Yamada® NDP-40 Series Double Diaphragm Pumps

Yamada® NDP-40 series Air Powered Double Diaphragm (AODD) pumps provide a maximum flow rate of 116 gallons per minute. Pumps are available in aluminum, stainless steel (316), cast iron, polypropylene, and Kynar construction, with a wide variety of diaphragm materials.

107.0 Gallons/Minute Max.
1-1/2″ Fluid Port
(NPT or ANSI Flange)

Intake & Discharge Connections

Polypropylene (PPG): 1-1/2″ ANSI Flange B16.5 #150

Kynar® (PVDF): 1-1/2″ ANSI Flange B16.5 #150

Aluminum (ADC-12): 1-1/2″ ANSI Flange B16.5 #150 (with tapped 1-1/2″ Female NPT)

Stainless Steel (316): 1-1/2″ ANSI Flange B16.5 #150 or 1-1/2″ Female NPT

Cast Iron: 1-1/2″ Female NPT

Air Inlet

1/2″ Female NPT (includes ball valve)

Air Exhaust

3/4″ 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: 0.79 gallons (3.0 liters)

PTFE diaphragm: 0.37 gallons (1.4 liters)

Maximum Cycles Per Minute

Rubber diaphragm: 148

PTFE diaphragm: 270

Maximum Size Solid

9/32″ (7 mm)

Maximum Dry Suction Lift

Rubber-fitted pump capability: 18-feet

Air Motor

Standard: Aluminum

Optional Coating

PTFE-coated

Weight and Dimensions

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.