Saunders full bore diaphragm valves have been developed to satisfy market demand for a valve to handle sludges, slurries and give flow performance with minimum turbulence, while giving 100% leak tight closure. A valve package for corrosive and abrasive applications A valve with the ability to handle hundreds of fluids with great success due to the availability of a wide range of diaphragms and a wide range of body lining materials. A unique design, sealed from the service ad proofed against corrosion and erosion in hostile environments.