Pin Type Dispensing Valve is a precision instrument designed for high accuracy fluid control, Specifically for application like micro dot dispensing.
Key Components:
Micrometer Adjustment Head: The silver dial at the top allows for ultra-fine stroke adjustment. By turning this dial, the operator can precisely control how far the internal pin retracts, which directly determines the volume of the fluid "dot" being dispensed.
Pneumatic Actuator (Blue Section): This part houses the piston mechanism that moves the pin. It features air ports where pneumatic fittings are attached to receive trigger signals from a controller.
Valve Body (Stainless Steel Block): The central metal block contains the fluid chamber. It includes a side port for the fluid inlet, where the material (such as adhesive or oil) enters under pressure.
Dispensing Tip/Nozzle Adapter: The bottom assembly is where the material is extruded. It is designed to hold various nozzle sizes to accommodate different micro-dot requirements.
Functional Overview :
Mechanism: The valve operates by using air pressure to lift an internal pin (or needle) away from a seat within the valve body. When the air pressure is released, an internal spring or air signal pushes the pin back down to seal the orifice, cutting off the flow sharply to prevent "stringing" or dripping.
Precision for Micro-Dots: The combination of the micrometer head and the narrow pin design allows the valve to dispense extremely small, consistent volumes of material. This is critical in industries like electronics or medical device manufacturing where precise deposit placement is required.
Modular Fittings: The source shows various L-shaped pneumatic fittings and a knurled nut, indicating that the valve is designed for easy integration into automated assembly lines using standard air tubing.