Shurflo Aqua King II 24V Fresh Water Pump 4138-131-E65
- Brand:
- Shurflo
- Part no:
- 4138-131-E65
Image: Powerboat Supply
Where to buy
Specifications
- Pressure
- 55 psi
- Voltage
- 24V
- Current draw
- 3.8 A
- Port size
- 1/2-14 NPT x 1/2" barb
The Shurflo Aqua King II 4138-131-E65 is a 24 volt pressure-switched fresh water pump built for marine use. It rated at 3 GPM and 55 PSI, draws 3.8 amps, and has a sealed motor and pressure switch in an E-coated housing. A four chamber design gives smooth flow without rapid cycling. It is ignition protected with a thermal breaker, self-primes dry up to 6 feet, and can run dry without damage. Two swivel straight adapters (1/2-14 NPT x 1/2 inch barb) are included, and the 4138 series uses the same mounting bracket as the Aqua King 3901.
Our take
The four chamber design is aimed at avoiding rapid cycling, which means steadier water at the tap instead of pulsing when a fixture is cracked open. Add dry running without damage and 6 foot dry self-priming, and an empty tank is a nuisance rather than a dead pump.
From our buying guide
Size a freshwater pump by the outlets that must run at once. Jabsco's rule of thumb is 1 GPM per outlet, and the listed flow is open flow, which falls as pressure rises.
Check before you buy:
- The data sheet shows flow at pressure. One Shurflo gives 4.0 GPM at 0 psi and 2.0 GPM at 40 psi.
- You have an inlet strainer, which Jabsco says is required in every freshwater pump installation.
- An accumulator suits the pump. Jabsco says one cuts cycling on a pressure-switch system, and not to use its accumulators with variable-speed pumps.