

💧 Power your off-grid lifestyle with quiet, reliable water pressure!
The SEAFLO 33-Series Water Pump and Accumulator Tank System is a robust 12V DC diaphragm pump delivering 3.0 GPM at 45 PSI, equipped with a 0.2-gallon accumulator tank to reduce cycling and extend pump life. Designed for marine, RV, and off-grid applications, it features corrosion-resistant EPDM valves and a Santoprene diaphragm for durability, ultra-quiet operation, and easy installation with versatile mounting options. Certified safe for potable water and backed by a 4-year warranty, it’s the go-to solution for steady, reliable water pressure in demanding environments.















| ASIN | B081544YH8 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #40,571 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #3 in Boat Water Pressure Pumps |
| Brand | SEAFLO |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (288) |
| Date First Available | February 19, 2017 |
| Global Trade Identification Number | 00810039490020 |
| Included Components | 51F09 Fitting |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 5.95 pounds |
| Item model number | SFWSK1-030-045-002 |
| Manufacturer | SEAFLO |
| Material | Polypropylene (PP) |
| Maximum Flow Rate | 3 Gallons Per Minute |
| Part Number | SFWSK1-030-045-002 |
| Power Source | 12V DC |
| Product Dimensions | 14.57"L x 10.24"W x 5.75"H |
| Size | 12V - 3.0 GPM |
| Style | Diaphragm Pump |
| UPC | 793945656622 810039490020 |
| Voltage | 11.99 Volts |
| Warranty Description | 4-Year Warranty |
J**R
Great flow and pressure, easy to set up
I've been using this pump for a week to irrigate my garden with reclaimed rainwater. It is easy to mount and connect because of the included hardware and mounting holes in the baseplate. It comes with everything you need to get started, is relatively quiet, includes a good warranty (that I haven't tested), and works well in my application. Great flowrate and pressure.
A**R
Awesome combo! So far so good!
So far so good! Replaced a shurflo pump that diaphragm replacement didn’t solve. This was easy to connect and saved me space. I like the filter and the little pressure tank. It’s super quiet compared to shurflo. Have only used it twice for about 5 minutes each and needed to buy a 3/4 to 1/2 hose adapter for my purposes. Highly recommend.
J**S
Great product
Works awesome in my tiny home. Shower pressure is perfect. Very energy efficient
R**N
10/10 best upgrade for an RV
**TLDR five stars and a super straightforward and worthwhile upgrade in the RV! ** Water flow is smooth and plentiful (like a house). The pump is so quiet I have to check if I actually turned it on! The flow rate seems to be really good, we have a standard low flow shower head in the RV and it acts just like the shower at the house. It’s on a rubber isolated backing plate and the pump and accumulator are also isolated from the backing plate via rubber feet. It’s got a neat set of power and ground leads in the top corner for quick access and connections. It does not show it in the pin it’s but comes with a strainer for the inlet side and two right angle hose adapters. It took me longer to get the access panel out of the way and find the correct bit to undo the RV screws then swapping out the pump. Would highly recommend this to anyone that’s tired of the shuttering water and loud noise a normal RV water pump is.
F**E
Super easy install. Quiet. Lower vibration than OEM RV pump
Overall I like this upgrade. The only issue I had with mine is that the pressure switch seemed to be set too high. When I first installed it, I switched it on started testing things. Everything was going good, so I left the pump on to see if I had any leaks for a while. I came back about an hour later and I couldn't touch the pump it was so hot. It also wouldn't run at that point when I turned on a faucet. It turned out that the pressure switch was set too high, and even 12 volts from the converter in my RV couldn't supply enough juice over 12a WG wire to satisfy that switch. Unfortunately I had already mounted and completely connected the pump, and I had situated it so that the pressure switch adjustment screw was facing a wall. After some adjustment, the unit works fine, and I found out that it wasn't running because of a thermal cut off. I just let it cool down and everything is good. The install was quick and easy. The pump on the board is much larger than just the pump that came in my rv, but I locked out that it fit perfectly on the floor inside the cabinet that the original pump was mounted in. Thanks to the additional connectors that were all included, I was able to shorten and properly connect the inlet and outlet without any modifications to the RV. I line the inside of the cabinet at this pump is mounted in with butyl rubber. Together with the rubber feet on the mounting platform, and the fact that it's just a quieter pump to begin with, the water pump has gone from something that will wake you up in the middle of the night to something that you strain to hear. Really nice upgrade
A**E
So quiet! I didn’t know what I was missing!!
Oh my god. I should have bought this for my camper 5 years ago. I cheated out in 2020 and bought a super cheap $20 water pump. It shook so loud and violently I was embarrassed at campsites to even turn it on. Finally got around to buying this pump and accumulator combo. Holy crap it’s silent!!!! About as close to silent as a pump could get. It’s mounted in the back of a campervan under the bed and when running the sink I cannot hear it. It’s wall mounted as well and doesn’t vibrate anything. The zero vibration is definitely due to the mounting plate. It has rubber shock absorbing feet attaching the pump and accumulator to the plate. And the plate has a second set of rubber shock absorbers on water you mount it to. 10/10 would recommend this as an upgrade if you want a quieter pump. Been running this for about 4 months so far and I love it.
K**Y
Replaced Joolca
For $100 either I buy this or a replacement OEM Joolca pump, I went this route instead to see what it will provide as an alternative or an upgrade. So far it has been an upgrade. I did have to make some modifications but I have run into the hardware store and buying some 1/2-inch to NPT adapters, because it only comes with one side while I needed two for the Joolca, input and output sides. After that was done it was flawlessly. I also love that it is going to provide pressure and that gives you the ability to use very little pressure in order to get some very nice sustained drizzle or water flow. That's much better than what came with the OEM. It's a really nice setup even though it does take up a bit more space. I've made room in my compartments for this because I like it that much.
B**N
Best off grid pump we have used
We live off grid, and have purchased other similar pumps, this one operates just like a city water system, its quit, uses about 140 watts of power but runs intermittently while the water runs steady. Can't see any detriment to our solar system. Works better than all the 12volt pumps we have tried.
K**E
What a great product had problems with my water now for 2 years noisy pump poor supply then I found this on here great piece of kit worked straight away and quiet I have tried loads of punmps but this is the best and it comes built up just connect neg and positive and water and that's it
B**.
Box was pretty beat up and didn’t try the item yet but seems fine .
B**B
Caused a water hammer issue on low pressure side 🥴 I fixed with an arrestor valve so all good
Trustpilot
5 days ago
2 months ago