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Mammouth Valve

Amri Mammouth Valve with Hard Rubber Coated Disc

The MAMMOUTH series butterfly valves utilize a fully elastomer lined body, centered shaft design with either a metal or hard rubber coated disc.  The MAMMOUTH is typically used in seawater, fresh water, river water intake and limestone slurry, among other applications.  Typical installations include condenser inlet and outlet isolation valves, FGD (Flue Gas De-sulfurization) absorption tower pump isolation, river water intake and tank isolation. The MAMMOUTH valve is manufactured from 42 to 140 inches.

The MAMMOUTH valve is especially designed for large pipe sizes and has all the characteristics of AMRI lined valves.

  • Reliable bubble tight shut off
  • Zero shaft leakage
  • High resistance to corrosion
  • Maintenance free design and materials
  • Scale and barnacle resistant
  • Reduced weight and overall dimensions
  • No additional supports required
  • Dry body, dry shaft design for extended life
  • Available from 42 to 140 inch (larger sizes on request)
  • High pressure capability (up to 365 psig)
  • Conforms to the following flange drilling standards
    • AWWA C207 Classes B, D and E
    • ASME B16.1 Class 125
    • ASME B16.47 Class 150
    • PN 6, 10, 16, 20 and 25

Applications include: 

  • Circulating cooling water (seawater, raw water or freshwater)
  • Water supply and treatment
  • Desalination (multi-flash and reverse osmosis (RO) processes)
  • Chemical and petrochemicals
  • Electric power stations (hydraulic, thermal and nuclear)
  • Limestone slurry in FGD plants including high chloride content
  • Iron and steel industry
  • Shipbuilding

Visit Amri to learn more!

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