Which control valve has more accurate flow control?
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After field inspections by many manufacturers, it was found that general flow control valves are not accurate when operating at small flows, and internal leakage usually occurs. I would like to know which domestic manufacturers can do a better job in this regard.
Is there any regulating valve that doesn’t leak? The regulating valve is just a type of throttling component. Generally, the leakage level of the regulating valve is only Class V and Class VI. Besides, the regulator that controls the regulating valve still operates when the flow is small, so if you want to cut off, it is recommended that you add a shut-off valve. Many people want to use the regulating valve as a stop valve. This is a misunderstanding: L
I think the single-seat regulating valve made by Sichuan Instrument can solve this problem. The diameter of their valve core can be 6mm. It has been used in our company's original additive feeding pipeline and the effect is very good. The sealing level of the regulating valve is not as high as that of the cut-off valve. It is difficult to achieve no leakage, but it can still be used for flow control. If you want to cut off, you still need to consider the cut-off valve.
Try to avoid operating the regulating valve under small flow conditions. First, it will not be controllable, but it will be harmful to the valve. You can choose a valve with a small flow capacity. If the flow is sometimes very large and sometimes very small, you can consider using split-range adjustment.
Samson's control valve is very good. . . . The control is relatively precise: victory:
Your regulating valve has a chain, so you should pay attention when selecting it. You can choose a soft seal, but in that case, the pressure level will be limited.
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From the perspective of the form of the valve, you can choose products with larger adjustability, such as V-shaped ball valves, which also have good shutoff performance.