What is an automotive spool valve?

A spool valve is part of a hydraulic system that directs the flow of hydraulic fluid. The valve is made up of spools that rotate or slide to block and open channels in a hydraulic system.

What is pneumatic spool valve?

Pneumatic spool valves are used as directional controls within pneumatic circuits controlling single and double acting actuators or as part of a pneumatic logic sequence.

How does a spool work?

A full spool replaces the carrier, spider, and sides gears. The spool’s ring flange bolts onto the ring gear. So, the ring and pinion do their job, redirecting torque 90 degrees from the driveshaft to the wheels but the housing has lost its ability to differentiate wheel speeds between the wheels.

What are spool gears?

Spools. A spool is carrier setup that turns both wheels on an axle the same speed as the ring gear. Spools are lousy on pavement because there is no differential action, and they eat tires (especially if you ever turn corners . But you can always count on power to both wheels. Spools are common in drag racing.

What is a spool rear axle?

A spool is one solid part that replaces all components of a differential. The 10 Bolt spool fits the GM 10 Bolt Rear End. A drag racing spool will always turn both axles at the same speed with an equal amount of force. Due to the simplistic design, it is much stronger and lighter than any differential.

Is a spool valve a rotary valve?

Rotary Spool valves, so-called because it is the rotational movement of a spool that opens or closes a fluid passage. Rotary spool valves are normally manually operated and used for all small flow rates at low pressures.

Where is the spool valve located?

The spool valve is to the left of the front side valve cover – just above the alternator hence all the oil you see on your alternator and down the front side of the engine.