Classification and Application of the Selector Valve

As we all know, the selector valve is a valve to realize the connection, cut-off and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control. It is a directional control valve with more than two flow forms and more than two oil ports. The function of the selector valve is to change the on-off state of each oil port on the valve body by the movement of the valve core, so as to control the connection, disconnection and direction change of the oil circuit.

I. Classification of selector valve

1. According to the movement mode of the valve core relative to the valve body, the selector valves are divided into slide and rotary valves.

2. According to the different operation modes of the valve, the selector valves are divided into manual, motorized, electromagnetic, hydraulic, and electro-hydraulic valves, etc.

3. According to the number of valve core positions, the selector valve is divided into those of two position, three position and multi position.

4. According to the number of oil inlet and outlet on the valve body, the multiport selector valves are divided into those of 2 port, 3 port, 4 port,and 5 port, etc.

5. According to the different installation methods of the valve, the directional valves are divided into those of plate type, pipe type, flange type, etc.

II. Application of multiport selector valve

1. In petroleum, chemical, mining and metallurgy industries, 6 port selector valve is an important fluid directional equipment. The valve is installed in the pipeline conveying lubricating oil in the thin oil lubrication system. By changing the relative position of the sealing assembly in the valve body, each channel of the valve body is connected or disconnected, so as to control the reversing and start-up and stop of the fluid.

2. In the powder conveying industry and pneumatic conveying system, the 3 port selector valve is an important powder reversing equipment. It is installed in the conveying pipeline. The shaft baffle is adjusted by pneumatic control to change the material direction of the channel.

3. The selector valve has accurate actions, high degree of automation and stable and reliable operation, but it has a complex structure equipped with drive and cooling systems; The valve disc structure is simpler and is mostly used in the production process with smaller flow.