NC solenoid valve is always open with water

[KarolR]

NC Mec-Fluid2 MF-B0829 solanoid valve is O.K. with air (i test it with my mouth), and passes tap water regardless of current.
I open the water tap slowly, the solanoid passes the water immediately, even at the lowest stream. i them energize the coil-a slight stop and the water continues to flow through the valve.
It doesn't become NO, it just doesn't react to current.

 

[LittleInch]

Then it's broken.

Get another one.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.