1. Flange connection

The most common connection method for API petroleum hoses is flange connection. This connection method requires the use of specialized flanges and bolts to tightly secure the two flanges together, and then insert the hose into it. This connection method has good sealing performance and can effectively prevent oil leakage. In addition, flange connections also have the advantage of easy installation and disassembly, allowing for quick completion of operations when hoses need to be replaced.

2. Threaded connection

In addition to flange connections, API petroleum hoses can also be connected through threads. This connection method requires creating a threaded interface between the hose and pipeline, and then using bolts to tightly secure the two together. The threaded connection has high sealing performance and can effectively prevent oil leakage. However, threaded connections are more complex compared to flange connections, and installation and disassembly are also more difficult.

3. Quick plug connection

API petroleum hoses can also be connected through quick plug connections. This connection method requires the use of a specialized quick connector, where one end of the hose is inserted into the quick connector and the other end is inserted into the pipeline. Quick plug connections have the advantage of fast installation and disassembly, allowing for quick hose replacement in emergency situations. However, the sealing performance of quick plug connections is relatively low, and additional sealing measures need to be taken to ensure that oil does not leak.

II Sealing method for API petroleum hoses

1. Mechanical seal

Mechanical sealing is a common API oil hose sealing method. This sealing method requires creating a mechanical sealing device at both ends of the hose, and then installing the device on the hose. Mechanical sealing devices are usually composed of components such as springs, sealing rings, and O-rings, which can effectively prevent oil leakage. Mechanical seals have good sealing and durability, but they require regular inspection and maintenance to ensure their normal operation.

2. Liquid sealing

Liquid sealing is a simple and effective method for sealing API petroleum hoses. This sealing method requires creating a liquid sealing device at both ends of the hose, and then installing the device on the hose. Liquid sealing devices are usually composed of special liquid fillers and sealing gaskets, which can effectively prevent oil leakage. Liquid seals have lower costs and a simple installation process, but require regular inspection and maintenance to ensure their normal operation.

3. Heat shrink tube sealing

Heat shrink tubing sealing is a commonly used API oil hose sealing method. This sealing method requires making a heat shrink tube at both ends of the hose, and then placing the heat shrink tube over the hose. After heating, the heat shrink tube will shrink and tightly adhere to the hose, forming a reliable sealing layer. Heat shrink tube sealing has good sealing and durability, but requires professional equipment and technology for installation and maintenance.