►NDP-20

 

Read more below about Yamada’s NDP-20 port dimensions. 

 

Intake & Discharge Connection: 

  • Polypropylene (PPG) 3/4″ Female NPT
     
  • Aluminum (ADC-12) 3/4″ Female NPT
     
  • Stainless Steel (316) 3/4″ Female NPT 

 

Flow and Head Capability: 1.5 – 28 GPM / up to 231′ TDH 

 

Air Inlet: 1/4″ Female NPT (includes ball valve) 

 

Air Exhaust: 3/4″ Female NPT (includes silencer), ANSI Flange also available. 

 

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. 

 

Air Supply Pressure (All Models): 20 to 100 PSI (1.4 to 7 kfg/cm) 

 

Discharge Volume Per Cycle: Rubber diaphragm: 0.14 gallons (490 cc) 

 

PTFE diaphragm: 0.10 gallons (290 cc) 

  • Maximum Cycles Per Minute- Rubber diaphragm: 195 

 

PTFE diaphragm: 195 

  • Maximum Size Solid- 1/16″ (2.0 mm)
     
  • Maximum Dry Suction Lift- Rubber-fitted pump capability: 18-feet
     
  • Air Motor- Standard: Aluminum
     
  • Optional: Epoxy-coated, Teflon-coated, or Electroless Nickel Plate 

 

Notes: Hytrel-fitted pumps include Buna N check balls & wetted o-rings. Santoprene-fitted pumps include EPDM check balls & wetted o-rings.