S Variable Series Peristaltic Metering Pumps

Stenner S Variable Series Peristaltic Metering Pumps

The Stenner S Variable Series combines the durability of the S Series platform with simple variable-speed operation. Designed for industrial, water treatment, wastewater, and commercial aquatic applications, these pumps provide reliable chemical injection while adding practical features like leak detection, backup pump capability, remote operation, and dedicated status relays.

Available in the S3V, S4V, and S5V models, the S Variable Series offers outputs up to 315 GPD at 25 PSI and 125 GPD at 100 PSI, with a 20:1 turndown ratio for precise flow rate adjustment.

Simple Variable Speed Control

Unlike fully programmable metering pumps, the S Variable Series utilizes a straightforward potentiometer for output adjustment. Pumps operate at the selected speed whenever power is applied or a standby signal is removed.

Key control features include:

• Adjustable potentiometer control

• 20:1 turndown ratio

• Continuous-duty operation

• Variable speed output adjustment

• Remote start/stop capability through standby input

Advanced Monitoring and Protection

The S Variable Series includes built-in monitoring features that provide both pump protection and operating visibility.

Leak Detection

• Factory-installed leak detection system

• Dedicated leak indicator relay

• Optional ability to continue operation after leak detection

• LED leak status indicator

Backup Pump Capability

• Automatic transfer to a backup pump

• Transfer occurs during leak conditions, power loss, or drive faults

• Supports critical chemical feed applications

Dedicated Output Relays

• Leak Detect relay

• Run verification relay

• Transfer relay for backup pump operation

LED Status Indicators

Four integrated LED indicators provide quick visual confirmation of pump status:

• Power

• Run/Fault

• Leak

• Standby/Off

These indicators simplify troubleshooting and system monitoring without requiring a separate controller or display.

Built for Demanding Applications

The S Variable Series incorporates the same rugged construction used throughout the S platform.

Key features include:

• Brushless DC motor with ball-bearing support

• NEMA 4X enclosed housing

• Indoor/outdoor rated design

• Self-priming operation

• Ability to run dry

• Handles off-gassing solutions

• No vapor lock or loss of prime

• Tool-free tube replacement

• ±2% reproducibility

• 2-year warranty

Available Models

• S3V: Up to 85 GPD

• S4V: Up to 150 GPD

• S5V: Up to 315 GPD

Typical Applications

• Water treatment systems

• Wastewater treatment

• Commercial swimming pools

• Cooling tower chemical feed

• Industrial process applications

• General chemical injection systems

By combining simple operation with advanced protection features, the Stenner S Variable Series provides a dependable solution for facilities that need reliable chemical feed without the complexity of a fully programmable control system.