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1:128 Medicator Pump | Econ Stennicator Pump

Econ Stennicator - livestock medicator pump

Stenner's newest medicator pump for the agricultural's livestock sector is the Stennicator. The pump injects livestock supplements straight into the water line at a fixed ratio of 1:128. Watch the Stennicator pump on a farm video.


Flow Rate Output
2.7 ounces per minute up to 80 psi maximum

Injecting straight into the water line sets the Stennicator apart from traditional medicators and water driven proportional pumps.

The Stennicator is adaptable to all existing houses with pulsing dry contact water meters, no additional equipment is required. Watch a fun, animated video to see how.

Typical medicators use water to mix stock solutions needed for injection and are adversely affected by poor water quality such as grit, hardness or iron. Poor water quality does not affect the performance of the Stennicator; the pump injects straight into the water line eliminating garden hose bypasses that restrict flow. In addition, the pump is more than just a medicator, it is compatible with a wide range of livestock or poultry solutions and can inject strong acids and disinfectants without harm to the pumps's moving parts. The chemicals are contained in the peristaltic pump tube and suction and discharge lines. All Stenner peristaltic metering pumps are self-priming and do not lose prime from gaseous solutions.

How the Medicator Pump Works

The Stennicator requires a pulsing dry contact water meter and electricity to operate. The pump is equipped with a wall adapter power supply. The pulse from the water meter activates the pump which has a fixed run time to deliver the proper dosage. The pump has three different pulse settings to accommodate the most common water meters used in the industry; 1 or 10 pulses per gallon and 1 pulse per liter.

Additional features include prime and a standby setting. An internal relay allows the water meter pulse to send the signal to the house controller to register the water consumption. The internal relay continues to send the signal even if the standby setting is used to stop the pump from injecting. The relay feature is also perfect for installations requiring multiple pumps, all of which can be activated by one dry contact pulse water meter, click the following to see the installation diagrams. POULTRY: Water Treatment & 1:128 Dosing and Water Treatment. LIVESTOCK: Water Treatment & 1:128 Dosing and Water Treatment.

Easy Installation of the Econ Stennicator

The Stennicator has a small footprint and can be easily adapted into all existing houses with pulsing water meters.
Click here for a video that illustrates how. An injection check valve is installed into the water line, two lead wires from the Stennicator are connected to the water meter and another two leads are connected to the controller. Suction and discharge lines are secured and the pump is plugged into a 110V outlet. For water flows up to 5.4 gallons per minute, a second Stennicator can be added for a duplex installation. A third pair of leads can be intertwined to cut the run time in half. This allows injection at 1:256 so two pumps can be wired in series to accommodate higher flow rates.

Unique Stenner Features

  • Tube replacement without tools with the patented quick release pump head. VIEW VIDEO
  • Whiteboard animation video illustrates a Stennicator pump on a poultry farm.
  • Strong acids, disinfectants and solids that can attack seals in a medicator, do not affect the tube in a Stennicator.

Econ Pump General Installation Video
Econ Pump Tube Replacement Video
Econ Stennicator Animated Video

Chemical Resistance Guide

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Flow Rate Output Chart 80 psi (5.5 bar) maximum

Item No.Pump
per Minute
per Minute
Approximate Output @ 60Hz

NOTE: Injection check valve included with pumps rated 80 (5.5 bar) maximum.

exclamationNOTICE: The information within this chart is solely intended for use as a guide. The output data is an approximation based on pumping water under a controlled testing environment. Many variables can affect the output of the pump. Stenner Pump Company recommends that all metering pumps undergo field calibration by means of analytical testing to confirm their outputs.
Flow Rate Output Controlon/off switch, fixed output
Maximum Working Pressure80 psi (5.5 bar)
Maximum Operating Temperature104°F (40°C)
Maximum Suction Lift25 ft (7.6 m) vertical lift, based on water
Motor Type24 VDC, brushless
Shaft RPM (average maximum)60
Duty CycleContinuous
Max Viscosity50 centipoise
Motor Voltage (Amp Draw)120V 60Hz (0.17)
External Power Supply100-120VAC, 60 Hz
Power Cord Type120V, 60Hz: STP-2W
Power Cord Length10 ft (3.05 m)
Power Cord Plug EndWall adapter, Class II power supply: 100-120V, 60Hz:
1.0A maximum input, two prong, polarized 24VDC, 1.25A output
EnvironmentIndoor / outdoor
Materials of Construction 
All HousingsPolycarbonate
Pump Tube & Check Valve DuckbillSantoprene®*, FDA approved
Pump Head RollersPolyethylene
Suction/Discharge Tubing
and Ferrules
Polyethylene, FDA approved
Tube and Injection FittingsPVC or Polypropylene, NSF listed
Connecting NutsPVC or Polypropylene, NSF listed 
Suction Line Strainer and CapPVC or Polypropylene, NSF listed, with Ceramic Weight                      
All FastenersStainless steel

Agency Listings

Agency Listings

* Santoprene® is a registered trademark of Exxon Mobil Corporation.

Pump Dimensions

Econ Stennicator

Shipping Weight: 4 lbs (1.6 kg)

Box Dimensions: 8 x 8 x 10 in. (21 x 21 x 25 cm)

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