Description
Shurflo AQUA KING II 4.0 GPM 12V Water Pump | Boat Supply Store
This Shurflo by Pentair AQUA KING™ II Premium Fresh Water Pump delivers unparalleled "just like home" shower pressure, even at low flow rates, addressing the common boater complaint of inconsistent water delivery. Its heavy-duty, sealed marine-grade motor boasts a 4.0 GPM flow rate and can operate dry without damage, ensuring reliability in harsh marine environments. The integrated mechanical bypass and co-molded diaphragm contribute to its superior performance for multi-fixture fresh water systems, ideal for larger cruising vessels or live-aboards in the Gulf Coast region.
Key Features
- Superior "Just like home" shower pressure delivery.
- Consistent low cycling at reduced flow conditions.
- Variable flow control via built-in mechanical bypass.
- Durable heavy-duty motor designed for the marine environment.
- Corrosion-resistant electro-coated seamless shell motor.
- Reliable dry run capability preventing pump damage.
- Safe ignition protected design for fuel-rich environments.
- Efficient operation with a 4.0 GPM flow rate.
Specifications
| Product Specifications | |
|---|---|
| Voltage | 12VDC |
| Flow Rate | 4.0 GPM |
| Switch Type | 4901 Replacement Sealed Switch |
| Motor Type | Sealed Motor |
| Motor Coating | Corrosion Resistant Electro Coated |
| Pump Chambers | Independent Chambers |
| Check Valve | Built-In |
| Diaphragm | Co-Molded |
| Switch & By-Pass | Adjustable |
| Self-Priming Height | Up to 6 Feet |
| Dry Run Capability | Yes |
| Thermal Protection | Thermally Protected |
| Ignition Protection | Ignition Protected |
| Certifications | CE certified |
Who This Is For
Ideal for boat owners with multi-fixture fresh water systems demanding consistent, high-pressure output, particularly those seeking a "just like home" showering experience. This pump is suited for vessels requiring reliable performance even under variable flow demands.
How It Compares
| Feature | Shurflo AQUA KING II 4.0 GPM 12V Water Pump | Seaflo 21 |
|---|---|---|
| Flow Rate | 4.0 GPM | 4.0 GPM, 4.0 GPM |
| Voltage | 12V DC | 12V DC, 12V DC |
| Dry Run Capability | Yes | Yes, Yes |
| Adjustable Switch & Bypass | Yes | No, No |
| Motor Construction | Sealed Motor, Electro-Coated Seamless Shell | Standard Motor, Permanent Magnet DC Motor |
| Ignition Protected | Yes | Yes, Yes |
Common Concerns Answered
Are there known issues with the pressure switch calibration?
While generally highly reliable, some users have reported occasional minor calibration adjustments for the pressure switch to achieve their preferred pressure settings. This is typically a simple tuning process.
How does diaphragm wear affect performance over time?
The Shurflo AQUA KING™ II utilizes a robust co-molded diaphragm. Occasional reports of diaphragm wear are noted over extended periods of very heavy use, but the overall design prioritizes longevity and consistent performance.
Is this pump a worthwhile investment compared to lower-cost options?
Yes, the AQUA KING™ II justifies its price point through premium features like the adjustable bypass for variable flow, a superior sealed motor construction for enhanced durability in marine environments, and its ability to provide "just like home" shower pressure, features not typically found in basic models.
Frequently Asked Questions
What is the maximum flow rate for the Shurflo AQUA KING II Premium Fresh Water Pump?
The Shurflo AQUA KING II Premium Fresh Water Pump provides a maximum flow rate of 4.0 gallons per minute (GPM).
Can this pump operate without water in the system?
Yes, this pump is designed with dry run capability, meaning it can run dry without sustaining damage.
Is an accumulator tank mandatory for this pump's operation?
While not strictly mandatory, an accumulator tank is recommended to further enhance pressure consistency and reduce pump cycling, particularly in systems without an adjustable bypass. However, the built-in mechanical bypass does offer some variable flow control.
What type of motor is utilized in this Shurflo pump?
This pump features a heavy-duty, sealed marine-grade motor with a corrosion-resistant electro-coated seamless shell for enhanced durability in the marine environment.
Does this pump meet safety standards for use in potentially flammable atmospheres?
Yes, the Shurflo AQUA KING II Premium Fresh Water Pump is ignition protected, making it safe for installation in areas where flammable vapors may be present.
