YAMADA NDP-40 Series User Manual (English)

Other manuals for YAMADA NDP-40 Series

Questions and Answers:

M
Marie MartinezAug 15, 2025
What to do if my YAMADA NDP-40 Water Pump runs, but fluid does not come out?
- A
  aclarkAug 15, 2025
  If your YAMADA Water Pump runs but no fluid comes out, several issues could be the cause. A long suction lift or discharge head could be the problem, so confirm the piping configuration and shorten the length if necessary. Check the material piping on the discharge side, including the strainer, for clogs caused by sludge. Make sure that the valve on the suction side is open. If the pump is clogged with sludge, disassemble the casing and clean it. Lastly, inspect the ball and valve seat for wear or damage; if found, disassemble the manifold and replace the affected parts.
C
Connor GordonAug 20, 2025
Why is my YAMADA NDP-40 Water Pump making irregular noise?
- N
  Natasha MoonAug 20, 2025
  Irregular noise in your YAMADA Water Pump can stem from a few potential issues. If the supply air pressure is too high, adjust it accordingly. Spool oscillation, leading to ball chattering, can also cause irregular noise; in this case, adjust both the supply air pressure and discharge pressure, and reduce the inlet flow valve to adjust material pressure and volume. Another cause may be that the pump is clogged with sludge containing particles larger than the permissible diameter, so disassemble the casing and clean it.
M
michelle46Aug 25, 2025
What causes irregular vibration in my YAMADA NDP-40 Water Pump?
- C
  Carrie Perez DVMAug 25, 2025
  Irregular vibration in your YAMADA Water Pump can be attributed to several factors. If the supply air pressure is too high, adjust it to the correct level. The spool oscillating and causing ball chattering can also lead to vibration; in this case, adjust the supply air pressure and exhaust pressure. Finally, loose connection parts or pump mounting can cause vibration, so check each connection part and tighten the bolts.
A
Alexandra DavidsonAug 28, 2025
Why is my YAMADA NDP-40 leaking material from the exhaust port (silencer)?
- S
  shawnmcknightAug 28, 2025
  If you notice material leaking from the exhaust port (silencer) of your YAMADA Water Pump, it could be due to a damaged diaphragm. Disassemble the pump to inspect it, and replace the diaphragm if necessary. Another potential cause is loose fastening nuts for the center disk. In this case, disassemble the pump, check the nuts, and tighten them.
R
Ronald AdamsSep 2, 2025
How to fix high air consumption during operation of my YAMADA NDP-40 Water Pump?
- R
  Robert GillSep 2, 2025
  High air consumption during the operation of your YAMADA Water Pump can be caused by worn-out seal rings and sleeves. To address this, disassemble the air-switch portion, check and clean it, and replace parts as needed.

YAMADA NDP-40 Series Specifications

General

Power Source	Compressed Air
Series	NDP-40
Type	Air Operated Double Diaphragm Pump
Port Size	1.5 inches
Max Solid Size	0.25 inches (6.35 mm)
Air Inlet Size	1/2 inch NPT
Pump Body Material	Aluminum
Diaphragm Material	Santoprene
Inlet/Outlet Diameter	1.5 inches
Motor Power	N/A (Pneumatic)
Voltage	N/A (Pneumatic)
Frequency	N/A (Pneumatic)