inside a cheap eBay solenoid water valve.

Another random item from eBay's huge array of useful industrial components from the orient. This time it's a 12V DC solenoid operated water valve. This one has the bonus features of an easily removable filter screen and a one-way anti-backflow valve.
As with most of these components I'd suggest not using them in a mission-critical application or where failure could cause an expensive flood. But for prototyping and testing designs these common components are a good option.

If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm