Description
Johnson Pump CM90 Circulation Pump | Boat Supply Store
Designed for demanding marine fluid transfer, this 12V circulation pump delivers an impressive 17.2 GPM flow rate while maintaining exceptionally low current draw. Its robust, glass-fiber reinforced PPA body ensures resistance to corrosion and compatibility with freshwater, saltwater, and up to 60% glycol mixtures, ideal for maintaining optimal conditions in livewells or bait tanks. Engineered for longevity, the motor boasts a service life exceeding 5,000 hours and offers 30-minute dry-running capability, providing reliable performance in harsh saltwater environments.
Key Features
- High Flow: Achieve 17.2 GPM for efficient fluid circulation.
- Low Power Draw: Minimizes electrical load on your 12V system.
- Durable Construction: Glass-fiber reinforced PPA body resists corrosion.
- Extended Motor Life: Exceeds 5,000 hours of operational service.
- Versatile Fluid Handling: Suitable for fresh, salt water, and glycol mixtures.
- Dry Running Capability: Withstands up to 30 minutes of dry operation.
- Interchangeable Motor: Facilitates easier maintenance and potential upgrades.
- Compact Magnetic Drive: Efficient centrifugal design with fewer moving parts.
Specifications
| Product Specifications | |
|---|---|
| Flow Rate | 17.2 GPM |
| Voltage | 12V |
| Outlet Size | 3/4" |
| Body Material | Glass-fiber reinforced PPA |
| Liquid Compatibility | Water/glycol mixtures (max 60% glycol), fresh and salt water |
| Motor Service Life | >5,000 hours |
| Dry Running Capability | 30-minute |
| Dimensions | 244mm L x 120mm W x 150mm H |
| Weight | 6.6lbs |
| System Pressure | -0.3 to 3.0 bar, stationary max 4.0 bar |
Who This Is For
This pump is engineered for marine enthusiasts and system designers who require a reliable, high-volume, low-draw circulation pump for various fluid transfer applications. It is an optimal choice for maintaining livewell oxygenation or circulating fluids in bait tanks on saltwater vessels.
How It Compares
| Feature | Johnson Pump CM90 Circulation Pump | Seaflo 33 |
|---|---|---|
| Flow Rate | 17.2 GPM | 3.0 GPM |
| Voltage | 12V | 12V DC |
| Pump Type | Magnetic Drive Centrifugal | Diaphragm |
| Outlet Size | 3/4" | 3/8" or 1/2" |
| Motor Service Life | >5,000 hours | — |
| Dry Running Capability | 30 minutes | — |
| Body Material | Glass-fiber reinforced PPA | ABS, Santoprene, Nylon |
Common Concerns Answered
Why is this pump more expensive than basic bilge pumps?
The Johnson Pump CM90 utilizes a premium magnetic-drive centrifugal design and a robust, corrosion-resistant glass-fiber reinforced PPA body, contributing to its higher flow rate (17.2 GPM) and significantly longer motor service life (>5,000 hours) compared to standard submersible bilge pumps. This advanced construction and durability justify the higher initial investment for demanding, continuous circulation applications.
Does this pump prime itself like a diaphragm pump?
No, the CM90 is a centrifugal pump and is not self-priming. Proper plumbing, ensuring the pump is positioned below the water level or that the inlet is primed, is necessary for optimal performance, unlike some diaphragm pumps.
Is the low current draw worth the higher price for my needs?
If your application requires continuous circulation, such as maintaining livewells or bait tanks, the CM90's 17.2 GPM flow rate combined with its minimal power consumption and superior motor longevity (>5,000 hours) offers significant long-term value and reliability over lower-cost, lower-flow alternatives that may not be designed for such demanding duties.
Frequently Asked Questions
What is the flow rate of the Johnson Pump CM90 Circulation Pump?
The Johnson Pump CM90 Circulation Pump provides a maximum flow rate of 17.2 GPM.
What type of liquids can the CM90 pump handle?
The CM90 is suitable for pumping freshwater, saltwater, and mixtures containing up to 60% ethylene glycol.
What is the expected motor service life of this pump?
The motor in the Johnson Pump CM90 is rated for a service life exceeding 5,000 hours.
Can the CM90 run dry, and for how long?
Yes, the CM90 is capable of running dry for up to 30 minutes.
What are the dimensions and weight of the CM90 pump?
The CM90 pump measures 244mm L x 120mm W x 150mm H and weighs 6.6lbs.
