Category: Flow Control Valves

Pressure-Compensated Valves

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Pressure-Compensated Valves

Pressure-compensated flow-control valvesovercome the difficulty causedby non-pressure-compensated valves by changing the size of the orifice in relation to the changes in the system pressure. This is accomplished through a spring-loaded compensator spool that reduces the size of the orifice when pressure drop increases. Once the valve is set, the pressure compensator acts to keep the […]

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Non-Pressure-Compensated Valves

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Non-Pressure-Compensated Valves

Non-pressure-compensated flow-control valves are used when the system pressure is relatively constant and motoring speeds are not too critical. The operating principle behind these valves is that the flow through an orifice remains constant if the pressure drop across it remains the same. In other words, the rate of flow through an orifice depends on […]

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Pilot Operated Flow Control and Check Valves

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Pilot Operated Flow Control and Check Valves

These valves are pilot-operated. They control the flow with a hydraulic cylinder to accelerate or decelerate the actuator without shock. Other flow control valves described below are available • Flow Control and Relief Valves These valves contain a flow control valve and a relief valve, the combination of which achieves a pump discharge pressure almost […]

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Yuken Feed Control Valve Released in 1965

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Yuken Feed Control Valve Released in 1965

Features 1. Provides seamless feeding speed control in two modes (regardless of the cutting resistance and the fluid temperature) 2. Very compact, compared to previous feed control valves. 3. Can be easily mounted/demounted with gaskets. 4. Allows direction switching to be made either with a solenoid pilot or manually. Specifications Max. Press.: 7 MPa (1 […]

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Feed Control Valves

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Feed Control Valves

These valves are a combination of a flow control and check valve and a deceleration valve; they are used mainly for feed control of machine tools. Switching from rapid traverse to feed is made by a cam operation, and the feed speed is controlled with a flow control valve. Rapid return is free of cam […]

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Deceleration Valves/Deceleration and Check Valves

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Deceleration Valves/Deceleration and Check Valves

These valves continuously regulate flow rates, using a cam mechanism. Pushing the spool down decreases the flow rate for the normal open type and increases it for the normal close type. When the normal open type is installed to cushion the cylinder piston, accurate stroke end control is difficult. In this case, the restrictor and […]

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Flow Control Valves/Flow Control and Check Valves

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Flow Control Valves/Flow Control and Check Valves

These valves consist of a pressure compensator (pressure reducing valve that keeps the pressure difference constant) and a restrictor. They maintain a constant flow rate, independent of the inlet-outlet differential pressure. Provided with a sharp-edge orifice, they can also work regardless of fluid temperature or viscosity. In a circuit where the flow rate is regulated […]

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Yuken Restrictors/One Way Restrictors

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Yuken Restrictors/One Way Restrictors

These valves regulate flow rates in hydraulic circuits. They have the advantages of plain structure, simple operation, and wide range of adjustment. On the other hand, they cannot accurately control the flow; even through the fixed restriction, the flow varies with the inlet-outlet differential pressure and the fluid viscosity. Therefore, these valves are placed where […]

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Gear-Type Flow Divider Valve

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Gear-Type Flow Divider Valve

The gear-type flow divider valve works like two hydraulic gear motors with attached shafts. The both motor must have to run at the same speed since their shafts are attached. Thus, the same flow goes through both sides. The flow is equally divided and the cylinders actuator extends simultaneously. Gear-type flow divider has a pressure […]

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Hydraulic Flow Control Valves

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Hydraulic Flow Control Valves

A hydraulic flow control valve is a device used for adjusting or manipulating the hydraulic oil flow rate. The hydraulic flow control valve constructs of a flow passage or a port whose flow area can be varied. Most common applications of flow control valves in hydraulic systems are in controlling the hydraulic oil flow rate […]

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