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Yamada NDP-25 Series Pumps

49 USGPM - 1" Port Size

    Port Dimensions
    Intake & Discharge Connections
  • Polypropylene (PPG): 1" Female NPT
  • Kynar® (PVDF): 1" Female NPT
  • Aluminum (ADC-12): 1" Female NPT
  • Stainless Steel (316): 1" Female NPT
  • Cast Iron: 1" Female NPT
    • Air Inlet
  • 3/8" Female NPT (includes ball valve)
    • Air Exhaust
  • 3/4" Female NPT (includes silencer)
  • ANSI Flange also available Consult Yamada.
    • Maximum Liquid Temperature*
    Diaphragm Material / Temperature
  • Neoprene: 180°F (82°C)
  • Buna N: 180°F (82°C)
  • EPDM: 212°F (100°C)
  • Hytrel: 248°F (120°C)
  • Santoprene: 225°F (107°C)
  • Viton: 248°F (120°C)
  • Teflon: (PTFE) 212°F (100°C)

    • *Polypropylene pumps have a maximum liquid temperature of 180°F (82°C) regardless of diaphragm material.

    Kynar pumps have a maximum temperature of 248°F (120°C) when fitted with Hytrel or Viton diaphragms.

    Air Supply Pressure (All Models)
  • 20 to 100 PSI (1.4 to 7 kfg/cm)
    • Discharge Volume Per Cycle
  • Rubber diaphragm: 0.23 gallons (862 cc)
  • PTFE diaphragm: 0.17 gallons (654 cc)
    • Maximum Cycles Per Minute
  • Rubber diaphragm: 210
  • PTFE diaphragm: 210
    • Maximum Size Solid
  • 3/16" (4.8 mm)
    • Maximum Dry Suction Lift
  • Rubber-fitted pump capability: 18-feet
    • Air Motor
  • Standard: Aluminum
  • Optional: Epoxy-coated, Teflon-coated, or Electroless Nickel Plate

    All Polypropylene, Aluminum, Cast Iron, and SS Hytrel fitted pumps include Buna N check balls & o-rings and Santoprene fitted pumps include EPDM check balls & wetted o-rings. Kynar (PVDF) pumps fitted with Santoprene, Hytrel, or Teflon include Teflon check balls & o-rings. Kynar/EPDM fitted pumps include EPDM check balls & o-rings and Viton fitted include Viton balls & o-rings.

Click Here for the NDP20 & NDP25 Maintenance Manual