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Product Data Sheet

DS4001

Yamada Air Operated Double
DIAPHRAGM PUMPS
These pumps are lightweight, compact and easy to use for
pumping a wide range of liquids. As they are air operated
they are ideal for pumping volatile or inflammable liquids in
hazardous areas.
Self-priming from a dry start these pumps are ideal in
situations where liquid has to be pulled from a container.
The pumps can also run dry.
The robust construction reduces maintenance to a
minimum.

Model NDP-5 - 1/4” Maximum Capacity 10 L/min
SPECIFICATION
Pump Model
Port Dimensions Liquid Inlet
Liquid Outlet
Air Inlet
Air Exhaust
Discharge Volume per Cycle
Air Pressure Range
Maximum Discharge Pressure
Maximum Solid Size
Weight
Wetted Materials
Diaphragm Materials

NDP-5-FPT
1/4” BSP
1/4” BSP

NDP-5-FVT
NDP-5-FAT
NDP-5-FST
1/4” BSP
1/4” BSPT
1/4” BSPT
1/4” BSP
1/4” BSPT
1/4” BSPT
1/4” BSPT (with ball valve)
Rc 3/8"
20 cc
0.2-0.5 MPa
0.2-0.7 MPa
0.5 MPa
0.7 MPa
Less than 0.2 mm
1.4 Kgs
1.45 Kgs
1.5 Kgs
3.0 Kgs
Polypropylene
Kynar®
Aluminium
Stainless Steel
(PPG)
(PVDF)
(AC4C-T6)
(SCS-14)
PTFE
PTFE
PTFE
PTFE

DIMENSIONS
Performance Curves
●

●

Performance curves and test data are based on fresh water at ambient temperature. Discharge volume and head
vary according to viscosity, specific gravity and other physical properties of the fluid/paste being pumped.
To achieve the best diaphragm life and the most efficient air consumption, select a pump 1.5 times the required
capacity.

DS4001

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