1. RV Water Pump
  2. Seaflo
  3. 3.0 GPM
  4. Diaphragm Pump
  5. 12V
  6. 55 psi
Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - Up to 3 GPM - 1/2" MPT - 12V

Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - Up to 3 GPM - 1/2" MPT - 12V

Item # SE57FR
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Our Price: $69.99
RV Water Pump
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Self-priming, automatic-demand water pump supplies consistent water flow for up to 4 fixtures. 4-Chamber diaphragm provides high-volume water flow with reduced cycling. No accumulator tank necessary. Works with fresh or saltwater. Lowest Prices for the best rv water pump from Seaflo. Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - Up to 3 GPM - 1/2" MPT - 12V part number SE57FR can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (18)
  • Q & A (2)
  • Videos (2)
  • Photos
  • Why etrailer?

Seaflo RV Water Pump - SE57FR

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

Self-priming, automatic-demand water pump supplies consistent water flow for up to 4 fixtures. 4-Chamber diaphragm provides high-volume water flow with reduced cycling. No accumulator tank necessary. Works with fresh or saltwater.


Features:

  • Water pump provides consistent flow of fresh water in your boat or RV
  • Variable flow technology allows the pump to provide the amount of water you demand without cycling
  • 4-Chamber diaphragm provides high-volume water flow to up to 4 fixtures
  • Self-priming design eliminates air binding by removing air from the pipeline
    • Unit is capable of up to 6' suction lift (vertical priming)
  • Built-in pressure switch starts and stops the pump when faucet is opened and closed
  • Heavy-duty, corrosion-resistant motor runs dry without causing damage
  • Semi-rigid rubber feet reduce excessive vibration or noise
  • Enclosed housing with sealed switches blocks moisture from getting in
  • Bolt-on installation in any position
    • Hardware not included
  • Hose barbs attach to 1/2" tubing


Specs:

  • Overall dimensions: 8" long x 4-15/16" wide x 4-3/8" tall
  • Voltage: 12 volts DC
  • Maximum power draw: 7.5 amps
  • Flow: 3 gallons per minute
  • Pressure setting: 55 psi
  • Maximum water temperature: 140 F
  • 4-Year limited warranty


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





Video of Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - Up to 3 GPM - 1/2" MPT - 12V

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Seaflo RV Fresh Water - 4 Fixtures Diaphragm Water Pump - SE57FR

Hi there I'm Michael with etrailer.com. Today, we're going to take a quick look at the Seaflow diaphragm pump. This is going to provide a consistent high volume flow of fresh water to up to four fixtures in your boat or RV. This uses a variable flow technology to help provide the amount of water that you need without having to cycle. So basically when your faucet is turned to the open position, the built-in pressure switch is going to start the pump. And then when you turn your faucet to closed, it's going to stop the pump.

It does have a four chamber diaphragm that's going to provide up to three gallons per minute of flow at 55 pounds per square inch of pressure. So it's going to be basically the same thing as your home faucet, maybe even a tad bit higher. So you won't feel like it's just trickling out. It's going to give you the same pressure that you're used to.This does have a self priming design that removes air from the pipelines, help eliminate air binding. So you're not going to get the spluttering that you sometimes get with pumps when there's air in the lines.

This unit is capable of up to six foot lift. So if you have this underneath your sink and you're wanting it to push the water up to your shower head, you're going to have six feet of room to work there. This does have a heavy duty corrosion resistant motor, which is going to run dry without causing any sort of damage. Our hose attachments here, our hose barbs, attach to half inch inner diameter tubing. When you are installing this, you want to make sure that you're leaving enough room so that you're not crimping your tubes, you're going to have a nice gentle corner if you are making an angle.As far as the installation goes, this is a bolt-on installation.

So you can see our feet here have bolt holes there to get it in place. It can be mounted in any orientation. The hardware is not included with this. So you will have to provide that for yourself. One thing to note, because electricity and water obviously don't mix very well, it is recommended that you keep the motor above the water portion of the pump if you are going to be mounting it vertically like this.Obviously, when you're installing, you want to make sure that it's going to fit.

So as far as our dimensions go, this is right at about eight and a half inches long. When we have all of our fittings installed here, it's going to be about 10 and a half inches wide.And again, you do want to make sure that you're going to have enough room for your pipe tubing to be attached there. And then for our height, right at four and three eights, just over four and a quarter of an inch. And our mounting distances from center to center of our mounting holes here are right at about three and a quarter of an inch and two and seven eighths of an inch there. Now these feet are a semi-rigid rubber and that's to help to absorb any excess vibration or noise. So when you're installing this, you do want to make sure that you're not tightening it down so much that you're causing that rubber to compact. You want to make sure that it's going to have the full ability to absorb that vibration.This is going to work for your 12 volt DC systems. It is only going to draw about 7.5 amps, so shouldn't pick up much power at all. It does have an enclosed housing with sealed switches that help to block moisture from getting inside. But as I said earlier, you just want to take the extra precaution to make sure that your water isn't going to be in a position where it can drip down.This does have a maximum water temperature that it can handle, 140 degrees Fahrenheit, which is actually 20 degrees warmer than the Consumer Product Safety Commission recommends for your water heater. So it should be able to handle just about as hot as you can handle essentially. So you're going to have nice warm showers and nice hot water to wash your hands and everything that you need. So keep in mind, this is going to provide that pressure for up to four fixtures. If you do need a little bit more, if you've got more fixtures that you're wanting to get water pressure to, we do have other options here at etrailer.com that go up a little bit higher, so you might want to check those out. But if you're only needing the four, this is going to be a great option for you. So that's going to complete our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.


Customer Reviews

Seaflo Diaphragm Pump for Boats and RVs - Variable Flow - Up to 3 GPM - 1/2" MPT - 12V - SE57FR

Average Customer Rating:  4.8 out of 5 stars   (18 Customer Reviews)

Self-priming, automatic-demand water pump supplies consistent water flow for up to 4 fixtures. 4-Chamber diaphragm provides high-volume water flow with reduced cycling. No accumulator tank necessary. Works with fresh or saltwater.

- SE57FR
by:

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



- SE57FR
by:

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



- SE57FR
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.



- SE57FR
by:

Looks to be a high quality pump.good price just what i wanted to replace old unit



- SE57FR
by:

Installed on a 1970s Ken-Craft great pressure easy to install.



- SE57FR
by:

Quiet, powerful ez install what more can one say



- SE57FR
by:

Easy order process. Got pump very quick. Haven’t installed yet but tested and very satisfied with its performance



- SE57FR
by:

It does what it's supposed to do, a little noiser then I hope it would be.



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Ask the Experts about this Seaflo RV Water Pump

  • Is Seaflo Diaphragm Pump a Good Pump Replacement for Shurflo 4028-100-E54
    Yes the Seaflo Diaphragm Pump for Boats and RVs # SE57FR would be a great replacement for the Shurflo 4028 that you have now. It'll be quieter and also provide more water pressure while also being an easy install.
    view full answer...
  • Difference Between, and Power Supply for Seaflo Diaphragm Pump
    The difference between the two pumps is that the Seaflo Diaphragm Pump for Boats and RVs # SE58FR has a 3-chamber diaphragm for water flow up to 2 fixtures, while the Seaflo Diaphragm Pump for Boats and RVs # SE57FR has a 4-chamber diaphragm for water flow for up to 4 fixtures. In regards to power supply, according to the manufacturer these each require their own dedicated circuit and are 12 volt only, with the red lead going to the positive terminal of your battery and black lead going...
    view full answer...

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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 by:
Chris R
Employee Alexander C
Written by:
Alexander C
Employee Michael B
Installed by:
Michael B
Employee Clayton O
Test Fit:
Clayton O
Employee Noah M
Updated by:
Noah M

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