Typical setup for a 3/4 way 2 position way valve

3/4 way 2position solenoid valve

How to setup a 3/4 way 2 position way valve?

3/4 Way 2-Position Solenoid Valve Diagram 1

3/4 Way 2-Position Solenoid Valve Symbol

 

1. To actuate one single-acting cylinder.

Either oil port “A” or “B” must be plugged on valve. With port “B” plugged, solenoid is energized to position “A,” oil port “A” becomes pressurized. When solenoid is energized to position “B,” oil port “A” becomes the return port.

3 4 Way 2-Position Solenoid Valve Diagram 1

3 4 Way 2-Position Solenoid Valve Diagram 1

2. To actuate two single-acting cylinder.

A pressure line from one bank can be connected to oil port “A” and the other to oil port “B” on the valve. Sequence: When energized to position “A,” oil port “A” becomes pressurized and clamps the fixture connected to oil port “A”; oil port “B” becomes a “return” port for cylinder connected to oil port “B,” and retracts it. The opposite happens when solenoid “B” is energized.

3 4 Way 2-Position Solenoid Valve Diagram 2

3 4 Way 2-Position Solenoid Valve Diagram 2

 

3. To actuate one double-acting cylinder.

Port “A” is connected to “advance” port of cylinder, oil port “B” connects to cylinder “return” port. Solenoid is energized to position “A,” oil port “A” becomes pressurized to extend cylinder piston. The opposite happens when solenoid “B” is energized. Valve does not hold in “retract” position.

3/4 Way 2- Position Solenoid Valve Diagram 3

3/4 Way 2- Position Solenoid Valve Diagram 3

 

NOTE: When using more than one valve on a pump, the tank port may require a check valve to permit inadvertent, momentary extension of a retracted cylinder.

NOTE: If pump is equipped with an internal outlet check, a “hold” position can be maintained with the pump shut off