Where 3V and 4V Series Directional Valves Are Used
3V and 4V series directional valves appear in many automation machines because they cover two very common pneumatic jobs: single-output air control and double-acting cylinder direction control. The 3V110, 3V210, 3V310 and 3V410 models are useful for simple supply-and-exhaust circuits. The 4V110, 4V210, 4V310 and 4V410 models are useful when a double-acting cylinder must extend and retract under air control. For buyers comparing products inside the solenoid valve category, industry application is a practical way to narrow the choice. The same valve family can be used in packaging, assembly, textile machinery, woodworking, light handling and general factory automation, but the correct size depends on actuator load, cylinder bore, cycle speed and available installation space. Packaging Machinery Packaging machines often use pneumatic cylinders for pushing cartons, guiding film, cutting, sealing, clamping and rejecting products. Small functions may use 3V valves when a spring-return cylinder or air blow point is enough. For example, a small reject nozzle or single-acting stopper can use a 3/2 way valve to supply air and exhaust quickly. Double-acting cylinders on packaging equipment often use 4V valves. A…
