Stenner Pump 45Mjl2A1Staa Adustable - 25Psi, 10Gpd, 120V, 1/4 in - 45M2

Precise, Low-Pressure Chemical Dosing for Pool and Spa Systems

The Stenner Pump 45M2 is an adjustable, inline metering pump engineered for accurate chemical dosing in pool and spa water treatment. Delivering up to 10 gallons per day at a maximum of 25 psi, it runs on 120V and uses standard 1/4" tubing to inject sanitizer, pH adjusters, algaecides, and other compatible liquids from a dedicated reservoir into your circulating line. Its compact design makes it a straightforward retrofit for existing pool or spa chemical-feed setups.

Construction, Compatibility and Integration

Built for reliability in demanding water treatment environments, the 45M2 uses a peristaltic pumping mechanism that minimizes chemical exposure to internal components and simplifies maintenance. The unit is designed to integrate with typical pool and spa plumbing using 1/4" tubing and standard reservoir connections, allowing easy inline installation alongside your pump, heater, and filtration equipment. It is configured for 120V operation, enabling straightforward wiring into common electrical setups near the equipment pad.

Ideal For

• System compatibility: Works with pool and spa chemical feed lines that accommodate 1/4" tubing and compatible reservoir connections.
• Replacement or maintenance context: Field-serviceable design with replaceable tubing and head for easy maintenance and ongoing reliability.
• Performance outcome: Delivers consistent dosing to maintain stable sanitizer levels and balanced water chemistry.
• Installation or configuration context: Inline installation with a simple 120V power connection for quick integration into existing plumbing.

Key Features

• 25 psi maximum discharge pressure
• 10 GPD dosing capacity
• 120 VAC operation
• 1/4" tubing connections
• Peristaltic metering design for chemical compatibility
• Adjustable dosing rate for precise control

Stenner Pumps is a leading name in chemical metering pumps, specializing in durable, precise dosing solutions for water treatment, pool, and spa applications. The 45M2 continues that legacy with a compact, inline design and reliable performance to support consistent water chemistry over time.