Four fastening screws included, M5x45mm long. White label with no logo for OEM manufacturers. Weight = 3.6 lbs (1.62 kg). Shifting type: automatic spring return or detent to hold until force applied to lever. C: Closed center spool: all ports blocked when centered.
Useful to switch actuator directions and to fully stop cylinder or motor when centered. Make sure there is a relief valve to protect overrunning loads from spiking the pressure during sudden stops when centering. Note that there is some leakage of oil across the spool in the center position and slow drifting of the actuator could be possible.M : Motor spool, A and B ports to tank and P port blocked when centered. Motors and cylinders will coast to a stop when centering. Actuators will move freely from external forces when the valve is in the center position. Adding an A&B port P. Check valve under this valve will ensure a positive stop and hold the position of a motor and cylinder for longer durations than with just a closed center spool valve C.
AC: Pressure to A port and B port to tank in neutral position. In the normal position pressure goes to the A port and the B port goes to tank. When lever shifted, Pressure directs to B port and A port to tank. During transition between spool positions all ports are blocked. All Ports Open to Tank in Normal Position.In the normal position all ports are open to tank. Shifting the lever sends pressure to the B port and A port to tank. M Spool: A and B ports closed and P to T in center position. Actuators will stop in center position and the supply pressure will be directed to tank. Commonly used with fixed displacement gear pumps so pressure can flow direct to tank and not build up heat by blowing across a relieve valve as would be needed with the M and C spool.
Open Center Spool: A, B, P and T ports connected in center. Actuators will freely move when valve is de-energized, and spring centered. Pressure and all ports will drain to tank.
Energize solenoid "a" and "b" to change direction of actuator. R: Regeneration Spool: Closed ports in spring center position.
When "b" side shifted the rod side of a cylinder will connect to the piston side combining the flows for a higher speed extension of the cylinder. Actuator will stop in the center position.
When "a" side is shifted, Pressure will go to the B port (typically rod side of cylinder) and the A port (typically piston side of cylinder) will go to tank for retracting the cylinder. When the "b" side is shifted the rod side and piston side are connected to pressure in regeneration, creating a higher extension flow. Note the extend for will be reduced by the area of the rod. Mounting Pattern of mating surface (mm).
High volume OEM series production available per request. Thousands in use in various applications.