Hi Freddie, unfortunately if water is leaking out of the housing then

Comment on Vigoro 3015V Sprinkler Timer Internals and Valve Design by JonC.

Hi Freddie, unfortunately if water is leaking out of the housing then the seals on the internal valve have failed or if you’re in a freezing environment and they were not drained of water over the winter the plastic valve housing may have cracked.

Unfortunately these do not seem to be built for long term use as I’ve seen complaints of this type of failure on this site.

When you compare the valve on these type of sprinkler timers to a valve that is used on a commercial or in-ground home sprinkler system you’ll see that these are much smaller in size. I suspect they are limited to a relatively low number of open/close cycles in comparison to a larger and more durable valve.

The larger valves use a higher voltage and higher current power supply to open and close the valves. To make a timer this small they downsize the power supply (batteries) and the valve solenoid, as well as the valve to make it work.

If you look at this orbit valve linked below, it’s almost as big as the whole sprinkler timer. http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10051&catalogId=10053&productId=100186591&R=100186591

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