0.02ml Micro Precision Dual Tube Screw Valve Two Component AB Glue Dispensing Valve High Accuracy Double Liquid Screw Dispenser for Epoxy Adhesive Automated Dispensing System Product Overview The Dual Tube Screw Valve is engineered for applications that require precise ratio control between two separate materials, such as resin and hardener, base and catalyst, or adhesive and activator. By using an independent screw-driven metering structure, the valve delivers stable output