The valve core is a valve part of the valve body with its movement to realize the basic function of direction control, pressure control or flow control.

Classification editing

According to the movement is divided into rotating type (45 degrees, 90 degrees, 180 degrees, 360 degrees), translation (radial, face).

According to their shape can be generally classified as spherical (ball) and conical (cock), bilocate (butterfly valves and gate valves), round cap (cut-off valve and check valve) cylindrical (Huan Xiangfa).

Generally bronze or stainless steel, but also plastic, nylon, ceramics, glass, etc..

Valve spool valve is one of the main components to achieve control of the pressure.