Industrial Wet Belt Sanding Unit for Glass Edge Finishing. Capable of professional quality - seaming, polishing, contouring, frost line or satin finishes. Sanders vertical configuration uses the industry standard 4" x 106" Abrasive Belting. Sander can be operated either wet or dry. Proprietary produced Urethane Roller Platen designed and produced by PST. The pressure molded Urethane offers excellent seaming performance plus greatly enhanced wear life of the roller. Competing sanders use an older style roller platen requiring more frequent replacement intervals. Optional Bar and Flat Plate style platens are offered and sold separately. PST Vertical Belt Sanding Machine operates on 120 volt power (optional 230V-1ph) electrical service powering a Baldor 1HP TEFC direct drive motor. The provided water valve unit has a manually operated shutoff valve to provide wet or dry sanding operations. With the valve open the electric solenoid is engaged with the drive motor to provide a twin water spray pattern for any style belt chosen from diamond to cerium impregnated. The belt auto-tensioning system is simple and reliable, using an industrial grade spring unit. Sanders are shipped with 120 grit belt installed and tension preset ready to operate. Competing units use a gas cylinder for tensioning with potential for leaking. A quick tension release handle is provided for ease of belt replacement; re-tensioning after belt replacement intervals would be a rare event saving the operator startup time. The frame and water bucket are painted with "Hammerite" industrial coatings for durability in corrosive environments. For additional corrosive control a sacrificial Anode is installed within the water bucket. An optional stainless steel bucket is available upon request. The bucket is oversized to control water overspray providing a cleaner working environment. The machine also comes with an adjustable front splash guard that can be lowered or raised.