as canvas, polyester wire, steel wire, etc., need to be added to the skeleton layer of high-pressure nitrile hoses to increase their pressure resistance.
In short, when purchasing hoses, we must pay attention to the choice of pressure. If the pressure resistance of the hose is too large, it may reduce work efficiency. If it is too small, it may cause cracks or even ruptures in the body of nitrile hoses.