Select Valve need to consider what factors

 Butterfly valve in the use of more than 10,000 times, still be able to ensure the closure of "airtight."

      Pressure drop:

     If the drop is too large will increase energy consumption. However, it should know that the valve pressure drop is not a pipe system to produce the only factor, leading to production of pressure drop are the following factors. Fluid pipe cross-section. Pipe wall friction. When the flow through the components change. The fluid characteristics of butterfly valve is equivalent to three times or more, equivalent to the same size of the valve of 75%.

      Versatility:

      Butterfly through the on / off and throttling / balancing of the pipeline system to control and regulation. Compared with the valve or globe valve, butterfly valve has a better "universal nature." As the butterfly valve can be used a variety of surface treatment technology and choice of elastic material pipeline, so butterfly valve has a very strong chemical corrosion resistance.

      Weight:

      The proportion of light valve, which costs more than savings-type cast iron valve: for example, a nominal 10-inch diameter butterfly valve weight 55 pounds, while a 10-inch cast iron gate valve weight as high as 490 pounds. For the entire pipeline system, the adoption of butterfly valves of the installation cost savings is very significant. In addition, the more serious the pipeline system would require the pipe support base is stronger, leading to the entire pipeline system more expensive. Therefore, taking into account the weight of the valve, we can save the cost of the entire pipeline system.

      Size:

      Butterfly the amount of space is about the same size gate valve 1 / 6. And for each additional cubic feet of building space, it means that the cost of waste. For example: DN 10-inch butterfly valve is about 21 inches high, 10 inches nominal diameter of the valve is as high as 43 inches.

       Tightness Close:

      Valve and closing valve (metal to metal connections) do not have the airtight closure of the seat performance.

      Easy to operate:

      Butterfly valve from opening to closing only need to rotate 1 / 4 turn (90 degrees). The valve and valve need to rotate many times in order to be turned into the valve from the off. To open or close the user-friendly means that wages are too high do not need to hire operators to operate the valve.

      Cost:

      The cost of a butterfly valve is usually only 40% of cast iron gate valves, not only to buy low-cost, but installation costs are relatively low.

     Maintenance:

      As the butterfly valve high performance of the six numbers and a very good system, the flexibility of the valve seat, the valve has a self-cleaning function, reduce the pipeline has been the possibility of blocking junk junk. 

  

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