What Are the "Position" and "Way" of a Reversing Valve / Solenoid Valve?

    1) "Position": To change fluid direction, the spool must have distinct working positions relative to the valve body. The number of these positions is called "positions." In schematic symbols, each square represents one position—e.g., three squares = 3-position, two squares = 2-position.

    2) "Way": As the spool moves, it alters connectivity among ports, changing flow direction. The number of main fluid ports connected to the hydraulic circuit is called "ways."

    3) Port Arrangement: Typically, the pressure port (P) is centered, aligned with the middle annular groove in the valve bore. The return/exhaust port (T or O) is on the side, linked to the outermost groove. Work ports (A, B) are above P, connected to grooves on either side of P. The drain/leakage port (L) is at the extreme end.

    Wuxi Huatong Pneumatic Manufacturing Co., Ltd. specializes in directional control valves: 2/2-way, 2/3-way, 2/5-way, 3/5-way, and more.

    Contact us: 400-150-1100