Directional control valve classification

Directional control valve classification

(1) According to the flow direction of the fluid in the pipeline, if only the fluid is allowed to flow in one direction, such a valve is called one-way control valve, such as one-way valve, shuttle valve, etc; The control valve that can change the flow direction of fluid is called directional valve, such as two position two-way, two position three-way, two position five way, three position five way, etc.

(2) According to the control mode, it can be divided into solenoid valve, mechanical valve, pneumatic valve and manual valve. Among them, the solenoid valve can be divided into single and double electric control valve; Mechanical valve can be divided into ball valve, roller valve, etc; Pneumatic control valve can also be divided into single pneumatic control valve and double pneumatic control valve; Manual valve can be divided into manual valve and foot valve.

(3) According to the working principle can be divided into direct valve and pilot valve, direct valve is by human or electromagnetic force, pneumatic direct realization of the valve direction requirements; The pilot valve is composed of two parts: the pilot head and the valve body. The piston with the pilot head drives the valve stem in the valve body to change direction.

(4) According to the working position of the reversing valve stem, the valve can be divided into two way and three way valves.

(5) According to the number of pores on the valve, it can be divided into 2port, 3port and 5PORT valves.