OK Dianne... Assuming you have only ONE valve and not a master valve, the valve you have is a slow closer. MOST valves close in 1 to 5, or 6 seconds, but I've seen a lot of them take considerably longer. The lesser the amount of water passing thru' valves, i.e., only a head or two on that perticular zone, the longer they can take to close. Is this your case? A flow control often stops this problem if the valve has one.... If the amount of water and time bother you, get a complete valve top WITH a flow control if it isn't already there and replace it. It's really a judgement call. If you DO get a new valve top, crank down on the FC until the sprinkler heads' flow drops just a little. This also helps control fogging, which also wastes considerable water... especially here in Az.... It also lessens the closing time of valves.
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