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Low Dose | Econ LD Series

Econ LD Pumps

The Econ LD is a low dose, compact, peristaltic pump for a variety of applications.


Flow Rate Outputs
0.04 to 50.7 oz/hr, pressures to 80 psi max.
1.3 to 1499.4 mL/hr, pressures to 5.5 bar max.

The Econ LD is for precise low volume injection.

The Econ LD is a precise, compact, variable speed, peristaltic pump designed for reliably metering low volume amounts. The quiet, long lasting brushless motor, in a totally enclosed housing, offers premium quality at an economical price. The LD series incorporates the latest microprocessor technology with a simple potentiometer to control outputs with a 50:1 turndown.  The outputs range from 0.04 to 50.7 ounces per hour, with pressures to 80 psi (1.3 to 1499.4 ml/hr, pressures to 5.5 bar).

Ideal for pumping flocculants, coagulants, sanitizers, and a variety of solutions. Markets and applications include but are not limited to injecting antiscalants for reverse osmosis systems, flocculants for pools as a filter aid, reagents for specialty applications or additives for industrial processing.

Unique Stenner Features

  • Patented Quick Release Pump Head for tube replacement without tools. VIEW VIDEO
  • Solid one piece tube construction
  • Attach the pump to a wall or select from optional mounting accessories

The pump tube is manufactured in one operation providing a durable connection and one piece tube construction. The peristaltic pump head has a three point roller design and is self-priming up to 25 feet.  The patented quick release pump head is designed for effortless tube replacement. When replacing the tube, tools and tube lubrication are not required.

Advantages of the Econ LD

  • Solution is not in contact with moving parts and runs through a food grade pump tube
  • Pump head requires no valves, allows for easy maintenance
  • Self-priming against maximum working pressure, foot valve not required
  • Pump does not lose prime or vapor lock
  • Pumps off-gassing solutions and can run dry
  • Output volume is not affected by back pressure
  • Totally enclosed
  • cULus for indoor/outdoor use
  • Internal power supply
  • CE listed, varies by model
  • NSF 61 & 372

Econ Pump General Installation Video
Econ Pump Tube Replacement Video

Product Manual


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Flow Rate Outputs – 80 psi (5.5 bar) maximum

Item No.
Turndown Ratio
per Hour
per Hour
Approximate Outputs @ 50/60Hz
0.11-8.13.2 -240.0
0.50 to 25.114.8 to 742.3
1.01 to 50.729.7 to 1499.4

NOTE: Injection check valve included with pumps rated to 80 psi (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 ControlPotentiometer, 50:1 Turndown
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)17
Duty CycleContinuous
Maximum Viscosity50 Centipoise
Motor Voltage 120V 60Hz (0.25A), 230V 60Hz(0.17A), 230V 50Hz (10W)
Power Cord Type120V 60Hz, 230V 50Hz: SJTOW, 230V 50Hz: H05RN-F
Power Cord Plug End120V 60Hz: NEMA 5-15P, 230V 60Hz: NEMA 6-15P, 230V 50Hz: CEE7/7
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

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

Pump Dimensions

Econ LD Pump Dimensions

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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