Here are some ideas: 1. temporary, but might help or alleviate the problem. If you have an outside water spigot attach a reliable leak-free standard garden hose with a shut-off nozzle to the spigot. Turn the spigot on half way or more. Run your automated sprinkler system. When the valves turn off, the pressure shock that causes the hammer will be absorbed by the hose. It is more effective if the spigot is close to the valves. This may be a temporary solution depending on the degree of the problem. Some people leave pressure on their garden hoses all the time, but I think it is better if you don't. 2. A more permanent fix is to install a pressure regulator before your arrestor. Higher water pressure will accentuate water hammer. After installing a pressure regulator, you may still need to add more surge arrestors. If you can't install a pressure regulator, or if you need the pressure, you'll just have to add more surge arrestors or larger arrestors (make your own using a 4 ft capped copper pipe). hope this helps,

I guess I lucked out when it came to experimenting with plants. I was living with my parents when I started really getting into gardening and my mom gave me permission to experiment with their garden while I was there. It was a win win stituation for both of us. I got to try all kinds of neat new plants in their already established flower beds and they got free help in the garden as well as free (to them!) new plants. That would be how I got mom hooked on crinums when I brought the first few plants back from a swap. They still get free plants from me when I go to swaps or thin plants in my own garden. But then again I also get free plants from them when they are thinning their garden. Just a week ago they gave me several dozen baby coonties they discovered around an adult coonties that they had to move. After I bought my own house I had already learned a lot from my parents garden, including limiting the size of the flowers beds. One thing it took me a few more years to learn was about pushing the zone limits on certain plants. One plants that stands out was the large white bird of paradise that I just had to have even though I knew I was too far north for it. After several years of watching it die back to the ground again and again I fionally accepted reality and replaced it with something that will hopefully do better. I still occassionaly push the limits on certain plants, my currant favorite being my lions tail, but usually I only protect one or two plants from frost and the rest have to fend for themselves. To survive in my garden they have to be able to make it through both summer and winter with little intervention from me! If the plant doesn't make it then it just wasn't meant to live in my yard is now my garden philosophy! This year has been the exception in that I have covered a bunch of plants during the last couple freezes even though I know that all of the plants that I covered would come back if the frost did get them. It's just so many things had started blooming and I really wanted to protect the blooms. Every year I try several new and unfamilar plants in the garden and this year will be no different. I've already cleared a couple good sized areas in the front bed relocating or just getting rid of some plants that just weren't working out and it's my hope to find something unusual to try this weekend at the plant sale!

You could have the area ground down.

Hi all, In a major renovation, we replaced most of our old plumbing, and, added a new floor with new plumbing. The water hammer took about 2 weeks to show up. It only occurs when faucets are shut off quickly. Our plumber [after ripping open some walls to look for loose pipes (!?!)] installed a pressure reducing valve where the water enters the house. He claims it took the pressure from ~130 to ~60psi. No help. Then he added a large hammer arrestor just inside that valve. Nope! Then he installed smaller hammer arrestors under each sink & behind the washer. Still no luck... I read that ceramic-valve faucets can cause water hammer due to the abrupt shut off. Interestingly, our 2 "old" upstairs ceramic faucets now cause water hammer, but the same faucets didn't when we had only a single story house. We have 2 Takagi tankless water heaters mounted outside the house. The plumber thinks they must be responsible for the hammer. Any other suggestions? Thanks, Pableau