Can imported ball valves be used as throttling devices
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The outlet of the reaction feed pump in the hydrogenation unit is equipped with a reflux control valve, which is used to prevent the pump flow rate from becoming too low during startup and shutdown. Recently, this control valve has been opening unintentionally, resulting in instantaneous interruptions in the reaction feed. Is it possible to use the gate valve located before it (the inlet ball valve) for throttling, in order to avoid such interruptions?
After the pump, it’s possible for the backflow to decrease, and thus some of the fluid goes into the reaction vessel; before the pump, this isn’t possible, as the pump may fail to operate or suffer from cavitation
It can be used, but multiple trials are required to adjust the valve to a more ideal position.
Can a stop valve or an antibiotic valve be used? Ball valves are not convenient for regulating flow.
Ball valves are generally used for on/off control and are not recommended for throttling. It depends on the structure of the valve, and it does not have different uses depending on whether it is imported or domestically produced. This post was last edited by zxz017 on 2007-7-24 12:11.]
It is not necessary to use a full-bore ball valve; a V-ball valve offers better throttling performance, or a globe valve can be used instead
It’s also possible; using a ball valve for throttling doesn’t yield significant results, so it can be replaced with a globe valve.
Using an outlet valve to regulate the flow rate of a liquid pump is the correct approach, as it can reduce power consumption. When in use, a ball valve operates in a fully open or fully closed position, resulting in the least resistance to fluid flow in the pipeline. Due to the shape of its ball valve core, it is not suitable for use in regulation; under the impact of the fluid, the sharp edges at the opening of the ball can be damaged, resulting in internal leakage when the valve is closed. Therefore, ball valves should not be used for throttling control at the pump outlet. (For reference)
For throttling, ball valves are generally not used; we use throttle valves for this purpose, or globe valves work as well. Ball valves are not recommended
Generally used for switches; not recommended for throttling