Neptune SV-1 Solenoid Valve Question

[Ubiq]

I have a gravity fed kalk stirrer that I want to automate, so that when pH drops below a certain level, my RO/DI top-off feeds to the stirrer rather than straight to the sump. This would require that one solenoid valve be in the open position most of the time. Is the Neptune SV-1 suitable for this purpose? I've read that they get hot when energized.