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Everflo EF5500-BOX 5.5GPM 12V Diaphragm Pump-1/2 FNPT Connection, 5.5 GPM, Black

  • Based on 3,372 reviews
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Availability: In Stock.
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Arrives Friday, May 29
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Size: 5.5 GPM


Style: FNPT Ports


Features

  • 12V pump that can handle up to 5. 5GPM & 60 psi
  • Self priming up to eight feet
  • Approved For use with agricultural applications
  • Fiberglass-reinforced polypropylene pump manifold with 12 FNPT Port
  • Standard mounting pattern to fit most sprayer tanks
  • Replacement 12 Volt diaphragm pump for variety of makes and models
  • Can be used for other fluid transfer applications such as disinfectants and sanitizing
  • Corrosion resistant Viton valves and Santoprene diaphragm
  • 12 volt wire harness sold separately

Description

When it comes to spot & broadcast spraying, the Everflo 12V 5. 5 GPM on-demand 12V diaphragm pump is the king of the hill. With premium components & cutting- edge engineering, Everflo provides the flow You need. This pump is loaded with features such as a Honeywell Micro switch, corrosion resistant Viton valves & Santoprene diaphragm & fiberglass-reinforced polypropylene pump manifold with ยฝโ€ NPT port. Other features include a silky smooth valve design for faster primes & a unique pressure switch that slowly cycles The pump to reduce wear on the motor & switch. Save battery power with the automatic power switch that turns off pump when no flow is needed. Has standard mounting pattern to fit most sprayer tanks. Replacement 12V diaphragm pump for variety of makes & models. Can be used for other fluid transfer applications such as disinfectants and sanitizing (pump will need to be flushed and clean after- use). Handles up to a max of 60 PSI & self-primes up to 8'.

Specs & Other Info

SpecificationDetails
BrandEverflo
ColorBlack
MaterialPolypropylene
Connection TypeFNPT Ports
Dimensions8.75"L x 5.2"W x 4.76"H
Operation ModeManual
Weight6 lbs
Flow RateUp to 5.5 GPM
Lifting HeightMaximum of 8 Feet
Electrical Requirements12V DC
Model NumberEF5500-BOX
Continued AvailabilityNo (Product not discontinued)

Frequently asked questions

To install the Everflo EF5500 pump, first ensure your system is powered off. Mount the pump using its built-in mounting feet, ensuring it's securely in place. Connect the pump to your system using 1/2 FNPT connections for the inlet and outlet ports. Finally, connect the pump to a 12V power source, observing the proper polarity. Always refer to the manual for detailed instructions and safety information.

Yes, the Everflo EF5500-BOX is designed for handling various fluids, including agricultural chemicals. Its robust construction makes it suitable for spraying pesticides, herbicides, and other agricultural chemicals. Ensure the chemicals are compatible with the pump's materials to prevent damage.

To maintain the Everflo EF5500 pump, regularly check for leaks or damage to the pump body and diaphragm. Clean the inlet and outlet filters to prevent clogging. After using chemicals, flush the system with clean water. Periodically check the electrical connections and mounting for security. Refer to the user manual for detailed maintenance guidelines.

Yes, the Everflo EF5500 diaphragm pump is self-priming, offering a convenient setup experience. It boasts a vertical suction lift of up to 12 feet, allowing it to draw water from a depth and facilitating versatile usage in various applications, from agricultural spraying to fluid transfer tasks.

Top Amazon Reviews

๐Ÿš€ Abunda's Overview

This is our summary and key points to consider based on customer reviews.


The product being reviewed is described by various users as both effective and disappointing. While some users find these pumps great for tasks like spraying farm chemicals, roof cleaning, and pressure washing, citing their power and ability to handle caustic chemicals with proper rinsing, others express dissatisfaction with their durability and quality over time. The longevity of the pumps seems to be a significant issue, with some pumps failing within a year or even five weeks, despite the manufacturer's reputation for producing lasting products.

Pros

  • ๐Ÿ‘ Effective for a variety of uses, including farm chemical spraying, roof cleaning, and pressure washing
  • ๐Ÿ‘ Capable of handling caustic chemicals with proper maintenance
  • ๐Ÿ‘ High power output, able to shoot weeds 40 feet away
  • ๐Ÿ‘ Some users report satisfactory performance when the product is properly maintained and rinsed after use

Cons

  • ๐Ÿ‘Ž Durability concerns, with some pumps failing within a year or even just five weeks
  • ๐Ÿ‘Ž Quality has reportedly declined over time, according to long-term users
  • ๐Ÿ‘Ž Issues with connections getting loose over time
  • ๐Ÿ‘Ž Some complaints about receiving products that were dirty or damaged upon arrival

Should I Buy It?

Considering the mixed reviews, purchasing this pump depends on your willingness to maintain it rigorously and your tolerance for the possibility of needing to replace it sooner than expected. If you're using it for professional purposes and it quickly pays itself off, it might be worth the investment. However, for those seeking longevity and reliability above all, exploring other options could be advisable.


  • Has great reviews
Size: 5.5 GPM Style: FNPT Ports
I spent the extra money for a quality pump and this was a huge disappointment. It did work as advertised and I sure did like it, but it made it just over a year and it quit. It no longer works at all and I'm having to replace it. I use these a lot. We spray farm chemicals with them weekly. We do take good care of them but we do use them a lot. I expected this pump to last for at the least several years for the price, but it only lasted about a year. I can buy cheaap pumps with the same GPM and pressure for 1/3 the cost and they last longer. I do not believe I got a good value for my money. ... show more
Reviewed in the United States on May 31, 2021 by Dan D.

  • Good quality
Size: 5.5 GPM Style: FNPT Ports
Works well with softwash setup
Reviewed in the United States on January 3, 2026 by Tylor McKeown

  • Total Junk!
Size: 5.5 GPM Style: FNPT Ports
Purchased this and did everything possible to use it as a soft wash pump. I can only use long range tips, not fan tips. The stream when first purchased was pulsating. It's suggested to turn the psi screw. This was adjusted and it worked fine for about 45 minutes, then nothing. I have used a 12v group 24 battery, that sucked. I used a 16.7 12v waterproof charger, it was a bit better. The pump stopped working in the middle of my job and I noticed the pump would not kick on. I checked the pressure switch and it was faulty plus I noticed a crack in the plastic housing, complete junk. The power switch is supposed to push out when the pump lacks the correct pressure and then push in to stop pump when pump is not in use or has adequate pressure. The switch is not closing the circuit. After releasing pressure it takes 10 sec to kick on, so a faulty switch too. The screw can't be turned any tighter for pump operation frequency without striping or falling into the housing. The whole power switch and housing for turning the pump on and off seem like complete plastic junk. ... show more
Reviewed in the United States on May 12, 2020 by James Wix

  • This pump is backed by a great manucaturer!
Size: 5.5 GPM Style: FNPT Ports
My previous review was not rosy because the new pump failed to start! Unfortunately Amazon return timeline expired already! Fortunately the manufacturer in Minnesota โ€œValley Industriesโ€ was incredibly kind. Thank you Mary! They sent me a new pump in 2 days because the pump was still under warranty. So have no fear the folks at Vally industries will be there for you. ... show more
Reviewed in the United States on May 5, 2025 by Hassan Sahouani

  • Lasted about 14 months
Size: 5.5 GPM Style: FNPT Ports
I used the pump about once a week for the last 14 months, spraying about 80 gallons of water each time. The pump is fairly quiet, easy to use, and provided great pressure for what I needed. Last week, the pressure switch broke which caused the pump to continuously run and a build up pressure in the line. Everflo sells replacement pump head kits for $60, and other companies sell replacement pressure switches, but we opted to purchase a brand new pump and keep the old one for spare parts. ... show more
Reviewed in the United States on May 9, 2022 by JORDAN S.

  • farm use
Size: 5.5 GPM Style: FNPT Ports
worked great
Reviewed in the United States on November 20, 2025 by MARK D SEMINEW

  • Dud
Size: 5.5 GPM Style: FNPT Ports
Well I usually order ahead of time to keep a spare in my truck. When I got it I found it to be pretty dirty but I didnโ€™t think much of it. I went to install it yesterday and it had a crack at the fitting connection and my heart sank because I realized I was passed the return window. Not sure why I was sent a dud but Iโ€™ll never order through this source again if this is the type of quality control they have. ... show more
Reviewed in the United States on February 8, 2021 by Rick C.

  • Damaged
Size: 5.5 GPM Style: FNPT Ports
Have used these pumps before and are a great product. This one however, arrived damaged as if someone had returned it after breaking it and then got shipped to me. Check your pump out when you get it.
Reviewed in the United States on July 4, 2025 by Benjamin Clayton

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