My home was built in the late 60's and I recently put in a new Lawn Sprinkler system and when any of the automatic valves close I get a loud thump or Bang.
Can this pressure change or thumping put un-do stress on other plumbing components?
Can I eliminate or diminish this affect?
Some details: The main line from the water meter is 1" and then the feed drops to 3/4" in the house, garage, and splits to the water heater and cold supply and then feeds 1/2" pipes to the fixtures. The line to the sprinkler is 3/4", from the main cold, hot, split to a 3/4" Ball Valve, then 70ft though the house, then to an exterior hose bib, then to another 3/4" Ball Valve, then the 3/4" sprinkler manifold, there are no other feeds from this line. All copper, I do not have a pressure regulator or an expansion tank.