4-Way 3-Position Directional Control Valves

In this article, we’ll cover the structure and cross-section representation of 4-way 3-position valves. Where are 4-way 3-position directional control valves used, and what is their working system?

4/3 Directional Control Valves

This type of valve is similar to 4/2 directional control valves. The only difference is that there’s one extra position. This position is called the center position.

4-way 3-position directional control valve and its symbol

When 4-way 3-position valves are in the center position, the pump doesn’t build pressure in the system.

Four-Port Structure

4/3 directional control valves provide complex flow routing with four connection ports and three different positions.

Variety of Center Positions

The center position determines system behavior with different configurations such as closed center, open center, or tandem center.

Bidirectional Actuator Control

4/3 valves allow controlling a hydraulic cylinder’s forward, backward, and stop motions with a single valve.

Effects of the Center Position on 4/3 Directional Control Valves

Various types of center positions are used in hydraulics for different purposes. There are about 30 different types of center positions in 4/3 valves.