Check the tightness of valve regularly and deal with internal leakage in time. According to the valve operation, develop a reasonable maintenance system, such as the valve action once, can inject appropriate amount (sealing system volume 1/8) grease, to avoid foreign matter into the valve seat cavity, affect the sealing; Valves with less movement should be operated at least once a year.

Proper amount of grease should be injected during the operation to reduce the dry wear of the ball. Before winter, the valve should be fully maintained, especially excluding the moisture in the valve cavity to avoid freezing blocking; The grease in the gear drive mechanism should be replaced once a year.