Cat Pumps has added new stainless steel plunger pumps to its line of products. The 316 models 3501 and 3511 offer expanded corrosion resistance to their high pressure 3507 and 3517 triplex positive displacement plunger pumps. The new pumps meet the specifications of specialized industrial applications where corrosive and aggressive liquids are pumped. The models are suitable for saltwater desalination, flushing through small instrument lines, hydrostatic pressure testing of vessels and pipes, increased oil recovery, and high pressure chemical dosing and injecting. The pumps are long lasting and offer a flushed option with models 3501C and 3511C. This option provides cooling for hi temperature liquids as well as added lubrication for low lubricity liquids like DI water or CO2. The continuous duty triplex design of the pump results in low pulsation, energy efficiency and durability.