Three-Position Spool Valve Symbol Let's look at a 3-position valve. With this 3-position valve, the black middle flow box shows the flow path when the NEITHER actuator is active, and the springs are holding the valve in the middle position. We should only count the ports in a single box once per symbol. For example, in the 3-position valve, there are three boxes that show the three possible positions, but the valve has five physical ports. So, the valve will be called a 5/3 solenoid valve. Watch

How to Read a Spool Valve Schematic Drawing ▶ Check out the full blog post over at https://realpars.com/spool-valve-schematic/ In a previous RealPars video, we learned about what a spool valve is and how it works mechanically. In this video, we will continue this theme and learn about how a spool valve is represented in engineering and manufacturers drawings, how to understand what the spool valve schematic drawing means and how it relates to the operation of a valve. #RealPars #PLC #ElectricalE