S4M8XAA4011

Accurate Proportional Injection for Livestock and Agricultural Applications

The Stenner S128 Series is designed for applications that require a consistent 1:128 injection ratio, automatically delivering 1 ounce of product for every gallon of water moving through the system. Activated by a pulse water meter, the pump responds directly to water usage, helping ensure accurate chemical treatment throughout changing flow conditions.

One of the biggest advantages of the S128 is its ability to automatically adjust pump speed as water demand changes. This allows the pump to maintain more even solution distribution, particularly at lower flow rates where accurate dosing can be more challenging. The result is reliable proportional injection without the complexity of a traditional medicator system.

The pump is commonly used in poultry and livestock operations where water treatment products, disinfectants, and other additives need to be delivered consistently through drinking water systems. By utilizing a dry contact water meter, the S128 automatically adjusts dosing based on actual water consumption rather than relying on fixed schedules.

The built-in signal repeater is especially useful for agricultural facilities that monitor water consumption. The repeater allows the same water meter signal to operate the pump while simultaneously communicating with a controller, eliminating the need for additional meters in many installations.

Key Benefits

, Fixed 1:128 proportional dosing

, Automatically responds to changing flow rates

, Compatible with 1 PPG, 10 PPG, and 1 PPL water meters

, Built-in signal repeater relay

, Leak detection with configurable response

, Low-level tank monitoring capability

, Remote standby operation

, Tube change timer and maintenance reminders

, Indoor/outdoor NEMA 4X enclosure

, Brushless DC motor

Maintenance is simple thanks to the tool-free tube replacement design and dedicated standby mode. The standby setting allows technicians to service the pump while maintaining system functionality, including water meter signal repetition.

LED indicators provide quick visual status updates for power, standby, leak conditions, tube replacement reminders, low-level alarms, drive faults, and system overrun conditions. These indicators help operators quickly identify system conditions without extensive troubleshooting.

Performance Highlights

, Fixed 1:128 injection ratio

, Up to 10 oz/min output

, Process water flows up to 10 GPM

, Maximum pressure of 60 PSI

, 25-foot suction lift

, ±2% reproducibility

, Indoor/outdoor rated construction

, 2-year warranty

For livestock, poultry, and agricultural operations that require reliable proportional dosing based on actual water usage, the Stenner S128 Series provides accurate chemical injection, built-in monitoring features, and dependable long-term performance.