Applications Manual Bulk Gun Characteristics Bulk Properties PowerFlow Bulk is a PC COX SULZER hand gun. PowerFlow Bulk is a large volume applicator with a 2 liter, 3 liter or 4 liter container. PowerFlow Bulk is ergonomic, very robust and easy to use. This PowerFlow Bulk manual dispensing system from the manufacturer PC COX SULZER is made for low viscosity materials, for bulk application.