Pneumatic Piston Filler Machine Backed by our enriched experience of our specialized expertise, Shri Ram Packaging is engaged in selling premium quality pneumatically operated piston filling machines - block type This specially designed model can fill plain paste and a thick paste as well with any desired size of solid particles in the product, up to the size of 5 to 10 mm even as customization to Working: Using piston block-based method, the material can be sucked from the hopper in the syringe. Even the Rotary Valve Piston Filler is able to suck directly from a source tank through pipes. With regard to its working, in the first stage, the rotary valve is fed with the material from the hopper due to the movement of T-shaped cylinder/syringe. Then the valve takes a flip of 90 degrees and connects the syringe/cylinder with the nozzle for proper dispensing of material, disconnecting itself from the hopper. Thus at one time, the high-quality valve connects only two pieces of equipment to ensure the seamless filling.