Stenner S3401 S420 Series Peristaltic Pump, S34 Model 5 GPD 100 PSI with Digital 4-20mA Control Interface.
Stenner S3401 S420 Series Peristaltic Pump, S34 Model 5 GPD 100 PSI with Digital 4-20mA Control Interface.

S3401 Stenner S420 Series Pump - S34 Model

$2,003.77 $1,222.00

Stenner S420 Series Variable Speed Metering Pump | S3401

The Stenner S3401 is a high-pressure, precision-engineered peristaltic pump from the S420 Series. This S34 model is specifically designed for low-volume, high-accuracy applications, delivering a controlled flow of 5.0 Gallons Per Day (GPD) at pressures up to 100 PSI.

Designed for sophisticated water treatment automation, the S420 Series is built to interface directly with external controllers via a 4-20mA analog signal. This allows the pump to automatically adjust its dosing speed in proportion to system requirements—perfect for precise pH adjustment, municipal water disinfection, and high-pressure boiler or cooling tower applications. The digital control pad also allows for simple manual operation and signal scaling for total system flexibility.

Key Technical Features

  • 4-20mA Automated Control: Paces chemical injection automatically based on an external analog signal; ideal for integration with SCADA or PLC systems.

  • High-Pressure Capability: Rated for up to 100 PSI, allowing for injection into pressurized water mains and high-head systems.

  • Smart Monitoring & Safety: Features an integrated leak detection system that automatically shuts down the pump to prevent chemical spills and equipment damage.

  • Programmable Service Alerts: Includes a tube change timer that tracks run time and provides a visual notification on the digital display when maintenance is due.

  • NEMA 4X Rated Housing: The totally enclosed polycarbonate enclosure is built to withstand harsh, corrosive environments and washdown conditions.

  • Reliable Peristaltic Design: Self-priming and engineered to handle off-gassing chemicals (like sodium hypochlorite) without vapor locking. It can safely run dry without damage.

  • Tool-Less Maintenance: Features the patented QuickPro pump head for fast, easy tube replacements without the need for specialized tools.

  • Complete Installation Kit: Includes foot valve, 100 PSI high-pressure injection fitting, weighted suction/discharge tubing, and a spare pump tube.

View manufacturer specs here