Stenner Pump 45MJL5B1STAA Chemical Feeder Pump - 50GPD, 220V, 0.25 in

Precise 50 GPD chemical dosing for pool and spa systems

The Stenner Pump 45MJL5B1STAA is a 50 gallons-per-day chemical feeder pump designed to inject sanitizers and treatment chemicals into pool and spa circulation systems. Operating at 220V and using 0.25 in tubing, this unit delivers reliable, maintenance-friendly dosing within standard Stenner MJL-based installations. It serves as a dependable replacement pump or as part of a new pool or spa chemical feeder setup, helping maintain consistent chemical delivery in your system.

Construction, Compatibility and Integration

The 45MJL5B1STAA features a robust design built for continuous operation in chemically treated water environments. It is compatible with standard 0.25 in ID tubing and integrates with Stenner MJL dosing assemblies, enabling straightforward installation in existing pool or spa feeder setups. With a 220V power requirement, the unit is suited for equipment rooms or service panels that supply typical pool and spa infrastructure. As a direct replacement option within the 45MJL family, it supports upgrading or refreshing older pumps with minimal downtime.

Ideal For

• System compatibility: Works with Stenner MJL-based chemical feeders and standard 0.25" ID tubing used in pool and spa dosing.
• Replacement or maintenance: Replacement pump for 45MJL series installations, simplifying service swaps.
• Performance outcome: Delivers up to 50 GPD to help maintain consistent sanitizer and chemical levels in pool and spa circuits.
• Installation or configuration: Inline installation with 220V power in typical equipment cabinets or pump skids.

Key Features

• 50 GPD dosing capacity for medium-demand pool and spa chemical feeds.
• 220V AC operation standard for many pool/spa service panels.
• 0.25 in ID tubing compatibility for easy integration with common feed lines.
• Peristaltic pumping action provides chemical containment within tubing, reducing leak paths and simplifying maintenance.
• Direct replacement for 45MJL family pumps, designed for compatibility with Stenner MJL dosing systems.

Stenner Pump Company is a long-established leader in peristaltic dosing pumps, focusing on dependable, easy-to-service chemical feed solutions for pool and spa brands as well as broader water-treatment applications. Their pumps are known for straightforward maintenance, durable construction, and predictable performance across a wide range of treatments.