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Air valves in a distribution system are provided at:
- a)Dead ends in the water distribution system
- b)Junction of main and branch pipes
- c)Summit points on water mains
- d)Places where the pressure is minimum
Correct answer is option 'C'. Can you explain this answer?
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Air valves in a distribution system are provided at:a)Dead ends in th...
Air Valve Location Basically, air valves for exhausting air should be located at points on the pipeline to which air tends to be drawn or where air tends to collect. Air valves for air intake should be located at points on the pipeline that are most susceptible to sub-atmospheric pressures.
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Air valves in a distribution system are provided at:a)Dead ends in th...
Explanation:
Air valves are provided in a water distribution system to release the entrapped air from the pipes. This air may enter the pipes due to various reasons like changes in pressure, temperature, etc. The air can cause problems like water hammer, decreased flow, and corrosion of pipes. Hence, it is important to remove the entrapped air from the pipes.
The air valves are installed at specific locations in the distribution system. The correct option among the given ones is option 'C', i.e., the summit points on water mains. This means that the air valves are installed at the highest point of the water main.
Reasons for installing air valves at the summit points:
1. To release the entrapped air: As the air is lighter than water, it tends to accumulate at the highest point of the water main. Hence, installing the air valve at the summit point helps to release the entrapped air.
2. To prevent water hammer: Water hammer is a phenomenon where a sudden change in flow or pressure causes a shock wave in the pipes, which can damage the pipes. The entrapped air can cause water hammer. By installing air valves at the summit points, the entrapped air can be released, and water hammer can be prevented.
3. To maintain the pressure: The air can create a blockage in the pipes, which can reduce the flow and pressure of water. By releasing the entrapped air, the pressure in the pipes can be maintained.
Conclusion:
Air valves are an essential component of a water distribution system. They help to maintain the flow, pressure, and quality of water. Installing air valves at the summit points helps to release the entrapped air, prevent water hammer, and maintain the pressure in the pipes.
Air valves are provided in a water distribution system to release the entrapped air from the pipes. This air may enter the pipes due to various reasons like changes in pressure, temperature, etc. The air can cause problems like water hammer, decreased flow, and corrosion of pipes. Hence, it is important to remove the entrapped air from the pipes.
The air valves are installed at specific locations in the distribution system. The correct option among the given ones is option 'C', i.e., the summit points on water mains. This means that the air valves are installed at the highest point of the water main.
Reasons for installing air valves at the summit points:
1. To release the entrapped air: As the air is lighter than water, it tends to accumulate at the highest point of the water main. Hence, installing the air valve at the summit point helps to release the entrapped air.
2. To prevent water hammer: Water hammer is a phenomenon where a sudden change in flow or pressure causes a shock wave in the pipes, which can damage the pipes. The entrapped air can cause water hammer. By installing air valves at the summit points, the entrapped air can be released, and water hammer can be prevented.
3. To maintain the pressure: The air can create a blockage in the pipes, which can reduce the flow and pressure of water. By releasing the entrapped air, the pressure in the pipes can be maintained.
Conclusion:
Air valves are an essential component of a water distribution system. They help to maintain the flow, pressure, and quality of water. Installing air valves at the summit points helps to release the entrapped air, prevent water hammer, and maintain the pressure in the pipes.
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Air valves in a distribution system are provided at:a)Dead ends in the water distribution systemb)Junction of main and branch pipesc)Summit points on water mainsd)Places where the pressure is minimumCorrect answer is option 'C'. Can you explain this answer?
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