Yamada 682518 1 in Muffler for NDP-500 and NDP-800
The Yamada 682518 is the genuine 1 in muffler for NDP-500 and NDP-800 Series pumps. The pump exhausts its spent air on every stroke, and this is the part that handles that exhaust - taking the sharp edge off the noise without choking the flow the pump needs to breathe.
What clogs it tells you something. Oil and dirt mean the air supply needs filtering; pumped product in the exhaust means a diaphragm has split and the air motor has been passing product for a while, in which case the muffler is the least of the problems and the pump needs opening up.
Key Features
- Genuine Yamada replacement 1 in muffler
- Fits NDP-500 and NDP-800 Series pumps
- One per pump
- Reduces exhaust noise without choking air flow
- Restores lost flow caused by exhaust back pressure
- Direct replacement, no modification required
Applications
- NDP-500 and NDP-800 Series pumps
- Restoring performance lost to a clogged exhaust
- Routine air motor service
- Noise reduction in enclosed engine rooms and plant rooms
- Service after a diaphragm failure vented product into the air side
- Marine, industrial and transfer duty
Specifications
- Brand: Yamada
- Manufacturer: Yamada America
- Manufacturer Part Number: 682518
- Part Type: 1 in Muffler
- Size: 1 in
- Fits: NDP-500 and NDP-800 Series pumps
- Quantity Used: One per pump
- Condition: New
Frequently Asked Questions
Q: Can a blocked muffler really reduce flow?
Yes, and noticeably. Exhaust back pressure works against the air motor on every stroke, so the pump runs slower and uses more air for less output.
Q: How often should it be replaced?
Whenever it is visibly dirty or the pump has lost speed for no other reason. On a clean dry air supply it lasts a long time; on a dirty one it can need attention every few months.
Q: There is product in the exhaust. What does that mean?
A diaphragm has split and the pump has been venting product into the air side. Replace the diaphragms and check the air motor internals, not just the muffler.
Q: Can I run the pump without a muffler?
It will run, and it will be extremely loud. It also leaves the exhaust port open to whatever is in the surrounding air, which then gets drawn back into the motor.
Not sure this is the right part? Send us a Picture of the Pump Plate on your pump and the CLR Marine team will confirm the correct 1 in muffler.
CLRMarine
