As shown in the figure, the solenoid valve is A on the left and B on the right.
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When the solenoid valve operates, the electrical state T and AB are connected and P is disconnected. A gets power through AP and BT. If B has power, BP can be connected, but AT can be connected?
This post was last written by feng* Edited by aosa on 2022-12-26 14:20 Yes. In the non-energized state, T and AB are connected, but P is disconnected. A gets power through AP and BT. B gets power, BP is connected, AT is connected. Electrically controlled, pilot-operated, self-resetting, neutral pressure relief, dual-control three-position four-way valve.
It shouldn't be A getting power. Looking at the picture on the left, it means BP is connected and AT is connected. If B gets electricity, look at the picture on the right, AP is connected, BT is connected? I don’t understand. Please give me some advice.
The accurate description should be: This is a three-position four-way valve. The three positions are the middle position, the left position (A position), and the right position (B position). When in the middle position, T is connected to A and B. ； P doesn't make sense. When in the left position, T and A are connected ； P and B are connected. When in the right position, T and B are connected ； P and A are connected. If it is a solenoid valve, which position it is in depends on which coil is de-energized and which coil is de-energized. ； If it is a pneumatic valve, it depends on which side is inflated or deflated.
Does that mean that when A is powered and B is de-energized, the spool moves to the right and is in the right position? Looking at the picture on the right, when B is powered and A is de-energized, it is in the left position?
This post was last edited by xxkhc on 2022-12-27 16:28 This is a three-position four-way directional control valve. The middle position represents the state of A and B when they are not energized. As you said, the left is A and the right is B. Then A is in red state when powered on. B is blue when powered on.