Ampco Z Series Pump
Now Available in Duplex 2205

Ampco Pumps' standard K, R and Z Series pumps are now available from stock in Duplex 2205, along with 316 SS and nickel-aluminum bronze. Duplex 2205 is highly recommended for seawater reverse osmosis and desalination applications, in addition to other applications that require superior corrosion resistance, superior resistance to the effects of cavitation, or enhanced resistance to particle contamination.

Duplex 2205 is a relatively new grade of stainless steel alloy that offers many advantages over 316 nd 316L alloys. The "duplex" term refers to the dual-grain structural nature of this alloy – it is 45% ferritic and 55% austenitic. The "2205" refers to the 22% chromium / 5% nickel constituents present in the alloy. The wide array of advantages that the duplex alloy provides over 316 and 316L alloys have fostered its acceptance in a numberof industries, including marine, oil and gas, petrochemical, pulp and paper, wastewater, and desalination.

Advantages of Duplex 2205 over 316/316L stainless:

• Lower coefficient of thermal expansion
• Higher thermal conductivity
• Resistance to chloride stress-cracking
• Superior resistance to pitting and crevice corrosion
• Superior erosion fatigue properties
• High yield strength, roughly twice that of austenitic stainless steels

Ampco pumps in Duplex 2205 are available now. For more about these pumps, have a look at our Ampco Industrial pump section, or simply contact us.