From the valve body structure

Can be divided into single-seat with a seat and a spool valve body, with two seats and a spool valve seat valve body, with a two-way valve connected population and a connection exports, with three connection port (with a population of two exits diversion or two of the population and an outlet confluence) of three-way valve body.direct acting solenoid valve
From the spool displacement adjusting mechanism is divided into linear displacement valve and the angular displacement of the valve. They were used in conjunction with the implementing agencies of the executive body of the linear displacement and angular displacement. Through valves, angle valves, sleeve valves are the linear displacement valve, also known as sliding stem valve (SlidingStemValve) o butterfly valves, eccentric rotary valve, ball valve, belong to the angular displacement of the valve, also known as rotary valve (Ro-taryValve) o In recent years, there are some manufacturers · manufacturers launched a mobile seat control valve, it is in conjunction with the rotary actuators, but the relative displacement of the spool of view, linear displacement, such as Nufflo control valve.pneumatic fitting