Pneumatic three-way shut-off valve
Thread Content
A standard pneumatic cut-off ball valve is equipped with a solenoid valve and a limit switch; the solenoid valve is used to control the open and closed states. For a three-way cut-off ball valve, such as one with an L-shaped valve position, are there three states: two directions of flow and the closed state? How is it controlled by a solenoid valve?
There are several types of structures and functions for three-way valves, and there are also various types of pilot solenoid valves, including two-position three-way, two-position five-way, and three-position five-way valves. The process requirements vary, so the selection differs
Take the three-way ball valve as an example – a simple and commonly used type. In this three-way directional ball valve, the middle part is the inlet (A), while the left side (B) and right side (C) are the outlets. This valve is used to change the direction of the flow. During factory testing, A and B are connected while C is closed. 1. When the solenoid valve is powered, air enters from the left inlet of the cylinder, causing the piston to move and the cylinder to rotate in one direction; the valve core rotates 90 degrees, allowing A and C to be connected while B remains closed. 2. When the solenoid valve loses power, air enters from the right inlet of the cylinder, causing the piston to move and the cylinder to rotate in the opposite direction; the valve core rotates 90 degrees, allowing A and B to be connected while C remains closed