






๐๐ฆ Power your journey with unstoppable flow and effortless control!
The WASSERMANN 12V RV Water Pressure Pump delivers a consistent 4.0 GPM flow at 45 PSI, powered by a versatile 12V DC motor compatible with batteries or cigarette lighter sockets. Featuring a fully automatic pressure switch, corrosion-resistant construction, and a self-priming design, it ensures reliable, hands-free water supply for RVs, campers, yachts, and more. The complete kit includes all necessary adapters and a debris filter for easy installation and maintenance.














| ASIN | B0BF9G3J86 |
| Best Sellers Rank | #567,334 in Automotive ( See Top 100 in Automotive ) #270 in RV Water Pumps & Accessories |
| Brand | wassermann |
| Brand Name | wassermann |
| Color | ['Gray'] |
| Customer Reviews | 4.0 out of 5 stars 182 Reviews |
| Flow Rate | 4 Gallons Per Minute |
| Included Components | 1* Filter Out Debris 2*Clamps, 1*1/2" Male Thread Hose Adptor, 1*Use Manual, 2*1/2" Barbed Hose Adaptors, rv pump |
| Item Dimensions L x W x H | 8.78"L x 5.12"W x 4.86"H |
| Item Type Name | Water preesure pump |
| Item Weight | 6.7 Pounds |
| Manufacturer | wassermann |
| Manufacturer Part Number | 3WDP4-45-115V |
| Material | Plastic |
| Material Type | Plastic |
| Maximum Lifting Height | 98 Feet |
| Model Number | RV water pump |
| Power Source | Corded Electric |
| Product Dimensions | 8.78"L x 5.12"W x 4.86"H |
| Product Style | 3WDP4-45-115 |
| Style | 3WDP4-45-115 |
| Unit Count | 1.0 Count |
| Voltage | 110 Volts |
B**D
So far so good, off-grid water application
So far this has performed well over the past few weeks of initial use. We have an off-grid property that has a well pump but no plumbing (well tank or pressure switch), so we didn't want to stress the well pump trying to use it on-demand for various uses. So, we put in a holding tank and connected everything with drinking water rated garden hose, and GHT - 1/2" NPT adapters. These adapters are widely available on Amazon (search GHT or garden hose thread to 1/2" NPT or pipe thread). The pump pulls water from the holding tank and goes past a small accumulator (This is recommended to smooth out the pressure spikes / drops in the lines as water is started/stopped frequently and slightly reduces charging cycles -search for seaflow brand), and goes out to another garden hose valve with various connections for various purposes (irrigation, outdoor shower, utility sink). I would much rather keep one of these on the shelf for 75 bucks in case it burns out than risk stressing a well pump 200' below the ground, that would be a substantial cost and effort to replace. Overall happy with the unit, some of the fittings that come with it seem a little flimsy, I used all brass fittings with Teflon tape and so far leak-free. I added an in-line 120V switch mounted next to it so I can easily turn it on and off.
S**N
Water pressure pump
Quick transaction. Great quality. Used this to winterize my RV. Worked great.
M**E
Leaked out of Every Seam After 1.5 Months
The unit worked great until AFTER the return window (a month and a half). It started leaking out of every seam, and water was coming out of where the electrical cord enters the unit. I used it attached to a garden hose to pump water up to a sprinkler on a hill. My husband took it apart and back together to see if it would not leak, but no it did not help. But....now it's broken and I had to buy a new one from Harbor Freight. UPDATE: The seller promptly offered to refund my order. Great customer service.
N**S
They donโt last very long.
I have bought five of these pumps and my first one has developed loud pumping noise and the pressure has been noticeably reduced (manual mentions bad bearings?). I have just bought a replacement, hoping to find a repair kit for this pump. Also, when I received the newly purchased replacement, the company changed the mounting pad hole placement, I had to switch mounting pads to match the drilled concrete holes. I do like the pumps, they work great overall, but realize I need to add a PVC cover to protect them from wind driven rain.
P**I
Durable
I used this for a swimming pool solar heater. It is a salt pool so I worried about corrosion. I also worried about durability since camper water is an intermittent application and mine needed to run all day every day. It made it through the summer with no problems. It has paid for itself. It did get too hot to touch. I cured that by winding the cold water tubing around the motor. That kept it cool and added several watts to the heating mission. I am in year 2. The pump was drained over the winter but was exposed to sub-zero temperature. To my surprise and delight, it is still working fine.
T**.
Great little pump for camper/temp water
I have bought multiple of these pumps to use for temporary water in job trailers. Pressure is great and ppm fill a toilet in about 3 minutes. The provided in line filter will save your valves and faucet diffusers as well. Can't say enough good about this product
S**R
Great pump
It does exactly what it says it will do. Increased my water pressure 10 fold. A very satisfied customer.
A**T
Horribly loud
It does work. we needed to boost the pressure for our short term rental. Until we could redo our pump system, this was supposed to help boost the shower pressure. Unfortunately it was so loud, the noise it makes every time the water runs sounds like someone banging on the walls. The video does not do it justice to just how loud it was while actually in the unit. Not sure if this was a defective pump or not, but there was no way we could have that kind of noise without complaints, so I immediately returned it. I specifically bought because others said it was quiet, that was definitely not the case. And it was not overloaded either, there was pressure already before the pump, just not as much as we liked. For $80 I expected more.
Trustpilot
1 month ago
1 month ago