I have a washing machine that requires manual filling from the sink through an inlet hose. If you forget about filling it, the machine will overflow.
I would like to add a timer valve like the ones used in home irrigation, similar to this: http://www.homedepot.com/p/Melnor-Mechanical-Water-Timer-480-616/100659515
Unfortunately, these timers are in the order of minutes or hours rather than seconds. Is it possible to modify the timer to count down in seconds?