Has anyone used this oil filling hole on the ball valve?
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As mentioned, I have never had oil in this oil hole before. Is there any expert who can share the experience of refueling? Also, is the one directly above the right side an exhaust hole?
The oil filling hole on the ball valve is usually used to add lubricating oil or cleaning agent to the inside of the valve body. If you have never added oil, it may be because the ball valve itself is designed to lubricate itself during use, without the need for additional oil or detergent. Regarding refueling experience, if the ball valve needs to add lubricating oil or detergent, the specific adding method and frequency will generally be marked on the ball valve. You can refer to the ball valve manual or consult the ball valve manufacturer's technical support to learn how to perform the oil filling operation correctly. As for whether the hole directly on the right is a vent, the specific situation may depend on the ball valve model you are using and the manufacturer's design. Some ball valves are designed with vent holes on the valve body to remove gas or air from the pipeline. If you are unsure, it is recommended to consult relevant technical information or contact the manufacturer to confirm its functionality. .