Stenner Econ LD Low-Dose Peristaltic Metering Pumps
The Stenner Econ LD Series is a compact variable-speed peristaltic metering pump designed for applications that require highly accurate low-volume chemical injection. Built around a brushless motor, microprocessor technology, and adjustable output control, the Econ LD delivers precise dosing performance for water treatment, industrial processes, and specialty chemical feed applications.
Engineered for reliability and accuracy, the Econ LD can inject as little as 0.04 oz/hr while maintaining a wide 50:1 turndown ratio. This broad adjustment range allows a single pump to cover a variety of low-flow dosing requirements while providing consistent chemical feed rates across changing operating conditions.
Key Features
- Variable-speed peristaltic metering pump
- Accurate injection as low as 0.04 oz/hr
- Maximum output up to 50.7 oz/hr
- Adjustable potentiometer control
- 50:1 turndown ratio
- Brushless motor design
- Continuous-duty operation
- Patented quick-release pump head
- Tool-free tube replacement
- Self-priming up to 25 feet
- Can run dry without damage
- Indoor/outdoor rated construction
- Available in 120V, 230V, and 24VDC models
Designed for Precision Metering
The Econ LD is specifically designed for applications where small chemical feed rates are critical. Microprocessor-controlled operation and adjustable output allow users to fine-tune dosing rates while maintaining reproducibility of ±2%.
The adjustable potentiometer provides simple flow rate control, making it easy to match pump output to application requirements without complex programming.
Reliable Peristaltic Pump Performance
The Econ LD incorporates many of the advantages associated with peristaltic pump technology, including:
- Self-priming operation
- No loss of prime or vapor lock
- Capable of pumping off-gassing solutions
- Ability to run dry
- Anti-siphon assistance through a 3-point roller design
- No tube lubrication required
Tank System Options
The Econ LD is available as a preassembled Tank System for simplified installation.
Available tank sizes include:
- 7.5 gallons
- 15 gallons
- 30 gallons
Customers can choose UV gray tanks for outdoor installations or white tanks for indoor applications.
Typical Applications
- Flocculant injection
- Coagulant feed systems
- Anti-scalant dosing
- Sanitizer injection
- Low-volume chemical metering
- Water treatment applications
- Specialty chemical feed systems
Combining exceptional low-flow accuracy, adjustable output, and dependable peristaltic pump technology, the Stenner Econ LD Series provides a compact and reliable solution for precision chemical injection applications.

