about waterhammer in pipes?

Question

what is it effect on pipe &pressure chart of the the phenomena and how can avoid it?

Answer 1

If its during the construction phase of a project or during a remodel, it is also very easy to fix. Usually, plumbing to a toilt or sink come up from the crawl space, floor slab, or basement. insteading placing an elbow and turning out the wall, you place an in-line "tee". The branch of the tee goes out the wall to the stop cock and then on to the toilet or sink. on the top of the tee still in the wall, place 6 or 8 inches of pipe and cap off the top of it. this too will cause an air pocket to dampen the effects of sudden changes in flow.

Answer 2

Waterhammer happens when water gets some momentum and a valve is suddenly shut. The entire pipe full of water has to stop very quickly and develops a high pressure ... sometimes bursting pipes. You can avoid it by turning valves off slowly. Hydroelectric plants have to be very aware of water momentum. Pressure relief valves are installed to prevent both water hammer and the opposite effect of the water causing a vacuum on the other side of a valve. Some pumps use water hammer to deliver water to a high elevation when there is only a small drop in a stream. The pumps get the water moving, then shut off a valve quickly. The high pressure water gets directed through a check valve and up to a tank.

Answer 3

Water hammer is result of water flowing through pipes suddenly coming to a stop as in a quick closing valve. Slow closing valves are one way and arrestors are another. The pressure is a function of the velocity of the water and length of the pipe. But can be many times the system pressure and can cause overpressure damage to piping.

Answer 4

You can get an arrestor. Essentially the arrestor consists of a diaphragm and an air space. The air space gets compressed and acts as a damper for the sudden change in pressure or current.