I installed this valve as a replacement for an older Water Master valve (same design, different name). The original valve had two stainless steel reenforcing bands to help retain the top, and it was quite sturdy. It lasted two or three years, but unfortunately the manufacturer has found that he can save a few cents by leaving out the steel bands, so now the retaining screws press directly on the soft plastic of the case. The new valve will not shut off completely, and there is a small but constant flow of water through the sprinkler system, and eventually the ground gets saturated and water puddles around the sprinkler heads. I've never had a problem with Rain Bird valves in 30+ years, and obviously I should have known better than to buy the cheap Orbit stuff that HD was pushing--you get what you pay for. From now on, I'll stick with what I know works.