What is a selector valve?
i. A hydraulic flow-control valve to direct pressurized fluid into one side of actuator and, at the same time, direct return fluid from the other side of the actuator to the reservoir.
What are the two types of selector valves?
There are a considerable number of different types of selector valves available with many industries or specific applications utilizing custom designed variants. Most, however, fall into a couple of basic categories, such as rotating spindle, piston, or dual-position ball type valves.
What is double selector valve?
Double Selector Valves, Six Port, Two Positions (DS and MDS): Directs the flow of hydraulic fluid to two separate hydraulic circuits. Allows operation of two double acting cylinders with one four-way control valve or four single-acting cylinders with two three-way control valves.
What is a 4 way hydraulic control valve?
Four-way, directional-control valves are used to control the direction of fluid flow in a hydraulic circuit, which controls the direction of movement of a work cylinder or the rotation of a fluid motor. These valves are usually the sliding-spool type.
What’s a 3-way valve?
A 3-way ball valve works by turning the handle, which rotates a ball in the valve body, to align the cut-out channels in the ball with the inlets and outlets of the valve. The “L” shape cut-out of the ball on an L-port valve sends fluid through 90 degrees from one port to another.
What is a control valve used for?
A control valve regulates the rate of fluid flow as the position of the valve plug or disk is changed by an actuator. Control valves are used to maintain a process variable as close as possible to the desired set point. Controller set points are typically flow rate, pressure, and temperature.
What does a one way valve do?
A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.
What’s a 3 way valve?
What is selector valve in hydraulic system?
A selector valve is used to control the direction of movement of a hydraulic actuating cylinder or similar device. It provides for the simultaneous flow of hydraulic fluid both into and out of the unit.
What is the difference between a 3-way and 4-way valve?
A 3-way valve allows fluid flow to an actuator in one position and exhausts the fluid from it in the other position. Some 3-way valves have a third position that blocks flow at all ports. A double-acting actuator requires a 4-way valve. A 4-way valve pressurizes and exhausts two ports interdependently.
What is a 3-way hydraulic valve?
A 3-way control valve shuts off water flow in one pipe while opening water flow in another pipe. In a modulating or 3-point floating application the valve can also mix water from two different pipes into one pipe or divert water from one pipe into two different pipes.
How does 4-way valve work?
A 4-way valve pressurizes and exhausts two ports interdependently. A 3-position, 4-way valve stops an actuator or allows it to float. The 4-way function is a common type of directional control valve for both air and hydraulic circuits. A 3-position, 4-way valve is more common in hydraulic circuits.
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