PTFE Suckback Valves
Suckback Valves are ideal for acid, solvent, photoresist solutions and other process dispensed chemistries. The iPolymer Suckback Valve will pull a vacuum and prevent excessive dripping from the dispensing nozzle. The iPolymer Suckback Valve is constructed of an “all wetted” PTFE media flow path. It incorporates the suckback feature in a Normally Closed pneumatic valve. When air pressure is removed from the valve actuator, an internal diaphragm is pushed upward which forms a vacuum in the valve body. While the valve is closing, the vacuum sucks back the final droplets of fluid. Thereafter, the valve completely closes and seals the media flow path. An additional unique feature of the Suckback Valve is a Vacuum Adjustment Knob which allows the user to set the vacuum level.
