Category Archives for Proportional Electro-Hydraulic Control Valves
Yuken Proportional Electro-Hydraulic Relieving and Reducing Valves with On Board Electronics
These valves are a combination of a proportional electro hydraulic pilot relief valve and a pressure reducing and relieving valve. They can control hydraulic system pressures proportionally to the controlled input voltage. As the valves have a relieving mechanism, a … Continue reading
Yuken Proportional Electro-Hydraulic Directional and Flow Control Valves with On Board Electronics
These valves are a combination of a directional and flow control valve and a power amplifier. The flow rate can be controlled by changing an input voltage to the solenoids, and the direction of the flow can be controlled by … Continue reading
Yuken Proportional Electro-Hydraulic Relief Valves with On Board Electronics
These valves consist of a proportional electro-hydraulic relief valve, a power amplifier, and a pressure sensor. They can control hydraulic system pressures proportionally to the controlled input voltage.
Hybrid Proportional Electro-Hydraulic Control Valves
These valves contain a combination of an amplifier-integrated proportional valve, pressure sensor, and displacement sensor in order to improve the functionality and ease of use. They have a closed minor feedback loop that greatly improves pressure control linearity, hysteresis, and … Continue reading
Circuit Examples of Proportional Electro-hydraulic Control Valves
Figures 8.14 and 8.15 compare circuits equipped with the general hydraulic control valves and the proportional electro-hydraulic control valves. As is evident from the figures, the proportional electro-hydraulic control valves can generally replace many of control valves in hydraulic systems. … Continue reading
Power Amplifiers For Proportional Electro-Hydraulic Control Valves
Amplifiers serve as a drive for the proportional electro-hydraulic control valves. They convert signal voltage from a setting adjuster to a current. Then, they amplify and feed the current to the solenoid to operate the valves for pressure and flow … Continue reading
Proportional Electro-Hydraulic Directional and Flow Control Valves
These valves accommodate flow and direction control functions for an actuator. The flow rate can be controlled by changing an input current to the solenoids and the direction of the flow can be controlled by providing the current to either … Continue reading
Proportional Electro-Hydraulic Flow Control and Relief Valves
These valves facilitate energy-saving operation of hydraulic systems by supplying the minimum pressure and flow required to drive the actuators. These valves control the pump pressure effectively by responding to a small pressure difference against the load pressure. They could … Continue reading
Proportional Electro-Hydraulic Flow Control (and Check) Valves
These valves are flow control valves provided with a proportional DC solenoid on the restrictor. They can smoothly start, stop, and accelerate/decelerate the actuator through a controlled input current.
Proportional Electro-Hydraulic Relieving and Reducing Valves
These valves consist of a proportional electro-hydraulic pilot relief valve and a pressure reducing and relieving valve. They can control the system pressure continuously through a controlled input current to the DC solenoid. Because the valves have a relieving mechanism, … Continue reading