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💧 Power your adventures with quiet, reliable flow—because your water system deserves the best.
The SEAFLO 42 Series Diaphragm Pump delivers a robust 3.0 GPM flow at 55 PSI with 12V power, featuring self-priming up to 6 feet and an internal bypass for reduced cycling and noise. Certified for potable water use and built with durable Santoprene diaphragms and EPDM valves, it’s engineered for marine, RV, and off-grid applications. Backed by a 4-year warranty, this compact pump offers easy installation and long-lasting, quiet performance in demanding environments.































| Asin | B01CQ7DD0S |
| Best Sellers Rank | 66,799 in Sports & Outdoors (See Top 100 in Sports & Outdoors) 30 in Boat Water Pressure Pumps |
| Brand | Seaflo |
| Colour | Orange |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,194) 4.4 out of 5 stars |
| Eu Spare Part Availability Duration | 4 Years |
| Flow Rate | 3 Gallons Per Minute |
| Included Components | 51S01 Filter, 51F01 Fitting |
| Item Dimensions L X W X H | 20.2L x 12.5W x 11.1H centimetres |
| Item Weight | 2.18 kg |
| Manufacturer | SEAFLO |
| Material | Pump head: nylon. Pump head cover: PPS. Motor housing: polypropylene. Valves/seals: EPDM. Diaphragm: Santoprene |
| Maximum Lifting Height | 6 Feet |
| Model Number | SFDP1-030-055-42 |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Part Number | SFDP1-030-055-42 |
| Power Source | Adaptors |
| Product Style | Diaphragm |
| Unit Count | 1.0 count |
| Upc | 647336945584 715934427631 |
| Usage | Marine, RV, Agricultural Spraying, General Industrial, Filtration, Beverage Processing, Solar Water System, Homeowner, Traveling, Construction |
| Voltage | 12 Volts (DC) |
User
Bypass valve is so worth it.
Just amazingly fast shipping. Super nice pump. Had the seaflo 33, which is also great, but it cycles all the time if you only want a trickle out the faucet. This one (42)takes care of that with the bypass. I would always go for the 42 over the 33 unless you just need water for a garden hose. Only downside is that it came with no adaptor plug. Just two loose wires.
User
Abusing this pump and its still going
I work in a quarry and have this for dust suppression on a crusher, been using it the past month now it's dry and it's running 8-12hrs a day 5 days a week. Most it's pumped in 1 day is about 4k litres with the bypass and pressure screwed to the max. It's running 1-4 nozzles (2 sprinkler and 2 hand type. the sprinkler in the picture is giving more water than it looks as its windy and hard to see where its that fine a spray) depending on how dry it is and sucking water out of dusty ibcs. Not much else you can ask of it when the pump it's replaced was 7 grand. The spray from the hand type in the picture is with 3 nozzles turned on at once on a flat setting.
User
Seaflo pump
Good
User
Extremely quiet ...top notch
Replaced my Jabsco pump which was very noisy for this seaflo 42 and what a difference fantastic product and 20 times quieter...I also changed the accumulator which together work perfectly 👌
User
Excellent Product!
Good value price tag for a comprehensive 12v pump Seaflo appears to continue to increase product range and quality year upon year, fair play.
User
Fantastic
Upgraded the noisy shurflo 1.1bar pressure pump in our touring caravan to the seaflo 42 series pump and added an accumulator tankHad to rewire the pressure switch feeds on the pump to suit the wires in the caravan for it to function correctly in my setup,There's no issues with the product atoll,Just had to be wired to work correctly.Fantastic value for moneyLow noise and Fantastic pressure
User
Not as shown
I ordered one as a replacement for one I'm already using Sept 18 and have just got round to using it. I now find that the pipe fittings are not the screw type as shown in the picture, which I need. As I now can't return it as I'm outside the returns window, it's no good to me so 1 star.
User
Ample power, good features
Plenty of power for water main type pressure for garden hose. Bypass feature is great for reduced flow requirements without constantly cycling on and off - although it does a bit when turned right down, but you don't use it that low anyway. Auto off feature works well. I have tried several others and although they have the pressure, they do not have enough flow and they don't have the special features mentioned above.Very pleased with this.
User
Recommended
Purchased with the pump Seaflow accumulator tank- great combination, very smooth consistent water flow and volumes super low. Fantastic purchase
User
Seaflo o melhor
Excelente!
User
detta är vad jag hade planerat
Ja det är vad jag planerat, för mitt kök på landet, bra tryck och lätt ljud, slutar när kranen stängs.Jag giltig.Carina
User
Seaflo 42 Series - Boater Approved
Replaced my boat's (1994 Catalina 320) old 3 chamber Jabsco water pump with this 4 chamber Seaflo 42 series water pump. Features adjustable pressure, by-pass switch, and in-line filter. Operates quietly, with by-pass switch it doesn't cycle in low water use, provides steady stream. Price is very convincing, yet the pump quality and features are very good. It was a plug and play replacement with my old system, didn't need to buy additional parts for the boat's plumbing. Using it happily for the past 3 months without issues.
User
Perfetta
Finalmente si può usare di notte, molto silenziosa, facilissima da regolare
Trustpilot
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