Stenner Pump 85MJL5A3STAA Chemical Feed Pump, Single Head,Feeder - 85GPD, 120V, 3/8 inch Tubing

Precise, Reliable Chemical Dosing for Pool and Spa Systems

The Stenner Pump 85MJL5A3STAA is a single-head chemical feed pump designed for accurate metering in pool and spa systems. This 85 GPD unit operates on 120V AC and uses 3/8 inch tubing for its injection line. It integrates into the chemical dosing loop to deliver a controlled amount of concentrate from a reservoir into the circulation line, helping maintain sanitizer levels and proper pH balance.

Construction, Compatibility and Integration

The 85MJL5A3STAA is built for chemical-feed service with a robust peristaltic pumping head. The unit’s single-head design simplifies installation and maintenance, and it accepts standard 3/8" tubing and compatible fittings to integrate into existing pool or spa dosing loops. Materials and seals are selected for resistance to common pool chemicals, helping minimize downtime during service and ensuring consistent performance in routine maintenance.

Ideal For

• System compatibility: Pool and spa dosing systems using standard 3/8" tubing and compatible fittings.
• Replacement or maintenance context: Single-head design simplifies head and tubing replacement during service.
• Performance outcome: Dosing up to 85 GPD provides reliable chemical delivery with proper setup.
• Installation or configuration context: Compact form factor suitable for placement near the circulation panel or in equipment rooms.

Key Features

• 85 GPD dosing capacity
• 120V AC operation
• Single-head MJL metering pump
• 3/8" tubing connections
• Self-priming design for pool and spa chemical dosing systems

Stenner Pump Company is a long-standing leader in chemical-feed technology, focusing on durable, easy-to-service peristaltic pumps for pool and spa, water treatment, and industrial applications. The 85MJL5A3STAA model reflects that legacy, combining reliable performance with straightforward maintenance to support consistent water quality in pool and spa systems.