S445X Stenner S420 Series Pump - S44 Model

Stenner S420 Series Variable Speed Metering Pump | S445X The Stenner S445X is a heavy-duty, high-capacity peristaltic pump from the S420 Series, specifically engineered for high-volume chemical dosing in automated environments. As an S44 model, this unit is designed for maximum output in low-pressure systems, delivering a powerful 150 Gallons Per Day (GPD) at pressures up to 25 PSI. This pump is built for industrial-scale automation, featuring the ability to pace chemical injection in direct proportion to an incoming 4-20mA analog signal. This makes the S445X the ideal solution for large-scale water treatment applications, including municipal wastewater disinfection, large cooling tower systems, and high-volume pH adjustment. The digital control interface allows operators to easily scale the pump's response to the signal or switch to manual mode for constant flow requirements. Key Technical Features 4-20mA Signal Response: Automatically adjusts dosing speed based on an external analog signal for precise, hands-off system automation. 150 GPD High Capacity: One of the highest flow rates available in the S Series, perfect for high-demand chemical feed applications. NEMA 4X Rated Protection: The totally enclosed polycarbonate housing is built to withstand corrosive vapors and harsh washdown environments, suitable for both indoor and outdoor use. Smart Performance Monitoring: Includes integrated leak detection that stops the pump if a tube leak is sensed, along with a programmable tube change timer for proactive maintenance. Brushless DC Motor: Equipped with a continuous-duty motor and ball-bearing support for quiet, reliable, long-term operation. Tool-Less Maintenance: Features the patented QuickPro pump head, allowing for rapid tube replacements without the need for specialized tools. Self-Priming & Gas Handling: The peristaltic design is inherently self-priming, can safely run dry, and will not vapor lock from off-gassing chemicals like sodium hypochlorite (bleach). Complete Installation Kit: Includes foot valve, 25 PSI injection fitting, weighted suction/discharge tubing, and a spare pump tube. View manufacturer specs here