Any 12v DC source...hook one side to one terminal and every time you touch the other terminal to complete the circuit, the valve should open/close..
If you soak the vave in some cleaner and do the 12v intermittant hook up, that should exercize the valve ..and you will hear it and you will feel it pulsing with each sig input.

That is what my post said to do.

.but it also said to confirm the coil of the valve is good by OHM reading it ..I even gave you the OHM SPECIFICS...cuz if the coil winding is an OPEN circuit, you can clean the valve til the cows come home without it working...so , I included that as a precautionary FIRST step.

Sounds specific to me. If it is not clear to you , then maybe just go buy a new one,.

__________________
A Dalton