Water Hammer Irrigation System In House

The water enters the house through a metre in the basement.
Water hammer irrigation system in house. It also discusses the difference between water hammer and air in the pipes. I had a drip system put in and it was run as so. When the system is turned on the water behind the air bubble will speed up the air will run out of the system and the result will be water hammer. Air in the system can contribute to water hammer as it can travel at a higher velocity than water.
If you hear the noise when the valves close if it occurs when the pump starts or if you hear rapid. Even the best designed system can have air inside it. Two guys were working full time just repairing the pipe breaks. You can use three criteria to tell the difference between air in the pipes and water hammer.
They had tried for months to fix it and numerous irrigation equipment salesmen had checked it out. Drip irrigation water hammer. Our house is on city water with a psi about 78 at the street and a bit lower in the house. Meter to house 3 4 copper after the house ball valve a t leading to another ball valve for 1 pvc water line that feeds 4 zone valves.
Many years ago i was called in to consult on a large high school irrigation system that was having water hammer problems. The water runs up from the metre to near the basement ceiling and turns 90 degrees to run below the ceiling all in 3 4 copper pipes. Water hammer is a noisy annoying condition that can happen in sprinkler system and indoor water pipes. Two of thses zones are about 2 feet from the 2nd ball valve.
The water hammer was literally blowing apart the system. This article discusses both the diagnosis of and how to fix water hammer.