Hydraulic restrictor valve is used to reduce the fluid flow rate which decreased the actuator speed movement. There are two main type of restrictor, fixed…
Category: Hydraulic Valves
Needle valve has the same working principle with globe valve; the most obvious different is needle valve uses long tapered point at valve stem end…
Hydraulic pressure regulator is typically called unloading valve. There 2 main parameter on the unloading valve, there are opening pressure and closing pressure. For example,…
The figure above illustrates a pressure controlled sequence valve working principle. The spring tension which holds the piston can be adjusted to obtain opening pressure.…
On large hydraulic valve the force needed to operate the valve also increases. If the force is too large for solenoid or manual operation, then…
According to the schematic above the cylinder should remain in its position when the control valve is in its center position or off position. But…
Hydraulic relief valves are one of pressure control valve type. Hydraulic relief valve has many functions such as giving overload protection or to limit the…
A diagram of the double flapper nozzle is shown in Fig. 11.10. Supply pressure (the setting of the relief valve or the setting of a…