Category Archives for Flow Control Valves
A poppet valve consists of movable poppet which closes against a valve seat. The inlet pressure will hold the valve on closed position. The poppet will open if the poppet stem is applied by a small force. The poppet stem … Continue reading
Hydraulic flow divider valve is used to synchronize two actuating unit. A flow divider divides a single flow stream into two equal streams so each actuator receives the same flow rate. The figure above showed a flow divider valve in … Continue reading
Orifice Check Valve is used on a fluid system which needs normal operation speed on one direction and reduced speed in other direction. The figure above shows orifice check valves schematic.
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 type and variable restrictor. Variable restrictor is made from a modified needle valve; the valve … Continue reading
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 instead of disk on globe valve. Needle valve is suitable to use as a throttle … Continue reading
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 in practice the leakage in control valve will allow the cylinder to creep. Check valve … Continue reading
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 force/torque on hydraulic rotary actuator. Hydraulic relief valve consist of to two main sections: 1. … Continue reading