Yamada® NDP-50 series Air Powered Double Diaphragm (AODD) pumps provide a maximum flow rate of 166 gallons per minute. Pumps are available in aluminum, stainless steel (316), cast iron, polypropylene, and Kynar construction, with a wide variety of diaphragm materials.
164.0 Gallons/Minute Max.
2" Fluid Port (NPT or ANSI Flange)
Intake & Discharge Connections
Polypropylene (PPG): 2" ANSI Flange B16.5 #150
Kynar® (PVDF): 2" ANSI Flange B16.5 #150
Aluminum (ADC-12): 2" ANSI Flange B16.5 #150 (with tapped 2" Female NPT)
Stainless Steel (316): 2" ANSI Flange 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
Buna N: 180°F (82°C)
Neoprene: 180°F (82°C)
Santoprene® (TPO): 180°F (82°C)
EPDM: 212°F (100°C)
PTFE: 212°F (100°C)
Hytrel® (TPE): 248°F (120°C)
Viton® fluoroelastomer: 248°F (120°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 kgf/cm²)
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 Coating
PTFE-coated
Weight and Dimensions
Dimensions: 17.68" W x 30.67" H
Net Weight: 88 lbs. (39.9 kg)
Shipping Weight: 99 lbs.
Tapped with 2" NPT ANSI flange
Dimensions: 18.63" W x 32.32" H
Net Weight: 84 lbs. (38.1 kg)
Shipping Weight: 108 lbs.
Dimensions: 18.63" W x 32.32" H
Net Weight: 103 lbs. (46.7 kg)
Shipping Weight: 121 lbs.
Dimensions: 17.72" W x 30.55" H
Net Weight: 159 lbs. (72.1 kg)
Shipping Weight: 168 lbs.
Dimensions: 17.72" W x 30.55" H
Net Weight: 162 lbs. (73.5 kg)
Shipping Weight: 173 lbs.
Notes
All Polypropylene, Aluminum, Cast Iron, and SS Hytrel®-fitted pumps include Hytrel® check balls and Buna N wetted o‑rings. Santoprene®-fitted pumps include Santoprene® check balls and EPDM wetted o‑rings.
Kynar® (PVDF) pumps fitted with Santoprene®, Hytrel®, or PTFE include PTFE check balls and o‑rings. Kynar®/EPDM fitted pumps include EPDM check balls and o‑rings. Viton® fitted pumps include Viton® check balls and o‑rings.
:: NDP-50 Literature
:: NDP-50 Maintenance Manuals
:: NDP-50 CAD Drawings
NDP-50 Aluminum
NDP-50 Cast Iron, NPT
NDP-50 Kynar®, Flange
NDP-50 Polypropylene, Flange
NDP-50 Stainless Steel, Flange
NDP-50 Stainless Steel, NPT
:: NDP-50 3D CAD Drawings
NDP-50 Aluminum (EPRT)
NDP-50 Aluminum (IGS)
NDP-50 Cast Iron (EPRT)
NDP-50 Kynar® (EPRT)
NDP-50 Kynar® (IGS)
NDP-50 Polypropylene (IGS)
NDP-50 Stainless Steel (EPRT)
NDP-50 Stainless Steel (IGS)
:: NDP-50 Performance Curves
:: NDP-50 Bill of Materials
:: NDP-50 Model Nomenclature
Yamada® is a registered trademark of Yamada America, Inc. Hytrel® is a registered trademark of E.I. du Pont de Nemours and Company. Santoprene® is a registered trademark of Advanced Elastomer Systems. Viton® is a registered trademark of DuPont Performance Elastomers. Due to Yamada's continued commitment to product improvement, specifications may change without notice.