Water Hammer with sprinklers

[justgetyourdog]

After installing a sprinkling system, I noticed water hammer problems. Upon investigating, the water hammer occurred only on certain circuits of my sprinkling system. With further research I learned that water hammer typically occurs when a valve shuts off too quickly. I am confused however, because the water hammer occurs at the start up of my valves suggesting that perhaps the hammer is caused by a valve opening too quickly. I dont know?FYI: I have Weather Matic 12000 series valves.Any help would be greatly appreciated — nw

[Nate Welch]

: After installing a sprinkling system, I noticed water hammer problems. Upon investigating, the water hammer occurred only on certain circuits of my sprinkling system. With further research I learned that water hammer typically occurs when a valve shuts off too quickly. I am confused however, because the water hammer occurs at the start up of my valves suggesting that perhaps the hammer is caused by a valve opening too quickly. I dont know?: FYI: I have Weather Matic 12000 series valves.: Any help would be greatly appreciated — nw Hydraulic shock waves ( water hammer) can burst your water piping. This action is caused by quick closing solenoid valves. Washing machines, dish washers and Sprinkler shut offs.. Try to get the sprinkler installed BACK to install a slow closing valve. If he/she refuses you may have to instal a shock asorber ( air chamber) god luck. Dont wait to long as a water hammer condition can cause serious piping damage. Respectifully Sylvan

[Nate Welch]

: After installing a sprinkling system, I noticed water hammer problems. Upon investigating, the water hammer occurred only on certain circuits of my sprinkling system. With further research I learned that water hammer typically occurs when a valve shuts off too quickly. I am confused however, because the water hammer occurs at the start up of my valves suggesting that perhaps the hammer is caused by a valve opening too quickly. I dont know?: FYI: I have Weather Matic 12000 series valves.: Any help would be greatly appreciated — nwin your case it sounds like the system section is draining down when off through the lowest head and when the valve opens quickly the water rushes in and slams end of run causing hammer.one solution may be a spring loaded check valve just before low point which would hold water in pipe during off time. A slow opening valve of course would solve problem, if they are available.

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