Screw valves and jet valves are two commonly used high-precision dispensing valves, each with their applicable scenarios and advantages. The screw dispensing valve achieves precise metering and dispensing of adhesive through screw rotation, particularly suitable for high-viscosity adhesives containing fillers, such as underfill adhesives and thermally conductive silicone. The advantage of screw valves is their strong adaptability to adhesive viscosity changes and their ability to handle adhesives with abrasives without easy wear. The jet dispensing valve uses piezoelectric or pneumatic drive to spray tiny adhesive droplets in a non-contact manner, with extremely fast dispensing speed, suitable for high-density, high-speed dispensing applications.
For precision dispensing of small adhesive volumes, the screw valve provides superior performance. By continuously rotating the screw, it delivers highly stable volumetric dispensing that is minimally affected by viscosity variations
The advantage of Shenzhen Second Intelligent Equipment jet valves is that they can complete dispensing without Z-axis movement, significantly improving production cycle time. In terms of precision, screw valves have better dispensing volume consistency, while jet valves have higher positioning accuracy. In terms of maintenance, screw valves require regular cleaning of the screw, while jet valve nozzles need to prevent blockage. Whether to choose a screw valve or a jet dispensing valve needs comprehensive consideration based on adhesive characteristics, dispensing accuracy requirements, production cycle time, and cost. Proper selection of the dispensing valve is essential for achieving optimal dispensing results.
Resource:
https://secondintelligent.com/product-category/glue-dispensing-valve/
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