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OEM Buna-N Repair Kit Parts for 1.5 Inch Yamada Pump K40-MN

2022 Notice: While supply chain problems are better than last year, we anticipate them to continue for 2022. Please expect some delays. view details

OEM 1.5" Yamada Pump Buna-N Repair Kit
List price: $269
Free Shipping to lower US 48
In Stock
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Quick Overview: 
  • Repair kit for NDP-40BAN Yamada Pump
  • Includes Diaphragms, Ball Valves and Valve Seats
  • Made from Buna N Materials


This Repair Parts Kit will fit our 1-1/2" Yamada Diaphragm Pump and includes replacement balls, diaphragms and valve seats.

We only sell the Buna-N materials of this replacement kit which is a great material for the sealcoating industry because it holds up well to coal tar, asphalt emulsions and most importantly aggregates like sand.


We sell the "Buna-N" material in this replacement kit which we've found to do a great job with asphalt emulsion and coal tar sealers, and the Buna N holds up great with sealers that have abbrasives.

Yamada NDP-40BA Teardown Video


  • 2 x Diaphragm 40N (771700)

  • 4 x Valve Seats 40N (771994)

  • 4 x Ball 40N (770584)

  • 4 x O-Ring (640065)

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Part Compatibility List

OEM 1.5" Yamada Pump Buna-N Repair Kit is compatible with the following product(s).

Shipping Weight
Weight: 5 lb
Shipping Dimensions
Dimensions: 10 in × 10 in × 10 in