Hydraulic Fittings Company introduced that hydraulic fittings play an important role in hydraulic systems. For example, the hydraulic oil in it plays the role of transmitting pressure, lubricating, cooling and sealing. If the hydraulic oil is not selected properly, it will cause the early failure and durability of the hydraulic system. At present, some large construction machinery hydraulic systems are equipped with intelligent devices, which can provide early warning of some hidden dangers in the hydraulic system, but they are mainly used for monitoring key parameters. Therefore, the inspection and maintenance of the hydraulic system should combine the monitoring results of the smart device with regular maintenance to better ensure that it is in good working condition and equipment condition.

Clean hydraulic oil is the guarantee of the life of the hydraulic system. There are many parts to the hydraulic system. If solid impurities invade, it will cause parts strain, hairpin, oil passage blockage, etc., endangering the safe operation of the hydraulic system. The common ways of solid matter intrusion are dirty hydraulic oil; dirty refueling tools; careless refueling and maintenance; hydraulic components falling off.

Prevent air from entering the hydraulic system. Under normal pressure and temperature, these hydraulic fittings contain 6% to 8% air by volume. When the pressure drops, the air will be released from the oil, and the bursting of the bubbles will cause "cavitation" and noise in the hydraulic components. A large amount of air entering the oil will aggravate the "cavitation" phenomenon, increase the compressibility of the hydraulic oil, work instability, reduce work efficiency, and cause the actuator to "crawl". In addition, air oxidizes hydraulic oil and accelerates its deterioration.