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VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
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VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine
VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine

Features & Details

  • Say Goodbye to Low Water Pressure: Upgrade to our 3-chamber 12V water pump delivering a high flow rate of 3.5 GPM (13.25 L/min) at a steady 50 PSI. It's designed to meet all your daily water needs efficiently and reliably, saving you valuable time.
  • Automatic Pressure Switch: Customize your water pressure with an adjustable range from 40 to 100 PSI. The on-demand pressure switch automatically starts the pump when you open the faucet and stops it when you close it. Tested over 200,000 times for durability, it's built to last.
  • Ultra-Quiet Operation: Our 12V diaphragm pump features a pure copper motor for smooth and quiet performance. The plastic pump body and noise-reducing base effectively minimize sound, so it won't disrupt your work or sleep.
  • Security You Can Trust: Certified by CE and ROHS. This 12V water pump includes overheat and overload protection to extend its lifespan. Plus, it supports dry running and has a built-in check valve bypass switch to ensure uninterrupted water supply even if the pump or check valve fails.
  • Standard Size, Easy Replacement: Our 12V diaphragm pump is equipped with standard 1/2" MNPT inlet and outlet, replacing your existing pump is a breeze. Ideal for use in RVs, boats, campers, food trucks, and more, it brings convenience to your lifestyle.

Frequently Bought Together

Reviews 5.0
All reviews are from verified purchases
Average rating based on 26 reviews

Homesteadlife
Reviewed on Nov 04,2025
Was gonna replace my rv water pump which was sureflow and it's like $170 and then I ran across this it's like 1/3 the price and it's quite and has better pressure great deal for the money been running great for 2 months saved a bunch and am very happy with performance ran dry several times no issues awesome product for the money thanks vevor
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Todd Martens
Reviewed on Oct 17,2025
, works great
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Sum'in Dif'rent
Reviewed on Sep 19,2025
Product easy to install and works great!!
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GDF
Reviewed on Sep 11,2025
We use solar powered pumps for irrigation in the upper gardens and this unit fits our need perfectly. Well built, all connections and structures are well designed and fitted. The electrical pressure switch is solidly connected. Pump rate is as listed. These are generally not fast pumps but it does its 3 gpm and has reasonable pressure when needed. We use it to run drip irrigators so pressure isn't an issue but a thumb over the hose test shows some good pressure is available. Current draw seems average, we ran for 4 hours on a older 12v lead acid battery and didn't see a drop in run. Good choice, good price, I would purchase again!
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David Daniel
Reviewed on Sep 08,2025
Works great.
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Scott
Reviewed on Aug 24,2025
Had to change water pump in rv the price was good and it was fast and easy to install works great
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Lloyd G Breisch
Reviewed on Aug 15,2025
Great little pump for the price!
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Kye
Reviewed on Jul 24,2025
Works great and a third of the price anywhere else, easy to install, i used mine for my pull behind sprayer.
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Jeff Kellogg
Reviewed on Jul 21,2025
My new pump works extremely well! I use it to fill a bulk tank with water from a river . I put a 100 micron silt screen over the pickup and between that and the 50 micron filter screen , they catch all debris that may enter the system. I can easily remove the filter screen and return to pumping. It also has cut my fill time in half.
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Vanessa lowe
Reviewed on Jun 30,2025
Easy to install, love that it came with adapters for water connection.
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See all 26 reviews

About this item

Product specification
Item Model Number
NMDP33-G35-50-12
Voltage
DC 12V
Power
104W
Max Pressure
50 PSI
Max Flow Rate
3.5 GPM / 13.25 L/min
Inlet/Outlet Diameter
1/2'' MNPT (O.D. 20.955 mm)
Net Weight
4.28 lbs / 1.94 kg
Product Dimensions
8.15 x 5.43 x 4.92 in / 207 x 138 x 125 mm
Description
12V Potable Water Pump, 3.5 GPM High Flow Rate
This 12V diaphragm pump delivers an impressive 3.5 GPM (13.25 L/min) flow rate and a 50 PSI preset pressure, ensuring efficient and reliable water supply. It features 40 to 100 PSI adjustable pressure, a pure copper motor, and a standard 1/2" MNPT port. Elevate your water system today!
Customize your water pressure effortlessly with our 12V diaphragm pump. Just open the pressure switch with a screwdriver, find the center screw hole, and turn clockwise to increase pressure or counterclockwise to decrease it. Tailor your water usage to fit your needs and save water efficiently.
Our 12V water pump with pressure switch features a high-quality motor paired with a plastic pump body, effectively reducing noise. The anti-vibration base and cushion design further minimize sound, providing a quiet and efficient water pumping solution for a peaceful environment.
Both the inlet and outlet feature standard 1/2" MNPT interfaces, our 12 volt water pump with pressure switch ensuring compatibility with your existing pump. Replacement and installation are quick and hassle-free.
Our 12V RV water pump effortlessly meets all your water needs—from washing and showering to toilet and kitchen use. Enjoy your RV life to the fullest with a pump that supports you every step of the way.

High-Flow 3-Chamber 12V Diaphragm Pump for Efficient Water Supply

The VEVOR 12V diaphragm pump provides a steady and strong water flow whenever you need it. This pump has a high flow rate of 3.5 GPM (13.25 L/min) at 50 PSI, so you'll always have enough water pressure for your sinks, showers, or faucets. The three chambers keep the water moving continuously, so you won't have any problems even when multiple outlets are being used.


This pump makes sure that you get water quickly and reliably, whether you're in an RV, on a boat, running a food truck, or camping. You can fill tanks quickly and maintain steady pressure, making it easier and faster to meet your daily water needs. This pump is meant to help you save time and effort.


Automatic Pressure Switch with Adjustable 40-100 PSI Range

With the built-in automatic pressure switch on the VEVOR 12V diaphragm pump, your water system is easy to use and doesn't require additional effort. The pump starts automatically when you turn on the faucet and stops automatically when you turn off the faucet.


You can also adjust the pressure from 40 to 100 PSI to fit the needs of your system. This makes sure that the water flow is steady and dependable for showers, sinks, and other uses. You can trust that the pressure switch will work well and last for years because it has been tested more than 200,000 times.


Ultra-Quiet Operation with Noise-Reducing Base and Copper Motor

The VEVOR diaphragm pump is designed to run quietly, ensuring a smooth and calm water flow. The motor is made of pure copper, which makes it work well. The base and the plastic pump body are both strong and make less noise. There won't be any loud humming or vibrations, making it great for use in RVs, boats, campers, or inside.


The pump stays quiet even when it's working hard. You can use it while you sleep, cook, or work without being bothered. This makes sure that you get constant water pressure without any noise, enabling your daily water tasks to be easier and more comfortable.


CE & ROHS Certified with Overheat and Overload Protection

Your safety is the most important thing to the VEVOR 12V diaphragm pump. It has CE and ROHS certifications, which means it meets high safety standards for use. The pump has built-in protection against overheating and overloading, so neither the pump nor the devices you connect to it will be damaged.


The pump stops working on its own if the motor gets overheated or the electrical load gets too high. This gives you peace of mind and long-lasting performance. You can use the pump daily without worry because it is made to work safely and reliably in any water system.


Dry-Run Safe 12V Diaphragm Pump with Built-In Check Valve Bypass

The 12V diaphragm pump is designed to function effectively even when it's not in use. The pump is safe and works perfectly even when there is no water in it. This keeps the motor safe and extends the pump's lifespan.


It also has a built-in bypass switch for the check valve, which makes sure that water keeps flowing even if the pump or valve has a problem. This extra safety feature makes sure you always have water and gives you peace of mind, whether you're using it in an RV, boat, camper, or food truck.


Standard 1/2" MNPT Inlet and Outlet for Easy Replacement

The VEVOR diaphragm pump has standard 1/2" MNPT inlet and outlet connections, so it's easy to install and replace. You don't need any special adapters or custom fittings, which makes things easier and faster.


These standard connections make sure that everything fits perfectly, whether you're upgrading an old pump or setting up a new water system in your RV, boat, camper, or food truck. This design makes it easy to maintain and ensures your water system runs smoothly.


12V Diaphragm Pump Ideal for RVs, Boats, Campers, and Food Trucks

The diaphragm pump is made of durable material. It has been tested over 200,000 times, and its high-quality parts and strong three-chamber design make sure it will last for a long time. You can use it every day without worrying about it breaking or wearing out too soon.


This pump can handle heavy-duty work, whether you're using it inside an RV, boat, camper, or food truck. Its strong construction keeps water flowing smoothly, so you can relax knowing that you will always have access to water when you need it.


Durable Design Tested Over 200,000 Times for Longevity

The VEVOR diaphragm pump is designed to last for years without malfunctioning. It has a strong frame, a high-quality copper motor, and a strong pump body that can handle daily use without breaking down too quickly.


No matter where you put it, in your RV, boat, camper, or even a small food truck, the pump will always work. Over 200,000 tests have been done on this pump to show that it will last many years while performing efficiently. You don't have to worry about constantly fixing things or having them break down when you least expect them.


Product guides and documents
User manual-en (PDF) Review

Questions and Answers (2)

How long is warranty?
All products on our official website come with a 12-month warranty. If you purchase a product that has a problem within one year, we will be responsible for you.
By vevor
Helpful ( 0 )
Vevor Model - NMDP42-G30-55-12 What is the maximum amps this pump will draw? Thank you,
It is 7.5A.
By vevor
Helpful ( 0 )
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VEVOR 12V Diaphragm Pump, 3.5 GPM (13.25 L/min), 3-Chamber 12 Volt DC Water Pump with Automatic Pressure Switch 40-100 PSI Adjustable, 50 PSI, 1/2'' MNPT Port, for RV Yacht Food Truck Camper Marine

5 26 Reviews
$ 46 90
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