The machine could be driven in different power source such as electric generator, pneumatic device and etc. For the industry with specific requirement of huge working force to move, lift or process, the application of pressure is one common choice, the excellent performance and less risky in operation are both the reason why it is popular.
For example, the hydraulic pressure could be generated via compressor with harmless liquid such as water and oil; you only need to check the pressure gauge periodically and choose the hydraulic fitting with high durability for safety issue.
Since the pressure is generated from the compressed liquid, the passage for transmission must be firm enough to ensure the equipment works well. Therefore, different kinds of hydraulic hose fittings are produced and adopted for specific situation; so it would be even important to pay more attention on the basic accessories to compose the production line with quality and safety.