DISPENSE VALVE TECHNOLOGY (before mixer) Automatic Dispense Valve This pneumatically actuated valve keeps the "A" and "B" components separate until inside the mixer and has an adjustable snuffback action. Over/Under Injection Block This injection block is typically used when there is a high ratio difference between the "A" and "B" components. It introduces the low volume "B" component into the center of the "A" stream just prior to the motionless mixer. Solvent and air purging are typically used to flush the injection block and mixer. Twindispense Valve This mix valve keeps the "A" and "B" materials separate within the valve and features quick disconnect, spring loaded, non-drip valves. It is available in standard 1:1 and 10:1 models. Ideal for applications not requiring precise shot size control. Single-Component Dispensing Snuffer On/Off Dispense Valve Material flow commences on the forward stroke of the valve spool. When the spool retracts, a vacuum is created and an adjustable, dripless snuff back occurs at the dispense nozzle outlet.   OFF    ON Needle On/Off Dispense Valve Material flow commences when the needle retracts from its seat and stops when the needle reseats. ON OFF Positive Displacement Pinch Valve Fill Mode In the fill mode, the resilient dispense tube is pinched by the bottom pinch off piston, closing the material path to the dispense needle. A pressurized reservoir fills the dispense tube to prepare for the next cycle. This is the normal "ready" state. The dispense cycle begins when the controller is activated. Dispense Delay During the dispense delay, the top pinch off piston moves forward to stop the material supply from the reservoir and the bottom pinch off piston releases the dispense tube. Dispense Mode The dispense piston then moves forward until stopped by the micrometer stroke adjustment, squeezing a precise amount of material out of the dispense tube. When the dispense cycle is complete, the bottom pinch off piston seals off the dispense tube to prevent material drip. Immediately after, the dispense piston and top pinch off piston withdraw, allowing the material from the pressurized reservoir to refill the dispense tube. The system is again in the normal "ready" state. Positive Displacement Rod Valve with Spool Inlet/Outlet Fill Mode In the fill mode, the spool is positioned over the inlet port, providing a material flow path from the material supply source to the metering chamber while blocking the outlet port. The metering rod is retracted to an adjustable micrometer hard stop which determines the volumetric output. The metering chamber is filled with material supplied from pressure tanks, cartridges or transfer pumps. Dispense Delay During the dispense delay, the spool is positioned over the outlet port providing a material flow path to the dispense needle(s) and blocking the inlet port from the supply system. Dispense Mode Dispense is achieved when the metering rod is advanced through the metering chamber, displacing the material. Upon completion of the travel in the metering chamber, the spool shifts back to the inlet port position, and the metering rod retracts to allow the metering chamber to refill. Positive Displacement Rod Valve with Check Outlet Fill Mode In the fill mode, the spool is positioned over the inlet port, providing a material flow path from the material supply source to the metering chamber while blocking the outlet port. The metering rod is retracted to an adjustable micrometer hard stop which determines the volumetric output. The metering chamber is filled with material supplied from pressure tanks, cartridges or transfer pumps. Dispense Delay During dispense, the metering rod advances, blocking the material inlet port and pressurizing the metering chamber to overcome the outlet check valve.  Dispense Mode Dispense is achieved when the metering rod is advanced through the metering chamber, displacing the material. Upon completion of the travel in the metering chamber, the spool shifts back to the inlet port position, and the metering rod retracts to allow the metering chamber to refill.   Applications |  Products |  About Us |  Contact Us |  Request Information