Yamada® NDP-50 Series Double Diaphragm Pumps

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)

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

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.