High Speed Operation PUR Piezo Valve Wear Resistant Material With Luer Connector Non Contact Jetting Dispensing Valve For Hot Melt PUR Adhesive Product Overview PUR hot-melt adhesives are widely used for bonding, sealing, potting and structural assembly, but they require stable temperature control and precise flow regulation. This PUR Piezo Valve integrates a piezoelectric driving unit, heated fluid path and precision nozzle structure to maintain consistent adhesive viscosity