I 'guess' I understand what is signal solenoid valve. Most of them are spring return with air pilot. It will move HOME position if electrical energy is off
Double solenoid valve use two solenoid. That make the cylinder (if the valve is connected to a cylinder) to stay the same position even if electrical energy is off.
Now what is three position valve?
I understand that could make 3 stages (Please tell me if I misunderstand that).
Does it has to be a double solenoid operated?
How about any specific feature of a three position valve?
How two or one solenoid make three position??
Thanks
Double solenoid valve use two solenoid. That make the cylinder (if the valve is connected to a cylinder) to stay the same position even if electrical energy is off.
Now what is three position valve?
I understand that could make 3 stages (Please tell me if I misunderstand that).
Does it has to be a double solenoid operated?
How about any specific feature of a three position valve?
How two or one solenoid make three position??
Thanks