NDP-80 Series

Yamada® NDP-80 Series Double Diaphragm Pump

Yamada Trial Pump Program

3" Fluid Port

Yamada® NDP-80 series Aodd pumps provide a maximum flow rate of 215 gallons per minute. Pumps are available in aluminum, stainless steel (316), Kynar® (PVDF), groundable acetal, and polypropylene construction.

What separates Yamada from the rest of the pack is our air valve technology. Yamada uses a completely non-lubricated main air valve and independent pilot mechanisms to control the air logic.

As compressed air enters the pump, it is directed via the main air valve to one side or the other, depending upon the starting position of the c-spool.  As the air enters the chamber, it forces the diaphragm outward. This outward momentum forces liquid out of the discharge ball valve and loads the opposite inlet ball valve. As the diaphragm travels outward, the connected diaphragm on the opposite side is pulling the diaphragm inward.

When it travels a full stroke, it will contact the pilot valve, depressing it and breaking the seal to open an exhaust port.

The open port allows the compressed air to the exhaust from the back side of the air valve. The pressure drop produces a shift of the main air valve. This motion simply repeats on the other side.

 Options > Abrasion Pads



215 Gallons/Minute
3" Fluid Port (NPT or ANSI Flange)


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


Diaphragm Maximum Liquid Temperature1
(N) Buna N 180°F (82°C)
(C) Neoprene 180°F (82°C)
(S) Santoprene®(TPO) 180°F (82°C)
(E) EPDM 212°F (100°C)
(T) PTFE 212°F (100°C)
(H) Hytrel® (TPE) 248°F (120°C)
(V) Viton® fluoroelastomer 248°F (120°C)
(U) Ultimate 212°F (100°C)
*The maximum liquid temperature for metal is determined by the elastomer (diaphragm material). 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 kgf/cm²)
Discharge Volume Per Cycle

Rubber diaphragm: 2.26 gallons (8.57 liters)
PTFE diaphragm: 1.0 gallons (3.8 liters)

Maximum Cycles Per Minute

Rubber diaphragm: 95
PTFE diaphragm: 160

Maximum Size Solid 13/32" (10 mm)
Maximum Dry Suction Lift Rubber-fitted pump capability: 19-feet
Air Motor Standard: Aluminum
Optional Coating PTFE-coated


Model # Description
852429 NDP-80BAC
852238 NDP-80BAN
852430 NDP-80BAE
852239 NDP-80BAH
852725 NDP-80BAS
852306 NDP-80BAV
852240 NDP-80BAT
852240-U NDP-80BAU
852431 NDP-80BSC
852241 NDP-80BSN
852432 NDP-80BSE
852242 NDP-80BSH
852726 NDP-80BSS
852307 NDP-80BSV
852243 NDP-80BST
852243-U NDP-80BSU
852653 NDP-80BSC-NPT
852649 NDP-80BSN-NPT
852654 NDP-80BSE-NPT
852650 NDP-80BSH-NPT
852728 NDP-80BSS-NPT
852652 NDP-80BSV-NPT
852651 NDP-80BST-NPT
852651-U NDP-80BSU-NPT
852859 NDP-80BFC
852855 NDP-80BFN
852860 NDP-80BFE
852856 NDP-80BFH
852861 NDP-80BFS
852858 NDP-80BFV
852857 NDP-80BFT
852857-U NDP-80BFU
852433 NDP-80BPC
852244 NDP-80BPN
852434 NDP-80BPE
852245 NDP-80BPH
852727 NDP-80BPS
852308 NDP-80BPV
852246 NDP-80BPT
852246-U NDP-80BPU


:: Aluminum
Dimensions: 20.57" W x 39.30" H
Net Weight: 143 lbs. (65 kg)
Shipping Weight: 163 lbs.
:: Polypropylene (ANSI flange)
Dimensions: 22.83" W x 41.10" H
Net Weight: 141 lbs. (64 kg)
Shipping Weight: 161 lbs.
:: Stainless Steel (NPT)
Dimensions: 20.51" W x 38.73" H
Net Weight: 225 lbs. (102 kg)
Shipping Weight: 245 lbs.
:: Stainless Steel (ANSI FLANGE)
Dimensions: 20.51" W x 38.73" H
Net Weight: 225 lbs. (102 kg)
Shipping Weight: 245 lbs.
:: Cast Iron
Dimensions: 20.51" W x 38.73" H
Net Weight: 247 lbs. (112 kg)
Shipping Weight: 267 lbs.


Air Motor Kit


Liquid End Kits
  Aluminum: K80-MC, K80-MN, K80-ME, K80-MH, K80-MS, K80-MV, K80-MT, K80-MU
  Stainless Steel: K80-MC, K80-MN, K80-ME, K80-MH, K80-MS, K80-MV, K80-MT, K80-MU
  Cast Iron: K80-MC, K80-MN, K80-ME, K80-MH, K80-MS, K80-MV, K80-MT, K80-MU
  Polypropylene: K80-PC, K80-PN, K80-PE, K80-PH, K80-PS, K80-PV, K80-PT, K80-PU
Filter / Regulators

FR-5, FR-5A (Auto Drain)


AD-50 Series

Liquid Level Controller




Diaphragm Monitor System


DRy Run Detector


The Yamada Advantage

Yamada Air Powered Double Diaphragm Pumps: Engineered for High Performance. Manufactured for Long Life.

Rugged, Bolted Construction

All Yamada pumps feature bolted construction, which eliminates leaks and simplifies post-maintenance reassembly. Bolted construction is superior to clamp band retainers, which frequently require frustrating, unnecessary leakage rebuilds from misalignment during reassembly.

Outside-Accessible Air Valve

Inspection or maintenance of every Yamada air valve may be performed without removing the pump from service. Outside accessible, making it easy to fix / inspect.

Unified Air Valve Concept

Common-size air valve assemblies reduce parts confusion and inventory.

Pilot Valve

Unique to the Yamada design is an individual modular pilot valve that actuates the air valve. It is depressed slightly by the inner center disk creating a pressure drop at one end of the air valve, allowing shifting to occur. It is maintenance free with no cumbersome snap rings or lubricated dynamic o-rings to replace or repair.

Patented Air Valve Technology

Incorporated in every Yamada Air Powered Double Diaphragm pump

Yamada air valve technology is the heart of the air-powered double diaphragm pump and determines reliability. Yamada holds three patents on its field proven valve and enjoys a superior reputation throughout the industry.

Why Specify an AODD Pump?

  • Handles a wide variety of fluids with high solids content
  • Self Priming
  • Ability to Run Dry
  • Variable flow rate and discharge pressure
  • Portable
  • Simple Installation
  • Dead Head
  • Shear Sensitive
  • Safe Operation
  • Submersible
  • Pumping efficiency remains constant
  • Cannot Overheat
  • High Pressure capabilities
  • No mechanical seals, couplings or motors
  • No pressure relief or bypass needed

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