Puma 28-40 is pneumatic piston pump that provides functionality for Airless and AirCoat finishing with low to moderate viscosity materials in processes that include cabinet manufacturing, wood working, furniture construction and metal production. Its critical pressure ratio quotation enables low pulsation material flow and standardized atomization routine even with greater hose dimensions. This finishing pump is integrated with enhanced inlet and outlet valves, and an automated packing mechanism that are designed with fine construction that permits easy cleaning and maintenance.