Stenner S3403 S420 Series Pump | 40 GPD 25 PSI | 4-20mA Control

Stenner S420 Series Variable Speed Metering Pump | S3403

The Stenner S3403 is a high-performance variable speed peristaltic pump from the S420 Series, designed specifically to interface with automated process control systems. Engineered for precision and durability, this S34 model provides a consistent flow rate of 40 Gallons Per Day (GPD) at pressures up to 25 PSI.

The standout feature of the S420 Series is its ability to dose liquid solutions in direct proportion to an incoming 4-20mA analog signal. This makes the S3403 the ideal choice for water treatment applications that require automatic chemical adjustment, such as pH and ORP monitoring, cooling tower biocide injection, and municipal wastewater treatment. For added flexibility, the operator can 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 paces chemical injection based on an external analog signal for precise automation.

• Dual Control Modes: Operates via 4-20mA signal or manual speed control for maximum versatility.

• NEMA 4X Enclosure: Totally enclosed polycarbonate housing protects the pump in harsh industrial or outdoor environments.

• Smart Performance Indicators: Features built-in leak detection and a tube change timer to ensure proactive maintenance and system safety.

• Self-Priming Design: Peristaltic technology prevents vapor lock from off-gassing chemicals like sodium hypochlorite and allows the pump to run dry without damage.

• Maintenance Friendly: Patented QuickPro pump head allows for rapid, tool-less tube replacement.

• Complete Installation Kit: Package includes a foot valve, injection valve, and weighted suction/discharge tubing.

View manufacturer specs here