Stenner M128  

  • Stenner M128

Stenner M128 Proportional Pump 1:128 | MO

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Stenner 1:128 Low Pressure Proportional Injection System

Regular Price: $1,470.00
Sale Price:
  • Buy 3 for $885.43 each and save 6%
  • Buy 6 for $836.23 each and save 12%

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Regular Price: $1,470.00
Sale Price:


Stenner 1:128 Low Pressure Proportional Injection System

The M128 pump treats livestock water with sanitizers, disinfectants, nutrients and medications at a fixed rate of one ounce per gallon and is actuated by water flow from a signal from a dry contacting water meter. The pump has a cable with four lead wires; two are connected to the water meter. Installations with a house controller can utilize the two remaining wires to register water consumption to the controller.


  • Water bypass isn’t needed meaning no water restriction or pressure loss
  • No need for back pressure valves and filters upstream to pull out grit, sand and debris
  • Solutions contained in tube, not exposed to pump components or air
  • Accurate and easy to install
  • Simple pump tube replacement
  • Can run dry without damage
  • Can pump off-gassing solutions


  • 1 ounce per gallon up to 8.4 gpm
  • Maximum pressure:  25 psi
  • Maximum operating temperature:  104°F (40°C)
  • Dimensions:  23.5" x 22.75" x 12.5"

Included With Every System:

  • 3 connecting nuts - 1/4"
  • 3 ferrules - 1/4"
  • 1 weighted suction line strainer - 1/4"
  • 1 20' roll suction/discharge tubing - 1/4"
  • 1 additional pump tube
  • 2 additional latches
  • 1 manual

Note:  Due to the custom nature of all Stenner pumps, they are not returnable.  Please make sure you are ordering the correct pump for your application.  If you have any questions, please call or email us before purchasing.

Additional Information

Availability Ships From Manufacturer
Manufacturer Stenner
Pump Type Proportional Systems