Reddit reviews 12 Vdc Normally Closed Solenoid Valve
We found 2 Reddit comments about 12 Vdc Normally Closed Solenoid Valve. Here are the top ones, ranked by their Reddit score.
Just A Simple Take-out 12VDC Solenoid ValveOpen/closed valve operation that is normally closed.Draws 100mA at 12VDC. Has 3/16" OD inlet and outlet at right angles to each other.Housing measures 1-3/16" long x 15/16" dia with terminals at the back end.Great for simple projects!
Ever thought of something like this: http://www.adafruit.com/products/997 with a smaller spout to limit the flow or just this http://www.amazon.com/gp/aw/d/B007D1U64E/ref=mp_s_a_1_7?qid=1373166510&sr=1-7&pi=AC_SX112_SY192 (sorry about links, on my phone).
The issue is the amount of force you need to hold back the ball in the bearing option. You will need a decent amount of current to make a field strong enough to hold that bearing up and hold the fluid back. It is doable but a complete waste of power since this thing will be off 95% of the time.
Check this out. It's not as cheap as you were hoping, but it is cheaper than what you found. For 64 of them shipping works out to about $18 where I'm at.