Hydraulic Valves

When modeling a proportional or servovalve for subsequent simulation, output data for flow metering and leakage are steady state. As such, they are arranged similar to those that would be collected during testing a real valve, such as an automated data acquisition system. Figure 1 contains the flow metering and land-to-land leakage data over the spool position range of ±100% for the valve model from previous discussions....More

Proportional valves are fantastic—they can provide infinitely variable hydraulic flow or pressure control to facilitate accurate control of actuators. From Wal-Mart to Bloomingdales, so is the range of proportional valves available. Last month, I discussed the basics of what is available. This month, I discuss how to apply them....More

Fluid motor flow divider...More

Backpressure check valvesC...More

Valve cartridges provide only the internal moving elements of the valves. A cavity in a manifold or some other machine element serves as the body....More