Commonly called 2/2 (2 way/2 position) valves, the normally closed solenoid valve has 1 inlet and 1 outlet that allows installation into a pipe and will shut off the fluid within it. Normally closed refers to the valve being closed when no power is presented to it and conversely requires a voltage to energise the coil in order for it to remain open. Available in sizes between 1/2″ (15mm) and 3″ (80mm) requiring a 230VAC supply (other voltages are available).
Ideal for applications where there is an intermittent requirement to open and close the valve to allow water to flow is needed. This could be in respect of a process that needs water on demand such as a vending machine or when water is not required if nobody is present, such as in an office WC area.