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Yamada NDP-50 Series Pumps

166 USGPM Maximum Capacity / 2" Port Size

    Port Dimensions

    Intake & Discharge Connection
  • Polypropylene (PPG) 2" ANSI B16.5 #150
  • Kynar (PVDF) 2" ANSI B16.5 #150
  • Aluminum (ADC-12) 2" ANSI B16.5 #150 (with tapped 2" Female NPT)
  • Stainless Steel (316) 2" ANSI B16.5 #150 or 2" Female NPT
  • Hastelloy 2" ANSI B16.5 #150 or 2" Female NPT
  • Cast Iron 2" Female NPT
    • Air Inlet
  • 3/4" Female NPT (includes ball valve)
    • Air Exhaust
  • 1" Female NPT (includes silencer)

    • 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: 1.14 gallons (4.3 liters)
  • PTFE diaphragm: 0.55 gallons (2.1 liters)

    • Maximum Cycles Per Minute

  • Rubber diaphragm: 146
  • PTFE diaphragm: 220

    • Maximum Size Solid

  • 5/16" (8 mm)

    • Maximum Dry Suction Lift

  • Rubber-fitted pump capability: 19-feet

    • Air Motor

  • Standard: Aluminum
  • Optional: Epoxy-coated, Teflon-coated, or Electroless Nickel Plate

    • All Polypropylene, Aluminum, Cast Iron, Hastelloy, 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 NDP50 Maintenance Manual