SMC 1/4" solenoid valve amps

I was wondering how many amps or watts does the solenoid draw when open?

-Thanks

it draw 4.5A…

Thanks,

Is that max amp draw? Cause I was being impatient so I wired up a 1 amp diode so I can operate it from two separate switches and it works fine.

yep i think thats the max amp draw

Any idea of what may cause it to reach the max amp draw?