Yamada 771788 Kynar Wear Protector for NDP-50
The Yamada 771788 is a genuine Yamada wear protector, Kynar (PVDF), used in NDP-50 series air-operated double diaphragm (AODD) pumps. It is a wear/impact plate that shields the pump housing from abrasive or high-velocity flow at a specific internal location, extending the life of the structural casting underneath it.
Genuine Yamada replacement parts are machined and molded to the original factory tolerances, so fit, alignment and seal engagement match the component being replaced. As required per pump. Always compare the exact part number against your pump's nameplate before ordering, since Yamada varies internal components by both pump size and body material / elastomer combination.
Key Features
- Genuine Yamada replacement wear protector
- Material: Kynar (PVDF)
- Fits NDP-50 series AODD pumps
- As required per pump
- Molded or machined to factory tolerances for correct fit and seal engagement
Applications
- NDP-50 series AODD pump service and rebuilds
- Scheduled preventive maintenance
- Restoring lost flow, leaks, or erratic cycling
- Marine, industrial, chemical and wash-down service
Specifications
- Brand: Yamada
- Manufacturer: Yamada America
- Manufacturer Part Number: 771788
- Part Type: Wear Protector
- Material: Kynar (PVDF)
- Fits: NDP-50 Series
- Condition: New
Frequently Asked Questions
Q: Does this part need to match the pump body material?
Yes. Mixing dissimilar materials in the wetted path can cause galvanic corrosion or chemical incompatibility, so match this part to the body material and elastomer combination already on the pump.
Q: What should I check before reassembling around this part?
Confirm mating surfaces are clean and undamaged, replace the gaskets or O-rings it seals against rather than reusing them, and torque fasteners to the factory sequence and spec rather than just snugging them down.
Q: What causes this kind of structural part to need replacement?
Wear from repeated contact with a moving component, corrosion or chemical attack from the pumped fluid, or physical damage from an impact or overtightened fastener during a previous rebuild.
Q: Is this part likely to wear out again soon after replacement?
Not under normal duty. These are structural components rather than flexing wear items, so a correctly torqued, correctly matched replacement typically lasts for the working life of the surrounding assembly barring abrasive or corrosive service.
Not sure this is the right part? Send us a picture of your Pump Plate to https://www.clrmarine.com/Contact-Us and the CLR Marine team will confirm the correct wear protector.
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