Stenner Pumps | 45MJL5A3STAA | Classic 45 Series Adjustable Output Pump 50 GPD

The Stenner Pumps 45MJL5A3STAA Classic 45 Series Adjustable Output Pump is a single-head peristaltic metering pump designed for accurate chemical injection in pool, spa, water treatment, and industrial applications. Rated for up to 50 gallons per day (GPD), this 120V pump features adjustable output control, allowing users to fine-tune chemical feed rates to meet system requirements.

Designed for dependable performance, this pump uses 3/8-inch tubing and Stenner's proven peristaltic pumping technology to provide consistent chemical dosing while minimizing maintenance. It is ideal for chlorine, acid, and other compatible chemical feed applications.

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Key Features

• Delivers up to 50 gallons per day (GPD)

• Single-head adjustable output peristaltic metering pump

• Operates on 120V power

• Designed for use with 3/8" tubing

• Adjustable feed rate for precise chemical dosing

• Ideal for pool, spa, water treatment, and industrial applications

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Product Overview

The Stenner Pumps 45MJL5A3STAA is part of the reliable Classic 45 Series of adjustable-output peristaltic metering pumps. Its adjustable feed rate allows operators to match chemical injection to changing system demands, helping maintain proper water chemistry while reducing chemical consumption. The self-priming peristaltic design isolates the chemical within the pump tube, reducing wear on internal components and simplifying routine maintenance.

This pump is well suited for residential and commercial pools, spas, potable water systems, wastewater treatment, and other applications requiring consistent chemical injection. Using genuine Stenner replacement tubes and maintenance components helps maintain dosing accuracy and extend pump service life. Always verify chemical compatibility, tubing size, and electrical requirements before installation.