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Stenner Pumps Classic 45M5 Single Head Adjustable Output Pump 50GPD 45MJL5A2STAA
Stenner Pumps Classic 45M5 Single Head Adjustable Output Pump 50GPD 45MJL5A2STAA
The Stenner Single Head Adjustable Metering Pump delivers precise, self-priming chemical injection for water treatment, ensuring efficiency and reliability.
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The Stenner Single Head Adjustable Metering Pump is a reliable solution for precise chemical injection in water treatment applications. Designed for pH control, disinfection, oxidation, and scale prevention, this pump is ideal for industries such as water conditioning, wastewater treatment, cooling towers, and commercial pools.
Whether you're oxidizing iron, hydrogen sulfide, or manganese for filtration or maintaining proper sanitation levels in pools, this pump ensures consistent and accurate dosing. Engineered with a modular, three-component design, the pump consists of a motor, adjustable feed rate control, and a pump head, allowing for easy maintenance and customization.
The 3-point roller design prevents backflow, siphoning, overdosing, and loss of prime, ensuring efficient and safe operation. With its self-priming peristaltic mechanism, the pump delivers a constant, reliable flow unaffected by outlet pressure, making it a dependable choice for various applications.

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Customers praise the Stenner Single Head Adjustable Metering Pump for its precision, durability, and ease of maintenance.
Many users highlight its accurate chemical dosing, preventing overuse while ensuring effective water treatment.
The self-priming feature receives high marks for eliminating priming issues, and the modular design makes maintenance simple.
Professionals in commercial pool maintenance, wastewater treatment, and industrial processes appreciate its consistent performance and reliability, making it a trusted choice for long-term use.

- Adjustable feed rate control for precise chemical dosing.
- Three-component modular design (motor, feed rate control, pump head) for easy maintenance.
- 3-point roller system acts as a check valve to prevent backflow and siphoning.
- Self-priming peristaltic pump ensures a steady flow, even under pressure.
- Prevents overdosing and loss of prime for safer, more efficient operation.
- Ideal for pH control, oxidation, and disinfection in water treatment.
- Widely used in commercial pools, wastewater management, and industrial processes.

- Brand: Stenner Pumps
- Application: Pool
- Shipping Dimensions: 12 x 8 x 9.25 inch
- Commercial, Residential, or Professional: Commercial
- Each Product Weight: 9 pounds
- Flow Rate: Max: 50 gal/day; Min: 2.5 gal/day
- Frequency Rating: 60 Hz
- Includes: Accessory Kit
- Maximum Suction Lift: 25 feet
- Minimum Sell Quantity: 1
- Pressure Rating: Max: 25 psi; Min: 0 psi
- RPM: 26
- Standards Approvals: CSA Certified, WQA Certified
- Suction Size (Inner Diameter): 0.25 inch
- Temperature Rating:
- UPC Code: 840034708578


Q: How does the adjustable feed rate control improve dosing accuracy?
A: The adjustable feed rate control allows users to fine-tune the chemical dosage based on system requirements. By adjusting the percentage setting, you can optimize flow rates for effective water treatment without overuse or waste.
Q: Can this pump handle different chemical solutions?
A: Yes! The Stenner pump is designed to inject solutions for pH control, oxidation, and disinfection, making it versatile for treating iron, hydrogen sulfide, manganese, and more.
Q: What makes this pump self-priming, and why is it important?
A: The pump's peristaltic design creates a vacuum as the rollers compress and release the tube, ensuring a consistent flow regardless of outlet pressure. This eliminates the need for manual priming and reduces maintenance hassles.




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Stenner Pumps manufactures reliable peristaltic chemical feed pumps used for precise water treatment in pools and spas. Known for easy installation and consistent performance, Stenner systems help automate chlorine, acid, and other chemical dosing. At AquaDoc, we carry a range of Stenner pumps and accessories to support efficient, hands-free pool water management.
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