Factors to be considered in selecting butterfly va

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Factors to be considered in selecting butterfly valves

service life:

butterfly valves have been used for more than 10000 times. Now most deformation units adopt single-chip 24 bit ultra-low noise analog-to-digital converter, which can still ensure "airtightness" when closed

pressure drop:

if the pressure drop is too large, it will increase energy consumption. However, it should be known that the valve is not the only factor causing the pressure drop in the pipeline system. The following factors also cause the pressure drop. Fluid section of the pipe. Friction on the inner wall of the pipe

change of flow direction when passing through parts. The fluid characteristics of the butterfly valve are three times or even higher than that of the stop valve, and 75% of the gate valve of the same size.


the butterfly valve can control and adjust the pipeline system by looking at the product nameplate for opening/closing and throttling/balancing. Butterfly valves have better "versatility" than gate or globe valves. As the butterfly valve can adopt various surface treatment technologies and select elastic material pipes, the butterfly valve has strong chemical corrosion resistance


the installation cost of light butterfly valve is much less than that of cast iron valve: for example, a 10 inch nominal diameter butterfly valve weighs 55 pounds, while a 10 inch cast iron gate valve weighs 490 pounds. For the whole pipeline system, the installation cost saved by using butterfly valve is very considerable. In addition, the heavier the pipe system, the stronger the pipe support base is required, which makes the whole pipe system more expensive. Therefore, considering the weight of the valve, the cost of the entire pipeline system can be saved.


the space occupied by the butterfly valve is about 1/6 of that of the gate valve of the same size. Every additional cubic foot of building space means that we collect all kinds of output from customers, which means that the cost is wasted. For example, a butterfly valve with a nominal diameter of 10 inches is about 21 inches high, while a gate valve with a nominal diameter of 10 inches is as high as 43 inches

easy to operate:

the butterfly valve only needs to rotate 1/4 turn (90 degrees) from opening to closing. The gate valve and stop valve need to rotate many revolutions to change the valve from open state to closed state. Easy to open or close means that it is not necessary to employ a highly paid operator to operate the butterfly valve


the cost of a butterfly valve is usually only 40% of that of a cast-iron gate valve. Not only is the purchase cost low, but also the installation cost is relatively low


as the butterfly valve has a high six body coefficient and an elastic seat with good performance, the butterfly valve has an automatic cleaning function, reducing the possibility that the pipeline is blocked by garbage and debris

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