Information AboutWater Hammer |
| CATEGORIES ABOUT WATER HAMMER | |
| water | |
| plumbing | |
| irrigation | |
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or For this reason, most pipe-sizing charts recommend keeping the flow velocity at or below 5 to water systems to provide a cushion to absorb the force of moving water in order to prevent damage to the system. (At some Hydroelectric Generating Stations what appears to be a water supply tank is actually one of these devices.) The water hammer principle can be used to create a simple water Pump called a Hydraulic Ram . On the other hand, when a Valve in a pipe is closed, the water downstream of the valve will attempt to continue flowing, creating a vacuum that may cause the pipe to collapse or Implode . This problem can be particularly acute if the pipe is on a downhill slope. To prevent this, air and vacuum relief valves, or air vents, are installed just downstream of the valve to allow air to enter the line and prevent this vacuum from occurring. In the home water hammer often occurs when a Dishwasher , Clothes Washer , or Toilet shuts off water flowing into the machine, resulting in a loud bang or banging sound. A Hydropneumatic Device similar in principle to a Shock Absorber called a Water Hammer Arrestor can be installed between the water pipe and the machine which will absorb the shock and stop the banging. Steam heating systems for buildings may also be vulnerable to water hammer. In a steam system, water hammer most often occurs when some of the steam condenses into water in a horizontal section of the steam piping. Subsequently, steam picks up the water, forms a " Slug ", and hurls it at high velocity into a pipe elbow, creating a loud hammering noise and greatly stressing the pipe. This condition is usually caused by a poor condensate drainage strategy. |
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