Shopping Cart

Your cart is empty.

Your cart is empty.

Seaflo 12V DC 5.5GPM 60PSI 55 Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine with Internal Bypass Valve to Reduce Cycling

Free shipping on orders over $29.99

$136.79

$ 62 .63 $62.63

In Stock

About this item

  • Specifications: Model Number: SFDP1-055-060-55 Voltage: 12V DC Open Flow: 5.5 GPM (20.8 LPM) Max Draw: 17A Shut-off Pressure: 60 PSI (4.2 BAR) Priming Capabilities: 9 FT (2.7M) suction lift Max Recommended Temperature: 140°F (60°C) Material: EPDM (Valves) / Santoprene (Diaphragm) Ports: 1/2"-14 MNPT Threaded Noise Level: 65 DB Fixtures Quantity: Up to 6 Leads: 16 AWG, 9" (22.8 cm) long Leads Duty Cycle: Intermittent Warranty: 4-Year Limited Warranty
  • Included Components: (1) SEAFLO 55-Series Diaphragm Pump (1) Set of Installation Instructions (2) 1/2" Barbed Hose Adaptors (1) 50 Mesh Inlet Strainer
  • High Flow Rate with 5-Chamber Diaphragm Design: The SEAFLO 55-Series Diaphragm Pump is engineered with a 5-chamber diaphragm that delivers an impressive flow rate of 5.5 gallons per minute (GPM). This high-volume output ensures that you can supply water to up to six fixtures simultaneously, making it ideal for a wide range of applications, from washing to bathing. The advanced diaphragm design reduces pump cycling, providing a smoother and more consistent water flow. Whether you're using it for your RV, boat, or water purification system, this pump delivers the power and performance you need.
  • Heavy-Duty Pressure Switch with Built-In Bypass: The SEAFLO 55-Series pump is equipped with a heavy-duty pressure switch that provides precise pressure control and stable performance. The built-in bypass function further enhances the pump's efficiency by reducing rapid cycling and allowing water to flow back from the outlet side to the inlet. This feature not only extends the life of the pump but also ensures that your water system operates smoothly and without interruption. The adjustable pressure setting allows you to customize the pressure to suit your specific needs, making it a versatile and user-friendly choice.
  • Self-Priming with Robust Suction Power: Enjoy the convenience of self-priming with the SEAFLO 55-Series pump, which can achieve a suction lift of up to 9 feet. This powerful suction capability ensures that the pump can be mounted remotely from the water source, providing flexibility in installation options. The pump is also capable of running dry without damage, offering peace of mind in case of accidental dry operation. Whether you're drawing water from a tank, well, or other sources, this pump provides reliable performance every time.
  • Quiet and Efficient Operation: Designed for quiet operation, the SEAFLO 55-Series pump runs at a noise level comparable to that of a ceiling fan. This makes it an excellent choice for environments where noise reduction is essential, such as RVs, boats, and off-grid cabins. The pump's semi-rigid rubber base minimizes vibrations, further reducing noise and preventing disturbances. Enjoy a peaceful and comfortable experience while the pump delivers high-power water flow without the constant hum of a noisy motor.
  • Durable and Corrosion-Resistant Construction: Built to withstand the harsh conditions of marine and RV environments, the SEAFLO 55-Series pump features durable materials such as Santoprene for the diaphragm and EPDM for the valves. These materials are known for their abrasion and corrosion resistance, ensuring that the pump can handle both saltwater and freshwater applications without degrading over time. The pump's robust construction ensures long-lasting reliability, even in the most demanding conditions.
  • Automatic On/Off Operation with Smart Pressure Switch: The SEAFLO 55-Series pump is designed for automatic operation, starting and stopping the pump when you open or close a faucet. This intelligent design provides an experience similar to using water at home, with water available whenever you need it without any manual intervention. The smart pressure switch ensures sufficient pressure and flow, making it easy to carry out daily activities such as washing, bathing, or cleaning. The adjustable pressure setting allows you to customize the pressure to suit your specific needs, providing convenience and flexibility.
  • Versatile Applications for RVs, Boats, and More: The SEAFLO 55-Series Diaphragm Pump is a versatile solution for various water system applications, including RVs, boats, yachts, water purification systems, and other liquid transfer tasks. Its high flow rate, robust suction power, and durable construction make it suitable for both freshwater and saltwater environments. Whether you're using it as a washdown pump, potable water system pump, or shower drain pump, the SEAFLO 55-Series delivers consistent and reliable performance across a wide range of applications.


The SEAFLO 55-Series Diaphragm Pump is designed to meet the demanding needs of your water system, providing consistent and reliable performance in a wide range of applications, including RVs, boats, yachts, water purification systems, and more. This 12V DC pump delivers an impressive flow rate of 5.5 gallons per minute (GPM) and a shut-off pressure of 60 PSI, making it a powerful and versatile solution for all your liquid transfer needs. The 55-Series pump features a robust 5-chamber diaphragm design that reduces pump cycling and enhances durability. Equipped with an improved heavy-duty pressure switch and a built-in bypass function, the SEAFLO 55-Series ensures precise pressure control, stable performance, and reduced cycling, all while maintaining a quiet operation. Constructed with premium materials like Santoprene and EPDM, this pump is built to withstand the harsh conditions of marine and RV environments, offering long-lasting reliability.


George Hernandez
Reviewed in the United States on May 27, 2025
Seaflo pumps are garbage. Worse than that they have horrible customer service. I purchased 1and it lasted 3months and it failed.Called customer service and you can't talk to anyone.Made the mistake of buying a second one and that one didn't last 1 month.And I am still waiting for some kind of response on the first one. BAD BAD Business practices.
Adalia smith
Reviewed in the United States on April 22, 2025
Good product
Great price, very easy install!
Reviewed in the United States on April 14, 2025
Great pump, come with filter and ready to install with instructions, perfectly and securely boxed to prevent damage. Very satisfied!
Eric t.
Reviewed in Canada on April 10, 2025
Très bonne qualité
Jerry
Reviewed in Canada on September 3, 2024
This pump is a significant upgrade from the 3gpm 12v pump I had before. I'm using it to provide well water from a sandpoint well to a small cottage. It powers the sinks, toilet, shower and washing machine easily. It is loud though, but all diaphragm pumps are loud. Pulls 15 amps when lifting well water 10 feet.
Lance Shepherd
Reviewed in Canada on September 23, 2024
Damaged package taped up. An antivibration foot is missing.
Alain Duchaine
Reviewed in Canada on September 2, 2024
J’ai achaté la pompe au printemps et installé début juillet . La pompe fontionne mais quand elle s’arrête, c’est comme ci il y’avait un court circuit.Bref tellement déçu du produit, non admissible a un retour ou garantie .
Shopper
Reviewed in the United States on September 16, 2024
I feel that this this pump moves a little too much volume for my 5th wheel. I was previously running a 42 series Seaflo, which was very quiet with less cycling. I upgraded to this one to experiment with the additional volume that this supplies. Showers are definitely more powerful, but even after adjusting the bypass it still cycles a lot on low flow feeds like my RO filter (with a booster pump to insure RO gets enough pressure under all conditions). RO pressure meter fluctuates a lot with this pump.Possibly could be rectified with a accumulator tank to smooth out the cycling and absorb some of the surge from the larger flow. Ultimately I'll probably just revert to the 42 series and keep this one as the spare.No complaint against the actual pump, other than not a excellent match for my application. Seems like a very nice pump.
Sid
Reviewed in Canada on July 31, 2024
Pump works well.It would be better if I had the 4 bolts ti install pump. No fuse to connect to 12 volt on tractor.
Momo khloey
Reviewed in Canada on July 29, 2024
Nous avons acheté plusieurs pompes pour notre chalet et celle ci est la meilleure jusqu'à présent en terme de puissance. Elle est installé dans un cabanon de chalet à l'exterieur et tout est parfait pour l'instant. Nous l'avons depuis quelques mois.
Jas
Reviewed in Canada on February 14, 2024
I purchased this diaphragm pump approximately three months ago with high hopes for its performance. However, I am extremely disappointed to report that it unexpectedly broke down recently. Despite careful usage, the pump failed without warning, leaving me in a difficult situation. As a consumer, I expected a product of this nature to be durable and reliable, but unfortunately, that has not been the case. I would caution others considering this pump to thoroughly research their options and perhaps explore alternative brands or models. Overall, my experience with this diaphragm pump has been disappointing and frustrating.
catherine
Reviewed in Canada on April 6, 2024
The pump itself appears to be well constructed. It was easy to install and replace my original 2014 pump. Time will tell but the original was 3gpm and 55psi and this one is 5.5gpm and 60psi. So I have faith that it will outperform my old pump! Just need to try it for a while and will revisit the review! Thanks
Honest Guy
Reviewed in the United States on September 29, 2017
It is working very well after many months pumping water to my off grid home... and many tens of 1000s of gallons to irrigate about 10 trees on the property. I pump about 20,000 to 25,000 gallons per month. I bypassed the onboard pressure circuit switch within a week. Those never last on these RV style pumps for my application. I use a simple Square-D pump switch for that. It is the pump itself I need to push water at a reasonable rate and pressure for some time. I expect a few years of constant use from this pump. Motor and pump seem very well built. And very quiet when compared to other name brands I have been using for 7 years on this home.
Recommended Products

$47.66

$ 19 .43 $19.43

4.7
Select Option