Selection valve function and a major factor in the piping system

I. Selection



Pipeline system in the building, the fluid control valves play a role. Due to the different structures and materials, so the valve will create varied.



In order to ensure the pipeline system to achieve the highest efficiency, lowest cost and longest life, the correct selection of valves is essential.



Second, functional



Valve has four main functions:



1. To start and stop media flow



2. Adjustment (expenditure) medium flow



3. To prevent backflow or back to



4. Regulation or discharge fluid pressure



Third, a major factor in the piping system



1. Pressure



2. Temperature



3. Fluid medium type



A) fluid



B) gas: for example, steam or air



C) impurities or abrasive (erosive substances) content



D) corrosion



4. Medium flow



A) Open - Close-conditioning



B) the need to prevent backflow or back to



C) concern about the pressure drop



D) flow



5. The working environment



A) condensation



B) operating frequency



C) accessibility



D) size / space by the application of



E) manual or automatic control



F) the need to close the performance with no bubbles 

 

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