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YOUNGTREE Water Diaphragm Pump 12 Volt DC 3.5 GPM 45PSI, On Demand Self-priming Water Pump for RV Caranvan Marine Camper Sprayer

  • Based on 783 reviews
Condition: New
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026

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Availability: In Stock.
Fulfilled by Amazon

Arrives Nov 15 – Nov 16
Order within 4 hours and 6 minutes
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Size: T33-12V 3.5GPM 45PSI White


Features

  • Features: 12V DC water pump contains 3 chamber diaphragm pump 45 Psi with 3.5 gallons per minute water flow, 6.74 Max amps
  • On demand: Equipped with on demand pressure switch, pump automatically turns on/off as the faucet turned on/off. Pump shuts off pressure of 45PSI,adjustable pressure range of 40-80 PSI
  • Efficient and steady performance: Max water flow 3.5GPM, can support water of 3-4 faucets at the same time. Self-priming height up to 9.8 ft, maximum vertical height of 131 ft. Thermally protected and can run dry without damage. When the temperature reaches 70C/ 158F it will automatically close to protect motor, can support continuous work for 30-60 minutes
  • Widely used: Ideal for use in RV water systems, it can replace most RV pump brands. It is also the best partner of camper,trailer, off-grid cabin, yacht, house. This pump needs to be connected to 12V power supply, it does not have plug and is not suitable for 110V
  • After-sales Service: Always insist on providing after-sales service for users who purchase YOUNGTREE products. For any product related questions, you can get in touch with customer service through the order

Brand: YoungTree


Material: Stainless Steel


Style: Diaphragm


Product Dimensions: 8.86"L x 5.51"W x 5.12"H


Power Source: 12V DC


Item Weight: 4.8 Pounds


Maximum Flow Rate: 3.5 Gallons Per Minute


Maximum Lifting Height: 131 Feet


Voltage: 12 Volts (DC)


Manufacturer: YoungTree


Brand: ‎YoungTree


Material: ‎Stainless Steel


Style: ‎Diaphragm


Product Dimensions: ‎8.86"L x 5.51"W x 5.12"H


Power Source: ‎12V DC


Item Weight: ‎4.8 Pounds


Maximum Flow Rate: ‎3.5 Gallons Per Minute


Maximum Lifting Height: ‎131 Feet


Voltage: ‎12 Volts (DC)


Manufacturer: ‎YoungTree


Part Number: ‎T33-12V


Item Weight: ‎4.76 pounds


Item model number: ‎T33-12V


Size: ‎T33-12V 3.5GPM 45PSI White


Wattage: ‎55 watts


Item Package Quantity: ‎1


Special Features: ‎Pressure Switch


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: April 16, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 15 – Nov 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great little pump, lots of pressure.
Size: F42-110V 5.5GPM 70PSI
Pumping water from a 55 gallon barrel into a 4' garden hose, then to the pump, then 1 20' expandable hose. Works like a charm. Pressurizes the hose, keeps the pressure and enables me to spray a jet of warer about 60 feet. Highly impressed with the pressure and ease of cleaning the provided filter.
Reviewed in the United States on October 1, 2025 by Jeffrey D. Yadzinski

  • Great pump! A couple updates to get it dialed in.
Size: T42-12V-3.5GPM-55PSI
Hooked it to a cabin wall to run off a 12 volt battery charged by solar. Had to get it as the last one of a different brand died after six months. This one works so good and so quiet!! I’m impressed!! Update. After just a short time running it, it is intermittently running and no leaks anywhere. Annoying because this will just burn it up quick. This part is very unimpressive. Update. Just dialed the pressure switch down and it stopped it’s intermittent running. I’m still so impressed at how quiet this pump is! ... show more
Reviewed in the United States on July 11, 2025 by Casey Jones

  • Very, very pleased with this pump
Size: T33-110V-4.0GPM-50PSI
Awesome pump works very well. You went off of my solar system right out of the box. Didn’t need to adjust anything. The only thing I didn’t like is that the pex fitting adapter is made of plastic and snapped pretty easy however I wasn’t buying it for the fittings. I was buying the pump And the pump is awesome. ... show more
Reviewed in the United States on August 23, 2025 by Daniel Carreno

  • OVERALL A GOOD EXPERIENCE
Size: F42-110V 5.5GPM 70PSI
I can’t say my first pump was reliable, it broke down after a few hours, but maybe that one was just a bad one. I contacted the seller and they replaced it quickly and efficiently. Overall a good experience.
Reviewed in the United States on September 29, 2025 by En Vogue Photo Studio

  • Survived continuous operation for many hours as an emergency well pump.
Size: F42-110V-Brushless-6.0GPM-55PSI
I used this RV pump as an emergency well pump on shallow well (6' static) for weeks and it survived. Our 1 HP, 30 gpm well pump went out and I used this pump as an emergency pump for household water. It was able to maintain pressure in a large 120 gallon pressure tank between 40 and 55 psi delivering about 1 gpm at 55 psi. It survived many cycles charging the pressure tank. As an engineer, I view this as a difficult application because of the long cycles at higher pressures. It was able to suck up the water from approximately 8' without a problem, once a small air leak was found and corrected in the drop pipe. The high pressure shutoff did not work in my application, not sure why. The pump was a life saver and well worth considering if you have a well with water near the well head... ... show more
Reviewed in the United States on May 19, 2025 by Kent J.

  • Don’t buy it. SHORT lifespans - approx 30 min.
Size: T33-12V 3.5GPM 45PSI White
Used it once to winterize my rv. Come spring it didn’t work. Motor didn’t run. Since warranty was expired I took it apart and got the motor to run, meaning it was likely the pressure switch. Now have a useless motor but a non working pump In a hurry for a replacement I accidentally ordered the same unit. It’s going back as soon as it arrives. Found another brand that’s working fine. ... show more
Reviewed in the United States on August 27, 2025 by Ridgebackguy

  • Works good on water totes
Size: F42-110V 5.5GPM 70PSI
I usevit to pump water from storage totes. It puts out as much pressure and my hose at home. Just not as much volume. Runs quite and doesn't use alot of electricity. It will run until it builds pressure and shut off. Once you start using the water again it turns on.
Reviewed in the United States on July 6, 2025 by Project Ponderer

  • It can to me not damaged.
Size: T33-12V-3.5GPM-45PSI
I’m very pleased of the water pump works fantastic..
Reviewed in the United States on September 4, 2025 by Christopher Schneider

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