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  1. RV Water Pump
  2. Seaflo
  3. Diaphragm Pump
  4. 12V
  5. 3.0 gpm
  6. 55 psi
Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - 3 GPM - 55 psi - 12V DC
Seaflo

Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - 3 GPM - 55 psi - 12V DC

Part Number: SE57FR
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$69.99
RV Water Pump
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Enjoy the comfortable water pressure of home with this self-priming, on-demand water pump. Supplies consistent water flow for up to 4 fixtures. Includes a check valve to prevent backflow. Great Prices for the best rv water pump from Seaflo. Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - 3 GPM - 55 psi - 12V DC part number SE57FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (74)
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Seaflo RV Water Pump - SE57FR

  • Diaphragm Pump
  • 12V
  • 3.0 gpm
  • 55 psi
  • Seaflo
  • 4 Fixtures
  • 140F
  • 60C

Enjoy the comfortable water pressure of home with this self-priming, on-demand water pump. Supplies consistent water flow for up to 4 fixtures. Includes a check valve to prevent backflow.


Features:

  • Water pump provides a consistent flow of fresh water in your RV or boat
    • Comfortable water pressure makes your RV feel like home
  • 4-Chamber diaphragm ensures high-volume water flow for up to 4 fixtures
    • Durable, abrasion- and corrosion-resistant santoprene construction
  • Self-priming unit removes air from pipeline, preventing delays and water spitting out of the faucet
    • Unit can be hidden from view because it doesn't require manual priming
  • Internal check valve prevents backflow contamination of your clean water supply
  • Automatic start-and-stop pressure switch helps prevent damage to the pump
    • Shuts the unit off if it becomes overloaded and starts to overheat
    • Turns the unit back on once core temperature reaches a tolerable level
    • Made for intermittent duty, but can run dry during priming without damage to the unit
  • Quiet operation - comparable to an indoor electric fan
    • Semi-rigid rubber base minimizes vibrations and is tear and corrosion resistant
  • Durable, energy-efficient, copper-core motor generates minimal heat
  • Enclosed housing and sealed switches prevent damage caused by moisture
  • Included filter prevents debris from entering and damaging the unit
  • Simple installation
    • Connects to standard NPT connections - includes hose barb fittings for 1/2" hoses too
    • Mounts in any position using bolts (hardware not included)
    • Can be mounted in a location higher than the water tank
  • Compatible with 12V DC systems


Specs:

  • Overall dimensions: 8" long x 4-15/16" wide x 4-3/8" tall
  • Mounting hole pattern (center to center): 2-7/8" long x 3-1/4" wide
  • Ports:
    • Inlet 1/2"-14 male PT
    • Outlet: 1/2"-14 male NPT
  • Maximum power draw: 7.5 amps
  • Flow: 3 gallons per minute (GPM)
  • Maximum pressure: 55 psi
  • Maximum water temperature: 140 F
  • 4-Year limited warranty


A water pump is needed to get the water from your RV or boat's fresh water holding tank up to your faucets. This automatic pump from Seaflo not only performs this task, but it also ensures a consistent flow and high-volume output for up to 4 fixtures. This means you can run your shower and your kitchen faucet at the same time without losing pressure. It's also energy efficient and runs quietly.


Seaflo pumps for RV fixtures

No-Mess Self-Priming

There are 2 types of pumps you can get for your RV: one that requires manually priming every time you run your fresh water tank dry, and one that primes automatically. Manual priming requires that you pour water into the pump, which can be inconvenient and messy. This pump primes itself, keeping you and your RV clean and dry.


Worry-Free Operation

Seaflo uses an automatic start-and-stop pressure switch that lets the pump run dry long enough to self-prime. If you turn your water on and realize you've unknowingly run your fresh water tank dry, the pump can run dry without damage while you shut the faucet and the pump off. The pressure switch also protects the pump motor from overheating when the water has been on for a while. So, if one of your kids leaves the faucet on, you're going to town with the washdown hose, or your teen takes a long shower (despite your asking them to conserve water), the pump will kick off when it starts to get hot. Once the motor has cooled, it will automatically come back on if the faucet or shower is still turned on.


To use this pump once it's installed, you only have to turn the water on!


Quick Tips: Some of our neighbors suggest unplugging this pump when you're traveling to prevent it from turning on accidentally if your faucets shake. And some of our feline-loving friends also recommend unplugging the unit any time you leave your cats unsupervised.


Installation

This pump can be installed on the floor, under a cabinet, or on the wall. Because this pump has a vertical, priming lift, you can install it up to 6' above your fresh water tank. Just make sure to measure 6' from the bottom of your holding tank. This is where the intake fitting will sit.


Pump feet and mounting pattern

Once you've determined the pump's location, it can be secured to its new home with 4 screws (not included).


Filter

A filter is included to prevent debris from entering the pump. To install this, just screw it inline with the inlet port.


The fittings on this pump are male NPT ports. Screw the 1/2"-14 NPT hose barbs onto the pump fittings. The hose barb fittings have wingnuts to make it easy to turn the fittings by hand. Once you have the tubing (sold separately) in place on the hose barbs, add hose clamps (sold separately) for extra security.


Fill your fresh water tank and turn your water faucet on to clear the lines of air. The pump should kick on immediately, but because self-priming can take up to a minute to complete, give it a little time to start producing water at the faucet.



SFDP1-030-055-42 Sea Flow 42-Series Diaphragm Pump for Boats and RVs - Variable Flow - Up to 3 GPM - 1/2"-14 MNPT - 12V





Customer Satisfaction Score:


Customer Reviews

Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - 3 GPM - 55 psi - 12V DC - SE57FR

Average Customer Rating:  4.7 out of 5 stars   (74 Customer Reviews)

Enjoy the comfortable water pressure of home with this self-priming, on-demand water pump. Supplies consistent water flow for up to 4 fixtures. Includes a check valve to prevent backflow.

by:

The box was opened and smashed when it arrived. I have no idea if something was damaged or parts are missing.

Etrailer Expert

Jenny N.

3/21/2024

I am sorry that it arrived that way. I will have our Customer Service team reach out to you. If anything is missing or damaged, we can replace it for you.



by:

Well, what a difference with this water pump. This pump certainly did live up to the reviews! It’s quiet and was very easy to install. So happy with it.



by:

I give SeaFlo thumbs down for very slow responses to a problem with the pump. I called and emailed many times. The first unit had a bad pressure valve and a bad check valve. I asked etrailer to contact SeaFlo to request a replacement and etrailer did that and called me back in five minutes to say SeaFlo would relace the bad unit. The replacement is working great, is quiet and did not require any adjustments. The first unit had a bad pressure valve and a bad check valve.



by:

On time and as described. Perfect.



by:

Fast delivery. Product delivered in great shape. Already installed, quick and easy. Very quiet pump. Highly recommend.



by:

We’ve ordered in the past, and once again, the service and help in purchasing the correct part was excellent. Paul was very knowledgeable and a great person to deal with. Will definitely order items in the future!



by:

Very easy 15 minute swap out.



by:

Works fine



by:

installed and working !



by:

This was an easy install and it still works great.



by:

Works great. Very easy to install. If only crawling into the pump locations was as easy.



by:

Worked perfect for my application.



by:

Great quality product like all etrailer.com products in my opinion.



by:

The pump is very nice and quiet! My wife is extremely happy! I subtracted one star for the fittings, they both leaked! A small o ring in the fittings fixed the leaks!



by:

Works great and its very easy to install. Worth the price.



by:

Easily installed. Very,very quiet pump. You don’t even know it’s running. Good flow of water. I will certainly recommend this water pump to everyone, And I’ll tell them to get it from e-trailer. Really fast delivery.



by:

Bought to replace a leaking Artis products pump. So far, so good. Arrived today 2/17 and installed shortly after. Definitely quieter than the one I just took out. I have had great service and fast shipping from etrailer! Thanks!



by:

Installed it in an outdoor shower at the cabin. It's working great off of a small solar powered battery



by:

The pump was easy to install and works as expected.



by:

Easy replacement, & I am liking the 4 year warranty



by:

It was a perfect replacement for our original pump. It worked immediately after installing it.



by:

Direct replacement quiet operation



by:

Best water pump I have ever had reallly happy with it thanks you guys are great.



by:

Exactly what I needed and ordered. Thank you



by:

Jim

10/8/2023

Still going strong. Quiet pump.

Etrailer Expert

Mike L.

10/24/2023

@Jim That's great! We're glad your # SE57FR pump is still on the job!

25
74
Show More Reviews

See what our Experts say about this Seaflo RV Water Pump

  • Recommendations For Replacing RV Water System Components
    I drew up a little diagram of how RV water systems are typically designed and attached it below to make it easier for you to see each component. I believe what you're referring to is simply just the fresh water tank drain, which you could use part # CAM22243 to tie into your tank and allow it to drain. The Anti-Siphon valve # A01-0141VP you were looking at simply connects to a Valterra Hydroflush # F02-4100 for you to hook up a garden hose and clean out your black tank. For the fresh...
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  • Can the psi be of the Seaflo 60 psi Diaphragm Pump Be Adjusted
    No, the Seaflo Diaphragm Pump, # SE24FR is a 12 VDC pump that flows up to 5.5 gallons per minute and pressure setting at 60 psi. This is a variable flow based on demand, there is not an adjustable setting on the unit itself to make changes. If you are needing your pump to be within the 45-55 psi range you would want to go with one of the below pumps: - Seaflo Diaphragm Pump for Boats and RVs # SE58FR (45 psi) - Flow Max RV Fresh Water Pump # LC689052 (50 psi) - Seaflo Diaphragm Pump...
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  • Recommended Replacement For A Shurflo 4008-101-F65 RV Water Pump
    Hi Dorothy, The Seaflo Diaphragm Pump # SE58FR would be a compatible replacement for your Shurflo 4008-101-F65, but it has a lower psi rating so you'd see a bit of a drop in pressure. Instead I recommend going with the Seaflo # SE57FR. This unit has a 3.0GPM, 55 psi rating, and operates on 12v DC power. Everything I can find on the 4008-101-F65 shows it being 12v DC but we can clear p any confusion by checking where it gets power from. If it runs to the battery or to a fused port on the...
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    The Seaflo Diaphragm Pump for Boats and RVs # SE58FR has the same 45 psi rating as the Shurflo 4008-101-A65 so it would be the closest match, but as long as your setup is able to take the higher 55 psi pressure rating of the Seaflo Diaphragm Pump # SE57FR then it will be perfectly fine to use. The GPM rating is still 3 though so the only real difference between the two is the psi rating.
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  • What To Do When Your Freshwater Tank Is Filling Up When On City Water
    If your freshwater tank is filling up with water when on city water then the gasket inside your water pump has failed and is allowing water to backflow. This is typically caused by not using a regulator # A01-1124VP on high pressure city water systems, improper winterization allowing water to freeze in the pump, or the gasket just failed due to age/usage. You'll want to check the psi and gpm listed on your current pump so that you can determine the correct replacement. I've attached a...
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  • Quieter RV Water Pump Recommendation
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  • How To Select a Replacement Water Pump For a Heartland Mallard M201RB Camper
    While I have no way to look up exactly what water pump was installed on your Mallard M210RB it basically just comes down to the water pressure the pump is rated for. Here are our different common psi rated pumps you can match up with yours. 35PSI # SE37FR 45PSI # SE58FR 55PSI # SE57FR 60PSI # SE24FR
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Do you have a question about this RV Water Pump?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Alexander C
Written by:
Alexander C
Employee Jonathan Y
Video by:
Jonathan Y
Employee Michael B
Installed by:
Michael B
Employee Clayton O
Test Fit:
Clayton O
Employee Kevin C
Test Fit:
Kevin C
Employee Noah M
Updated by:
Noah M
Employee Sabrina W
Updated by:
Sabrina W

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