No Motor Reversal Function Solder Paste Screw Valve HS-2000S HS-2000R With Disposable Fluid Path For High Precision SMT Solder Paste Dispensing Product Overview The HS-2000S / HS-2000R Solder Paste Screw Valve is a precision volumetric dispensing valve designed for accurate, repeatable solder paste deposition in SMT, PCB assembly, and selective soldering applications. Driven by a servo motor and high-precision screw mechanism, it delivers consistent paste volume regardless of