Irrigation Flashcards
1
Q
What valve is called “normally open”
A
Hydraulic valve
If hydraulic supply to valve is on, valve closes. If hydraulic supply to valve is off, valve opens.
2
Q
What valve is “normally closed”
A
Electric valve
When the current is on the valve opens, when the current is off the valve closes.
3
Q
What AC do controllers and valves have.
A
Controllers 110v AC
Valve 24v AC
