Gracos double diaphragm flapper pumps are developed specifically for the food processing industry. Gracos SaniForce 1040, 1590 and 2150 air-operated diaphragm pumps have flow rates up to 25% greater than many competitive pumps with PTFE diaphragms, but have one of the best, most durable, lube-free air valves in the industry. Pump Finish is a Cast 316 SST with Sanitary shot-blasted wetted sections with 125 Ra finish. Fluid contact areas are all FDA-compliant and meet CFR Title 21.